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type: MusicGroup
genre: grunge
popularity: 52
followers: 1036855
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x729c126b82d44a5c515729fd1da72efa6e0234c7c80a4124550dae960c185be6
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953408
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953408
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e42b7803-8ebd-4a7e-bd55-78ca8fabc718.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e42b7803-8ebd-4a7e-bd55-78ca8fabc718.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e42b7803-8ebd-4a7e-bd55-78ca8fabc718
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:28:13Z
additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729c126b82d44a5c515729fd1da72efa6e0234c7c80a4124550dae960c185be6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e42b7803-8ebd-4a7e-bd55-78ca8fabc718.json and https://artists.proofprofile.net/proofs/artist/e42b7803-8ebd-4a7e-bd55-78ca8fabc718.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
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album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
  track: The Yodel Song
    type: MusicRecording
    duration: PT3M36S
    duration ms: 216426
    explicit: false
    by artist: Kurt Cobain
    in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
      type: MusicAlbum
      date published: 2015-11-13
    isrc code: USUM71514590
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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    additional property: OTSBitcoinBlockVerifyURL
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    additional property: OTSRecordURL
      type: PropertyValue
      value: https://artists.proofprofile.net/proofs/track/2OTLhPcazsGflyvQ4gp4Jl.json
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2OTLhPcazsGflyvQ4gp4Jl
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T17:25:41Z
    additional property: OTSCanonicalRecord
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec50e5d9ef33e04f1144cd3bc6c4050359a877962b4f695e54d12d725418e3f4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2OTLhPcazsGflyvQ4gp4Jl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2OTLhPcazsGflyvQ4gp4Jl.
      date published: 2026-06-13T17:25:41Z
      text: {"copyright_id":"0xec50e5d9ef33e04f1144cd3bc6c4050359a877962b4f695e54d12d725418e3f4","isrc":"USUM71514590","name":"The Yodel Song","registered_at":"2026-06-07T02:07:15Z","spotify_id":"2OTLhPcazsGflyvQ4gp4Jl","type":"track"}
  track: Been A Son - Early Demo
    type: MusicRecording
    duration: PT1M20S
    duration ms: 80720
    explicit: false
    by artist: Kurt Cobain
    in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
      type: MusicAlbum
      date published: 2015-11-13
    isrc code: USUM71514591
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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    additional property: CopyrightRegisteredAt
      type: PropertyValue
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    additional property: CopyrightChainExplorerURL
      type: PropertyValue
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    additional property: OTSHash
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      type: PropertyValue
      value: https://blockstream.info/api/block/953536
    additional property: OTSRecordURL
      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7KPl2cnnSvoOuXugpNt9MO
    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac36612dc1bc5806e2efc2ca88b74f22320bcfa4270042efadfd0ea5df9b93d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7KPl2cnnSvoOuXugpNt9MO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7KPl2cnnSvoOuXugpNt9MO.
      date published: 2026-06-13T17:25:41Z
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  track: What More Can I Say
    type: MusicRecording
    duration: PT3M9S
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    in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
      type: MusicAlbum
      date published: 2015-11-13
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    additional property: CopyrightID
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      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
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    additional property: OTSRecordURL
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6sLCfP43HJKrnGi3FYVc0e
    additional property: OTSTimestamp
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    additional property: OTSCanonicalRecord
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e29bb0c8309207ae6ef51f83aca3240388073ec40b5c7aa7135e1c00da134f8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6sLCfP43HJKrnGi3FYVc0e.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6sLCfP43HJKrnGi3FYVc0e.
      date published: 2026-06-13T15:41:10Z
      text: {"copyright_id":"0x0e29bb0c8309207ae6ef51f83aca3240388073ec40b5c7aa7135e1c00da134f8","isrc":"USUM71514592","name":"What More Can I Say","registered_at":"2026-06-05T07:02:06Z","spotify_id":"6sLCfP43HJKrnGi3FYVc0e","type":"track"}
  track: 1988 Capitol Lake Jam Commercial
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    by artist: Kurt Cobain
    in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
      type: MusicAlbum
      date published: 2015-11-13
    isrc code: USUM71514593
    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: CopyrightRegisteredAt
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    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSRecordURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSCanonicalRecord
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
  track: The Happy Guitar
  track: Montage Of Kurt
  track: Beans
  track: Burn The Rain
  track: Clean Up Before She Comes - Early Demo
  track: Reverb Experiment
  track: Montage Of Kurt II
  track: Rehash
  track: You Can’t Change Me / Burn My Britches / Something In The Way - Early Demo
  track: Scoff - Early Demo
  track: Aberdeen
  track: Bright Smile
  track: Underground Celebritism
  track: Retreat
  track: Desire
  track: And I Love Her
  track: Sea Monkeys
  track: Sappy - Early Demo
  track: Letters To Frances
  track: Scream
  track: Frances Farmer Will Have Her Revenge On Seattle - Demo
  track: Kurt Ambiance
  track: She Only Lies
  track: Kurt Audio Collage
  track: Poison's Gone
  track: Rhesus Monkey
  track: Do Re Mi - Medley
album: Montage Of Heck: The Home Recordings
album: Smells Like Teen Spirit (From "Black Widow") [Piano Version]
album: About a Girl (Piano Version)
album: Something In The Way (From "The Batman") [Piano Version]
album: Something in the Way (Teaser Trailer From "The Batman") [Medieval Style]
album: The "Priest" They Called Him
track: Smells Like Teen Spirit (Arr. for Harp by Kristan Toczko)
track: The Yodel Song
track: Been A Son - Early Demo
track: What More Can I Say
track: 1988 Capitol Lake Jam Commercial
track: The Happy Guitar
track: Montage Of Kurt
track: Beans
track: Burn The Rain
track: Clean Up Before She Comes - Early Demo
track: Reverb Experiment
track: Montage Of Kurt II
track: Rehash
track: You Can’t Change Me / Burn My Britches / Something In The Way - Early Demo
track: Scoff - Early Demo
track: Aberdeen
track: Bright Smile
track: Underground Celebritism
track: Retreat
track: Desire

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0xa62c3c5899162198d39cd69fd13c72999c90550cc1882218964625a56de89486

OTSHash
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OTSBitcoinBlock
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value: 953528

OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block/953528

OTSRecordURL
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value: https://artists.proofprofile.net/proofs/track/1yvbdqpcBWl9yki9zETooD.json

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1yvbdqpcBWl9yki9zETooD

OTSTimestamp
type: PropertyValue
value: 2026-06-13T15:41:10Z

OTSCanonicalRecord
type: PropertyValue
value: {"copyright_id":"0xa62c3c5899162198d39cd69fd13c72999c90550cc1882218964625a56de89486","isrc":"USUM71514593","name":"1988 Capitol Lake Jam Commercial","registered_at":"2026-06-09T05:18:32Z","spotify_id":"1yvbdqpcBWl9yki9zETooD","type":"track"}

OTSVerifyInstructions
type: PropertyValue
value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62c3c5899162198d39cd69fd13c72999c90550cc1882218964625a56de89486. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1yvbdqpcBWl9yki9zETooD.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1yvbdqpcBWl9yki9zETooD.
date published: 2026-06-13T15:41:10Z
text: {"copyright_id":"0xa62c3c5899162198d39cd69fd13c72999c90550cc1882218964625a56de89486","isrc":"USUM71514593","name":"1988 Capitol Lake Jam Commercial","registered_at":"2026-06-09T05:18:32Z","spotify_id":"1yvbdqpcBWl9yki9zETooD","type":"track"}

The Happy Guitar
type: MusicRecording
duration: PT2M12S
duration ms: 132346
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514594
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/6wCOM2LSSXiGhrIwMPLKAz.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6wCOM2LSSXiGhrIwMPLKAz
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a47537ae8c5c394c7e16057c9cbc43b23b4b7619fd502e7a019b550adb6005. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6wCOM2LSSXiGhrIwMPLKAz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6wCOM2LSSXiGhrIwMPLKAz.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xf4a47537ae8c5c394c7e16057c9cbc43b23b4b7619fd502e7a019b550adb6005","isrc":"USUM71514594","name":"The Happy Guitar","registered_at":"2026-06-06T05:26:58Z","spotify_id":"6wCOM2LSSXiGhrIwMPLKAz","type":"track"}

Montage Of Kurt
type: MusicRecording
duration: PT2M11S
duration ms: 131906
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514595
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T13:24:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb769636eab2c016e13844b70249c69735d765d2dc3735d45b382b50967e8e85e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953520
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/7ct44bcXIGx2dgnLDPDrAE.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7ct44bcXIGx2dgnLDPDrAE
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-06-13T13:32:09Z
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Beans
type: MusicRecording
duration: PT1M21S
duration ms: 81826
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514596
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc93a44ec61fa88eed22817cccd0bfd564c6e3de337f69f4328a0a26a4a1ab1b1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953513
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/47omQ9pQxFfFgUPhziUdHp.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/47omQ9pQxFfFgUPhziUdHp
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93a44ec61fa88eed22817cccd0bfd564c6e3de337f69f4328a0a26a4a1ab1b1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/47omQ9pQxFfFgUPhziUdHp.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/47omQ9pQxFfFgUPhziUdHp.
  date published: 2026-06-13T12:47:07Z

Burn The Rain
type: MusicRecording
duration: PT1M16S
duration ms: 76453
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514597
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T10:40:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x24457de044b5292d37e23b60097351c47af8925c6908dabbbf202473468276c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953513
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5EndcDV7pcbLO4jE2GBZwC.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5EndcDV7pcbLO4jE2GBZwC
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x24457de044b5292d37e23b60097351c47af8925c6908dabbbf202473468276c2","isrc":"USUM71514597","name":"Burn The Rain","registered_at":"2026-06-04T10:40:20Z","spotify_id":"5EndcDV7pcbLO4jE2GBZwC","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24457de044b5292d37e23b60097351c47af8925c6908dabbbf202473468276c2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5EndcDV7pcbLO4jE2GBZwC.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5EndcDV7pcbLO4jE2GBZwC.
  date published: 2026-06-13T12:47:07Z
  text: {"copyright_id":"0x24457de044b5292d37e23b60097351c47af8925c6908dabbbf202473468276c2","isrc":"USUM71514597","name":"Burn The Rain","registered_at":"2026-06-04T10:40:20Z","spotify_id":"5EndcDV7pcbLO4jE2GBZwC","type":"track"}

Clean Up Before She Comes - Early Demo
type: MusicRecording
duration: PT2M34S
duration ms: 154600
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514598
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T08:26:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x937d2d8912f1694a8842a4947954d279c1882de621e420685b5efa308d86bf7f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/7huPE4UrKSu4q8GlokNZUA.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7huPE4UrKSu4q8GlokNZUA
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937d2d8912f1694a8842a4947954d279c1882de621e420685b5efa308d86bf7f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7huPE4UrKSu4q8GlokNZUA.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7huPE4UrKSu4q8GlokNZUA.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0x937d2d8912f1694a8842a4947954d279c1882de621e420685b5efa308d86bf7f","isrc":"USUM71514598","name":"Clean Up Before She Comes - Early Demo","registered_at":"2026-06-07T08:26:21Z","spotify_id":"7huPE4UrKSu4q8GlokNZUA","type":"track"}

Reverb Experiment
type: MusicRecording
duration: PT2M52S
duration ms: 172253
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514599
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-06-10T05:41:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8a95252280ee1f4ab43fc428dd6f1a59af40df32234dbf31ca281900fb8a6c43
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/08tCseii0ZYajWvOMhbpxk.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/08tCseii0ZYajWvOMhbpxk
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a95252280ee1f4ab43fc428dd6f1a59af40df32234dbf31ca281900fb8a6c43. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/08tCseii0ZYajWvOMhbpxk.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/08tCseii0ZYajWvOMhbpxk.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x8a95252280ee1f4ab43fc428dd6f1a59af40df32234dbf31ca281900fb8a6c43","isrc":"USUM71514599","name":"Reverb Experiment","registered_at":"2026-06-10T05:41:19Z","spotify_id":"08tCseii0ZYajWvOMhbpxk","type":"track"}

Montage Of Kurt II
type: MusicRecording
duration: PT1M8S
duration ms: 68920
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514600
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T19:32:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x69f7060da49030e693ee1a05d3a4ea0ed0ee23342ff2dd24505677fce26d9bb9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2kZ4qFcQ8pGKZsQypzRfSm.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2kZ4qFcQ8pGKZsQypzRfSm
additional property: OTSTimestamp
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  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f7060da49030e693ee1a05d3a4ea0ed0ee23342ff2dd24505677fce26d9bb9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2kZ4qFcQ8pGKZsQypzRfSm.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2kZ4qFcQ8pGKZsQypzRfSm.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x69f7060da49030e693ee1a05d3a4ea0ed0ee23342ff2dd24505677fce26d9bb9","isrc":"USUM71514600","name":"Montage Of Kurt II","registered_at":"2026-06-10T19:32:00Z","spotify_id":"2kZ4qFcQ8pGKZsQypzRfSm","type":"track"}

Rehash
type: MusicRecording
duration: PT2M35S
duration ms: 155160
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514601
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xcf3f13dfd76ae01e7037799fe0e6bcb876942ae0afbae0c0b48b687e332c1676
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/7r9Bmw21bdrQk2UFvo52cF.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7r9Bmw21bdrQk2UFvo52cF
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3f13dfd76ae01e7037799fe0e6bcb876942ae0afbae0c0b48b687e332c1676. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7r9Bmw21bdrQk2UFvo52cF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7r9Bmw21bdrQk2UFvo52cF.
  date published: 2026-06-13T15:41:10Z

You Can’t Change Me / Burn My Britches / Something In The Way - Early Demo
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duration: PT4M18S
duration ms: 258866
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
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  date published: 2015-11-13
isrc code: USUM71514602
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/3rcAn7pfzaCuSaJtKWL7hW.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3rcAn7pfzaCuSaJtKWL7hW
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9eb4b9b04202b4d37a2a6d7b142be46ccd464c028bb8e56cd52503e6a56c31. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3rcAn7pfzaCuSaJtKWL7hW.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3rcAn7pfzaCuSaJtKWL7hW.
  date published: 2026-06-13T17:25:41Z
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Scoff - Early Demo
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duration: PT0M37S
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by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf000c0e596ddcef8f90ffab4d0a792003618f189432341be9417ca1afe278536. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1zuzBcnPvxUCEdkY5XLgRI.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1zuzBcnPvxUCEdkY5XLgRI.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xf000c0e596ddcef8f90ffab4d0a792003618f189432341be9417ca1afe278536","isrc":"USUM71514603","name":"Scoff - Early Demo","registered_at":"2026-06-09T09:29:07Z","spotify_id":"1zuzBcnPvxUCEdkY5XLgRI","type":"track"}

Aberdeen
type: MusicRecording
duration: PT4M19S
duration ms: 259266
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514604
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T14:36:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x109f5a60b589d787cf59731534e3d1293aa33ac03b619535ac89115b19fe9660
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953515
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/7eVxrlrvBZwPbBRREtJJ6k.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7eVxrlrvBZwPbBRREtJJ6k
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109f5a60b589d787cf59731534e3d1293aa33ac03b619535ac89115b19fe9660. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7eVxrlrvBZwPbBRREtJJ6k.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7eVxrlrvBZwPbBRREtJJ6k.
  date published: 2026-06-13T12:53:06Z

Bright Smile
type: MusicRecording
duration: PT1M56S
duration ms: 116120
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514605
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T21:38:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbdfa433c4275d14f88df1099376521269ce913e5642b6f6d0c9632841cd138cb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/6AZvaPZXvFvgfBocCr0Lx4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6AZvaPZXvFvgfBocCr0Lx4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbdfa433c4275d14f88df1099376521269ce913e5642b6f6d0c9632841cd138cb","isrc":"USUM71514605","name":"Bright Smile","registered_at":"2026-06-08T21:38:49Z","spotify_id":"6AZvaPZXvFvgfBocCr0Lx4","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfa433c4275d14f88df1099376521269ce913e5642b6f6d0c9632841cd138cb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6AZvaPZXvFvgfBocCr0Lx4.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6AZvaPZXvFvgfBocCr0Lx4.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xbdfa433c4275d14f88df1099376521269ce913e5642b6f6d0c9632841cd138cb","isrc":"USUM71514605","name":"Bright Smile","registered_at":"2026-06-08T21:38:49Z","spotify_id":"6AZvaPZXvFvgfBocCr0Lx4","type":"track"}

Underground Celebritism
type: MusicRecording
duration: PT0M28S
duration ms: 28640
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514606

Retreat
type: MusicRecording
duration: PT2M12S
duration ms: 132893
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514607
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T09:33:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c4e3e5e319d43790236e2530293ba2ff0380a531084b77bed1c0f3f95f8989d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5Gt6JugZBdZxkZ1q9RmGES.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5Gt6JugZBdZxkZ1q9RmGES
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4e3e5e319d43790236e2530293ba2ff0380a531084b77bed1c0f3f95f8989d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5Gt6JugZBdZxkZ1q9RmGES.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5Gt6JugZBdZxkZ1q9RmGES.
  date published: 2026-06-13T15:41:10Z

Desire
type: MusicRecording
duration: PT2M27S
duration ms: 147066
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514608
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T14:36:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe933fbddcc80daddf97d7273ce8051606c075674a35c09cfc1b611a4f28e96ad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953515
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/4SSmjYNSIjLD9GY0KCMmQm.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4SSmjYNSIjLD9GY0KCMmQm
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe933fbddcc80daddf97d7273ce8051606c075674a35c09cfc1b611a4f28e96ad. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4SSmjYNSIjLD9GY0KCMmQm.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4SSmjYNSIjLD9GY0KCMmQm.
  date published: 2026-06-13T12:53:06Z

And I Love Her
type: MusicRecording
duration: PT2M4S
duration ms: 124920
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514609
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-02T13:21:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce8125e27c8b5549dbd3a82a3bc541017faa77c3175ca40937a7b8b63ec2f783
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5cH8EVxJ8skgWRDXo3G5Cv.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5cH8EVxJ8skgWRDXo3G5Cv
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xce8125e27c8b5549dbd3a82a3bc541017faa77c3175ca40937a7b8b63ec2f783","isrc":"USUM71514609","name":"And I Love Her","registered_at":"2026-06-02T13:21:22Z","spotify_id":"5cH8EVxJ8skgWRDXo3G5Cv","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8125e27c8b5549dbd3a82a3bc541017faa77c3175ca40937a7b8b63ec2f783. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5cH8EVxJ8skgWRDXo3G5Cv.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5cH8EVxJ8skgWRDXo3G5Cv.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xce8125e27c8b5549dbd3a82a3bc541017faa77c3175ca40937a7b8b63ec2f783","isrc":"USUM71514609","name":"And I Love Her","registered_at":"2026-06-02T13:21:22Z","spotify_id":"5cH8EVxJ8skgWRDXo3G5Cv","type":"track"}

Sea Monkeys
type: MusicRecording
duration: PT0M54S
duration ms: 54813
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514611
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T14:55:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaf1afae1224c2b7a22e765fef497d21d8953d72fd1fc10f4ac0013935c7a5202
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/3p87KVlNx6I4RhYy2x2XBv.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3p87KVlNx6I4RhYy2x2XBv
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaf1afae1224c2b7a22e765fef497d21d8953d72fd1fc10f4ac0013935c7a5202","isrc":"USUM71514611","name":"Sea Monkeys","registered_at":"2026-06-09T14:55:33Z","spotify_id":"3p87KVlNx6I4RhYy2x2XBv","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1afae1224c2b7a22e765fef497d21d8953d72fd1fc10f4ac0013935c7a5202. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3p87KVlNx6I4RhYy2x2XBv.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3p87KVlNx6I4RhYy2x2XBv.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0xaf1afae1224c2b7a22e765fef497d21d8953d72fd1fc10f4ac0013935c7a5202","isrc":"USUM71514611","name":"Sea Monkeys","registered_at":"2026-06-09T14:55:33Z","spotify_id":"3p87KVlNx6I4RhYy2x2XBv","type":"track"}

Sappy - Early Demo
type: MusicRecording
duration: PT2M30S
duration ms: 150386
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514612
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T09:52:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x03624bc73774ee20223beae1d5c399bc7b3f199681a354621252f898fd64664b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/3AxbscBOskXKgfelZsuo4r.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3AxbscBOskXKgfelZsuo4r
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x03624bc73774ee20223beae1d5c399bc7b3f199681a354621252f898fd64664b","isrc":"USUM71514612","name":"Sappy - Early Demo","registered_at":"2026-06-04T09:52:45Z","spotify_id":"3AxbscBOskXKgfelZsuo4r","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03624bc73774ee20223beae1d5c399bc7b3f199681a354621252f898fd64664b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3AxbscBOskXKgfelZsuo4r.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3AxbscBOskXKgfelZsuo4r.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x03624bc73774ee20223beae1d5c399bc7b3f199681a354621252f898fd64664b","isrc":"USUM71514612","name":"Sappy - Early Demo","registered_at":"2026-06-04T09:52:45Z","spotify_id":"3AxbscBOskXKgfelZsuo4r","type":"track"}

Letters To Frances
type: MusicRecording
duration: PT2M4S
duration ms: 124506
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514613
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T22:03:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x666e09f9b45ddc6742e666c00d0ef0da48a8a17b2146d5cdf84c2965aea6c424
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2NGUHMpXX5dewkZiDZvtJc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2NGUHMpXX5dewkZiDZvtJc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x666e09f9b45ddc6742e666c00d0ef0da48a8a17b2146d5cdf84c2965aea6c424","isrc":"USUM71514613","name":"Letters To Frances","registered_at":"2026-06-05T22:03:41Z","spotify_id":"2NGUHMpXX5dewkZiDZvtJc","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666e09f9b45ddc6742e666c00d0ef0da48a8a17b2146d5cdf84c2965aea6c424. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2NGUHMpXX5dewkZiDZvtJc.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2NGUHMpXX5dewkZiDZvtJc.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x666e09f9b45ddc6742e666c00d0ef0da48a8a17b2146d5cdf84c2965aea6c424","isrc":"USUM71514613","name":"Letters To Frances","registered_at":"2026-06-05T22:03:41Z","spotify_id":"2NGUHMpXX5dewkZiDZvtJc","type":"track"}

Scream
type: MusicRecording
duration: PT0M32S
duration ms: 32159
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514614
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T13:32:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb94ee9e9e3f7c82cbdc25fbc31b500366d24ef53c7775c6bdd64e508260d685b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953520
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5ki5wskkI5sdmkJ43WXaa2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5ki5wskkI5sdmkJ43WXaa2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94ee9e9e3f7c82cbdc25fbc31b500366d24ef53c7775c6bdd64e508260d685b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5ki5wskkI5sdmkJ43WXaa2.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5ki5wskkI5sdmkJ43WXaa2.
  date published: 2026-06-13T13:32:09Z

Frances Farmer Will Have Her Revenge On Seattle - Demo
type: MusicRecording
duration: PT4M23S
duration ms: 263466
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514615
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T02:02:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x21a33f635ee95d44296ac900b227f6590cfe9be55a8202fc202cf07370e91033
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/65mR2xtJTa1iLN6eVyHIuz.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/65mR2xtJTa1iLN6eVyHIuz
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x21a33f635ee95d44296ac900b227f6590cfe9be55a8202fc202cf07370e91033","isrc":"USUM71514615","name":"Frances Farmer Will Have Her Revenge On Seattle - Demo","registered_at":"2026-06-07T02:02:01Z","spotify_id":"65mR2xtJTa1iLN6eVyHIuz","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a33f635ee95d44296ac900b227f6590cfe9be55a8202fc202cf07370e91033. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/65mR2xtJTa1iLN6eVyHIuz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/65mR2xtJTa1iLN6eVyHIuz.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x21a33f635ee95d44296ac900b227f6590cfe9be55a8202fc202cf07370e91033","isrc":"USUM71514615","name":"Frances Farmer Will Have Her Revenge On Seattle - Demo","registered_at":"2026-06-07T02:02:01Z","spotify_id":"65mR2xtJTa1iLN6eVyHIuz","type":"track"}

Kurt Ambiance
type: MusicRecording
duration: PT0M25S
duration ms: 25600
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13

She Only Lies
type: MusicRecording
duration: PT2M47S
duration ms: 167186
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514617
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T13:36:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa891731abaf7401dd6510ecc5f6b33b302e387cbba71f3b2d880c3522737ed3a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/0UyEX00PgplVsCcqtl1Rna.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0UyEX00PgplVsCcqtl1Rna
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa891731abaf7401dd6510ecc5f6b33b302e387cbba71f3b2d880c3522737ed3a","isrc":"USUM71514617","name":"She Only Lies","registered_at":"2026-06-04T13:36:31Z","spotify_id":"0UyEX00PgplVsCcqtl1Rna","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa891731abaf7401dd6510ecc5f6b33b302e387cbba71f3b2d880c3522737ed3a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0UyEX00PgplVsCcqtl1Rna.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0UyEX00PgplVsCcqtl1Rna.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xa891731abaf7401dd6510ecc5f6b33b302e387cbba71f3b2d880c3522737ed3a","isrc":"USUM71514617","name":"She Only Lies","registered_at":"2026-06-04T13:36:31Z","spotify_id":"0UyEX00PgplVsCcqtl1Rna","type":"track"}

Kurt Audio Collage
type: MusicRecording
duration: PT0M24S
duration ms: 24786
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13

Poison's Gone
type: MusicRecording
duration: PT2M11S
duration ms: 131800
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514619
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T09:15:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe645ea250af201d89f651d5617bf4689f9e342b0ef89963c5202713f4be78b36
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/4jK6bBO2JbkvvgT7FPj8c5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4jK6bBO2JbkvvgT7FPj8c5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe645ea250af201d89f651d5617bf4689f9e342b0ef89963c5202713f4be78b36","isrc":"USUM71514619","name":"Poison's Gone","registered_at":"2026-06-04T09:15:42Z","spotify_id":"4jK6bBO2JbkvvgT7FPj8c5","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe645ea250af201d89f651d5617bf4689f9e342b0ef89963c5202713f4be78b36. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4jK6bBO2JbkvvgT7FPj8c5.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4jK6bBO2JbkvvgT7FPj8c5.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0xe645ea250af201d89f651d5617bf4689f9e342b0ef89963c5202713f4be78b36","isrc":"USUM71514619","name":"Poison's Gone","registered_at":"2026-06-04T09:15:42Z","spotify_id":"4jK6bBO2JbkvvgT7FPj8c5","type":"track"}

Rhesus Monkey
type: MusicRecording
duration: PT0M43S
duration ms: 43693
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514620
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T05:39:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbae1b52bc6dc130d5760ed09af8ed4f78b5d429c1d8c5f31d83c101d727be6a0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/28i6epjueIE4DjxCLOlIjU.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/28i6epjueIE4DjxCLOlIjU
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbae1b52bc6dc130d5760ed09af8ed4f78b5d429c1d8c5f31d83c101d727be6a0","isrc":"USUM71514620","name":"Rhesus Monkey","registered_at":"2026-06-10T05:39:45Z","spotify_id":"28i6epjueIE4DjxCLOlIjU","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae1b52bc6dc130d5760ed09af8ed4f78b5d429c1d8c5f31d83c101d727be6a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/28i6epjueIE4DjxCLOlIjU.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/28i6epjueIE4DjxCLOlIjU.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0xbae1b52bc6dc130d5760ed09af8ed4f78b5d429c1d8c5f31d83c101d727be6a0","isrc":"USUM71514620","name":"Rhesus Monkey","registered_at":"2026-06-10T05:39:45Z","spotify_id":"28i6epjueIE4DjxCLOlIjU","type":"track"}

Do Re Mi - Medley
type: MusicRecording
duration: PT10M10S
duration ms: 610920
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514621
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T08:29:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xba794406787c6d5f5b8f5bd7a84e75a9c5d9e914eb20ae14bf4cf466507100ea
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953515
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/4AGgeyEaE3TLimaKiyHWhl.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4AGgeyEaE3TLimaKiyHWhl
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xba794406787c6d5f5b8f5bd7a84e75a9c5d9e914eb20ae14bf4cf466507100ea","isrc":"USUM71514621","name":"Do Re Mi - Medley","registered_at":"2026-06-07T08:29:37Z","spotify_id":"4AGgeyEaE3TLimaKiyHWhl","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba794406787c6d5f5b8f5bd7a84e75a9c5d9e914eb20ae14bf4cf466507100ea. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4AGgeyEaE3TLimaKiyHWhl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4AGgeyEaE3TLimaKiyHWhl.
  date published: 2026-06-13T12:53:06Z
  text: {"copyright_id":"0xba794406787c6d5f5b8f5bd7a84e75a9c5d9e914eb20ae14bf4cf466507100ea","isrc":"USUM71514621","name":"Do Re Mi - Medley","registered_at":"2026-06-07T08:29:37Z","spotify_id":"4AGgeyEaE3TLimaKiyHWhl","type":"track"}

Montage Of Heck: The Home Recordings
type: MusicAlbum
date published: 2015-11-13
track: The Yodel Song
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  duration: PT3M35S
  duration ms: 215786
  explicit: false
  by artist: Kurt Cobain
  in album: Montage Of Heck: The Home Recordings
    type: MusicAlbum
    date published: 2015-11-13
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-08T13:33:13+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x46734b3065d7d73baa98726a8ba41a7c39d7ba96bbe5cab347aa6721105fede9
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953520
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953520
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/0v0JYXuDBxTWLhwIXHlTdU.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0v0JYXuDBxTWLhwIXHlTdU
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x46734b3065d7d73baa98726a8ba41a7c39d7ba96bbe5cab347aa6721105fede9","isrc":"USUM71515157","name":"The Yodel Song","registered_at":"2026-06-08T13:33:13Z","spotify_id":"0v0JYXuDBxTWLhwIXHlTdU","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46734b3065d7d73baa98726a8ba41a7c39d7ba96bbe5cab347aa6721105fede9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0v0JYXuDBxTWLhwIXHlTdU.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0v0JYXuDBxTWLhwIXHlTdU.
    date published: 2026-06-13T13:32:09Z
    text: {"copyright_id":"0x46734b3065d7d73baa98726a8ba41a7c39d7ba96bbe5cab347aa6721105fede9","isrc":"USUM71515157","name":"The Yodel Song","registered_at":"2026-06-08T13:33:13Z","spotify_id":"0v0JYXuDBxTWLhwIXHlTdU","type":"track"}
track: Been A Son - Early Demo
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  by artist: Kurt Cobain
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    type: MusicAlbum
    date published: 2015-11-13
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-05T21:59:33+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0xac36612dc1bc5806e2efc2ca88b74f22320bcfa4270042efadfd0ea5df9b93d1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953528
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953528
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/6vLfoPmygmHvyzw1yzDKOB.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6vLfoPmygmHvyzw1yzDKOB
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T15:41:10Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0xac36612dc1bc5806e2efc2ca88b74f22320bcfa4270042efadfd0ea5df9b93d1","isrc":"USUM71514591","name":"Been A Son - Early Demo","registered_at":"2026-06-05T21:59:33Z","spotify_id":"6vLfoPmygmHvyzw1yzDKOB","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac36612dc1bc5806e2efc2ca88b74f22320bcfa4270042efadfd0ea5df9b93d1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6vLfoPmygmHvyzw1yzDKOB.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6vLfoPmygmHvyzw1yzDKOB.
    date published: 2026-06-13T15:41:10Z
    text: {"copyright_id":"0xac36612dc1bc5806e2efc2ca88b74f22320bcfa4270042efadfd0ea5df9b93d1","isrc":"USUM71514591","name":"Been A Son - Early Demo","registered_at":"2026-06-05T21:59:33Z","spotify_id":"6vLfoPmygmHvyzw1yzDKOB","type":"track"}
track: The Happy Guitar
  type: MusicRecording
  duration: PT2M12S
  duration ms: 132346
  explicit: false
  by artist: Kurt Cobain
  in album: Montage Of Heck: The Home Recordings
    type: MusicAlbum
    date published: 2015-11-13
  isrc code: USUM71514594
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-06T05:26:58+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf4a47537ae8c5c394c7e16057c9cbc43b23b4b7619fd502e7a019b550adb6005
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953520
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953520
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/00TlOP4gqECTxfLpzxGHom.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/00TlOP4gqECTxfLpzxGHom
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0xf4a47537ae8c5c394c7e16057c9cbc43b23b4b7619fd502e7a019b550adb6005","isrc":"USUM71514594","name":"The Happy Guitar","registered_at":"2026-06-06T05:26:58Z","spotify_id":"00TlOP4gqECTxfLpzxGHom","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a47537ae8c5c394c7e16057c9cbc43b23b4b7619fd502e7a019b550adb6005. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/00TlOP4gqECTxfLpzxGHom.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/00TlOP4gqECTxfLpzxGHom.
    date published: 2026-06-13T13:32:09Z
    text: {"copyright_id":"0xf4a47537ae8c5c394c7e16057c9cbc43b23b4b7619fd502e7a019b550adb6005","isrc":"USUM71514594","name":"The Happy Guitar","registered_at":"2026-06-06T05:26:58Z","spotify_id":"00TlOP4gqECTxfLpzxGHom","type":"track"}
track: Clean Up Before She Comes - Early Demo
  type: MusicRecording
  duration: PT2M34S
  duration ms: 154600
  explicit: false
  by artist: Kurt Cobain
  in album: Montage Of Heck: The Home Recordings
    type: MusicAlbum
    date published: 2015-11-13
  isrc code: USUM71514598
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-07T08:26:21+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x937d2d8912f1694a8842a4947954d279c1882de621e420685b5efa308d86bf7f
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953528
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953528
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/3BYiIUJRlzJ5CMPGm0LnkH.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3BYiIUJRlzJ5CMPGm0LnkH
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T15:41:10Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x937d2d8912f1694a8842a4947954d279c1882de621e420685b5efa308d86bf7f","isrc":"USUM71514598","name":"Clean Up Before She Comes - Early Demo","registered_at":"2026-06-07T08:26:21Z","spotify_id":"3BYiIUJRlzJ5CMPGm0LnkH","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937d2d8912f1694a8842a4947954d279c1882de621e420685b5efa308d86bf7f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3BYiIUJRlzJ5CMPGm0LnkH.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3BYiIUJRlzJ5CMPGm0LnkH.
    date published: 2026-06-13T15:41:10Z
    text: {"copyright_id":"0x937d2d8912f1694a8842a4947954d279c1882de621e420685b5efa308d86bf7f","isrc":"USUM71514598","name":"Clean Up Before She Comes - Early Demo","registered_at":"2026-06-07T08:26:21Z","spotify_id":"3BYiIUJRlzJ5CMPGm0LnkH","type":"track"}
track: Reverb Experiment
  type: MusicRecording
  duration: PT2M52S
  duration ms: 172266
  explicit: false
  by artist: Kurt Cobain
  in album: Montage Of Heck: The Home Recordings
    type: MusicAlbum
    date published: 2015-11-13
  isrc code: USUM71514599
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSRecordURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSCanonicalRecord
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
track: You Can’t Change Me / Burn My Britches / Something In The Way - Early Demo
track: Scoff - Early Demo
track: Desire
track: And I Love Her
track: Sappy - Early Demo
track: Letters To Frances
track: Frances Farmer Will Have Her Revenge On Seattle - Demo
track: She Only Lies

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-06-10T05:41:19+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x8a95252280ee1f4ab43fc428dd6f1a59af40df32234dbf31ca281900fb8a6c43

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 953528

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block/953528

OTSRecordURL
type: PropertyValue
value: https://artists.proofprofile.net/proofs/track/2OLqGcLZcpP42aCoMyU1ai.json

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2OLqGcLZcpP42aCoMyU1ai

OTSTimestamp
type: PropertyValue
value: 2026-06-13T15:41:10Z

OTSCanonicalRecord
type: PropertyValue
value: {"copyright_id":"0x8a95252280ee1f4ab43fc428dd6f1a59af40df32234dbf31ca281900fb8a6c43","isrc":"USUM71514599","name":"Reverb Experiment","registered_at":"2026-06-10T05:41:19Z","spotify_id":"2OLqGcLZcpP42aCoMyU1ai","type":"track"}

OTSVerifyInstructions
type: PropertyValue
value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a95252280ee1f4ab43fc428dd6f1a59af40df32234dbf31ca281900fb8a6c43. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2OLqGcLZcpP42aCoMyU1ai.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2OLqGcLZcpP42aCoMyU1ai.
date published: 2026-06-13T15:41:10Z
text: {"copyright_id":"0x8a95252280ee1f4ab43fc428dd6f1a59af40df32234dbf31ca281900fb8a6c43","isrc":"USUM71514599","name":"Reverb Experiment","registered_at":"2026-06-10T05:41:19Z","spotify_id":"2OLqGcLZcpP42aCoMyU1ai","type":"track"}

You Can’t Change Me / Burn My Britches / Something In The Way - Early Demo
type: MusicRecording
duration: PT4M18S
duration ms: 258853
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514602
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T21:41:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6b9eb4b9b04202b4d37a2a6d7b142be46ccd464c028bb8e56cd52503e6a56c31
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/09tV8RmILpwGx2shRWTAin.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/09tV8RmILpwGx2shRWTAin
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6b9eb4b9b04202b4d37a2a6d7b142be46ccd464c028bb8e56cd52503e6a56c31","isrc":"USUM71514602","name":"You Can’t Change Me / Burn My Britches / Something In The Way - Early Demo","registered_at":"2026-06-08T21:41:30Z","spotify_id":"09tV8RmILpwGx2shRWTAin","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9eb4b9b04202b4d37a2a6d7b142be46ccd464c028bb8e56cd52503e6a56c31. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/09tV8RmILpwGx2shRWTAin.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/09tV8RmILpwGx2shRWTAin.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x6b9eb4b9b04202b4d37a2a6d7b142be46ccd464c028bb8e56cd52503e6a56c31","isrc":"USUM71514602","name":"You Can’t Change Me / Burn My Britches / Something In The Way - Early Demo","registered_at":"2026-06-08T21:41:30Z","spotify_id":"09tV8RmILpwGx2shRWTAin","type":"track"}

Scoff - Early Demo
type: MusicRecording
duration: PT0M37S
duration ms: 37333
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514603
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T09:29:07+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf000c0e596ddcef8f90ffab4d0a792003618f189432341be9417ca1afe278536
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956302
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/0uZkpvffCgYBMipHCCPKFG.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0uZkpvffCgYBMipHCCPKFG
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf000c0e596ddcef8f90ffab4d0a792003618f189432341be9417ca1afe278536","isrc":"USUM71514603","name":"Scoff - Early Demo","registered_at":"2026-06-09T09:29:07Z","spotify_id":"0uZkpvffCgYBMipHCCPKFG","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf000c0e596ddcef8f90ffab4d0a792003618f189432341be9417ca1afe278536. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0uZkpvffCgYBMipHCCPKFG.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0uZkpvffCgYBMipHCCPKFG.
  date published: 2026-07-02T03:30:09Z
  text: {"copyright_id":"0xf000c0e596ddcef8f90ffab4d0a792003618f189432341be9417ca1afe278536","isrc":"USUM71514603","name":"Scoff - Early Demo","registered_at":"2026-06-09T09:29:07Z","spotify_id":"0uZkpvffCgYBMipHCCPKFG","type":"track"}

Desire
type: MusicRecording
duration: PT2M27S
duration ms: 147066
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514608
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T14:36:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe933fbddcc80daddf97d7273ce8051606c075674a35c09cfc1b611a4f28e96ad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5STPBTyx45WNVD0CVGjjRX.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5STPBTyx45WNVD0CVGjjRX
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe933fbddcc80daddf97d7273ce8051606c075674a35c09cfc1b611a4f28e96ad. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5STPBTyx45WNVD0CVGjjRX.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5STPBTyx45WNVD0CVGjjRX.
  date published: 2026-06-13T15:41:10Z

And I Love Her
type: MusicRecording
duration: PT2M4S
duration ms: 124933
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514609
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-01T12:44:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xce8125e27c8b5549dbd3a82a3bc541017faa77c3175ca40937a7b8b63ec2f783
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953513
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/7x4b0UccXSKBWxWmjcrG2T.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7x4b0UccXSKBWxWmjcrG2T
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xce8125e27c8b5549dbd3a82a3bc541017faa77c3175ca40937a7b8b63ec2f783","isrc":"USUM71514609","name":"And I Love Her","registered_at":"2026-06-01T12:44:29Z","spotify_id":"7x4b0UccXSKBWxWmjcrG2T","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
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  date published: 2026-06-13T12:47:07Z
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Sappy - Early Demo
type: MusicRecording
duration: PT2M28S
duration ms: 148573
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514612
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x03624bc73774ee20223beae1d5c399bc7b3f199681a354621252f898fd64664b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/4le6DvrwMv2rpyN1SPeL0g.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4le6DvrwMv2rpyN1SPeL0g
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03624bc73774ee20223beae1d5c399bc7b3f199681a354621252f898fd64664b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4le6DvrwMv2rpyN1SPeL0g.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4le6DvrwMv2rpyN1SPeL0g.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x03624bc73774ee20223beae1d5c399bc7b3f199681a354621252f898fd64664b","isrc":"USUM71514612","name":"Sappy - Early Demo","registered_at":"2026-06-04T09:52:45Z","spotify_id":"4le6DvrwMv2rpyN1SPeL0g","type":"track"}

Letters To Frances
type: MusicRecording
duration: PT2M4S
duration ms: 124506
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514613
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/6GxkhPHOON85bGKOSBrUxb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6GxkhPHOON85bGKOSBrUxb
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666e09f9b45ddc6742e666c00d0ef0da48a8a17b2146d5cdf84c2965aea6c424. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6GxkhPHOON85bGKOSBrUxb.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6GxkhPHOON85bGKOSBrUxb.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0x666e09f9b45ddc6742e666c00d0ef0da48a8a17b2146d5cdf84c2965aea6c424","isrc":"USUM71514613","name":"Letters To Frances","registered_at":"2026-06-05T22:03:41Z","spotify_id":"6GxkhPHOON85bGKOSBrUxb","type":"track"}

Frances Farmer Will Have Her Revenge On Seattle - Demo
type: MusicRecording
duration: PT4M23S
duration ms: 263800
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514615
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T02:02:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x21a33f635ee95d44296ac900b227f6590cfe9be55a8202fc202cf07370e91033
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953520
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/0qzNfgVmn4Ou0z9PBorOYO.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0qzNfgVmn4Ou0z9PBorOYO
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a33f635ee95d44296ac900b227f6590cfe9be55a8202fc202cf07370e91033. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0qzNfgVmn4Ou0z9PBorOYO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0qzNfgVmn4Ou0z9PBorOYO.
  date published: 2026-06-13T13:32:09Z
  text: {"copyright_id":"0x21a33f635ee95d44296ac900b227f6590cfe9be55a8202fc202cf07370e91033","isrc":"USUM71514615","name":"Frances Farmer Will Have Her Revenge On Seattle - Demo","registered_at":"2026-06-07T02:02:01Z","spotify_id":"0qzNfgVmn4Ou0z9PBorOYO","type":"track"}

She Only Lies
type: MusicRecording
duration: PT2M47S
duration ms: 167213
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514617
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T13:36:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa891731abaf7401dd6510ecc5f6b33b302e387cbba71f3b2d880c3522737ed3a
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2bfLrLQJ2jeclZ6BLECoBG.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2bfLrLQJ2jeclZ6BLECoBG
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa891731abaf7401dd6510ecc5f6b33b302e387cbba71f3b2d880c3522737ed3a","isrc":"USUM71514617","name":"She Only Lies","registered_at":"2026-06-04T13:36:31Z","spotify_id":"2bfLrLQJ2jeclZ6BLECoBG","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa891731abaf7401dd6510ecc5f6b33b302e387cbba71f3b2d880c3522737ed3a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2bfLrLQJ2jeclZ6BLECoBG.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2bfLrLQJ2jeclZ6BLECoBG.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xa891731abaf7401dd6510ecc5f6b33b302e387cbba71f3b2d880c3522737ed3a","isrc":"USUM71514617","name":"She Only Lies","registered_at":"2026-06-04T13:36:31Z","spotify_id":"2bfLrLQJ2jeclZ6BLECoBG","type":"track"}

Smells Like Teen Spirit (From "Black Widow") [Piano Version]
type: MusicAlbum
date published: 2023-03-31
track: Smells Like Teen Spirit (From "Black Widow") - Piano Version
  type: MusicRecording
  duration: PT3M46S
  duration ms: 226936
  explicit: false
  by artist: Kurt Cobain
  by artist: Dave Grohl
  by artist: Krist Novoselic
  by artist: Piano Geek
  in album: Smells Like Teen Spirit (From "Black Widow") [Piano Version]
    type: MusicAlbum
    date published: 2023-03-31
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953520
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/5PnLygEc4ploPxUVxyNFq8.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5PnLygEc4ploPxUVxyNFq8
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0xa3589eace3fcad3970ed70872f735046d6b771f6c111be934640443990ddcada","isrc":"GBRKQ2308414","name":"Smells Like Teen Spirit (From \"Black Widow\") - Piano Version","registered_at":"2026-06-11T14:37:35Z","spotify_id":"5PnLygEc4ploPxUVxyNFq8","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3589eace3fcad3970ed70872f735046d6b771f6c111be934640443990ddcada. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5PnLygEc4ploPxUVxyNFq8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5PnLygEc4ploPxUVxyNFq8.
    date published: 2026-06-13T13:32:09Z
    text: {"copyright_id":"0xa3589eace3fcad3970ed70872f735046d6b771f6c111be934640443990ddcada","isrc":"GBRKQ2308414","name":"Smells Like Teen Spirit (From \"Black Widow\") - Piano Version","registered_at":"2026-06-11T14:37:35Z","spotify_id":"5PnLygEc4ploPxUVxyNFq8","type":"track"}

About a Girl (Piano Version)
type: MusicAlbum
date published: 2023-03-30
track: About a Girl - Piano Version
  type: MusicRecording
  duration: PT1M48S
  duration ms: 108444
  explicit: false
  by artist: Kurt Cobain
  by artist: Silvano Pagliuca-Mena
  in album: About a Girl (Piano Version)
    type: MusicAlbum
    date published: 2023-03-30
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  additional property: CopyrightStatus
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x7ab77365cb66ec4fbd5b8695d1cb93bde1d44d630e447aa6539200e2caddfa90
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953520
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/1c1ayxbYTbSo8CQtxl3XPG.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1c1ayxbYTbSo8CQtxl3XPG
  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x7ab77365cb66ec4fbd5b8695d1cb93bde1d44d630e447aa6539200e2caddfa90","isrc":"QZPJ32248273","name":"About a Girl - Piano Version","registered_at":"2026-06-10T05:30:27Z","spotify_id":"1c1ayxbYTbSo8CQtxl3XPG","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab77365cb66ec4fbd5b8695d1cb93bde1d44d630e447aa6539200e2caddfa90. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1c1ayxbYTbSo8CQtxl3XPG.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1c1ayxbYTbSo8CQtxl3XPG.
    date published: 2026-06-13T13:32:09Z
    text: {"copyright_id":"0x7ab77365cb66ec4fbd5b8695d1cb93bde1d44d630e447aa6539200e2caddfa90","isrc":"QZPJ32248273","name":"About a Girl - Piano Version","registered_at":"2026-06-10T05:30:27Z","spotify_id":"1c1ayxbYTbSo8CQtxl3XPG","type":"track"}

Something In The Way (From "The Batman") [Piano Version]
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date published: 2023-03-23
track: Something In The Way (From "The Batman") - Piano Version
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  duration: PT2M48S
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    type: MusicAlbum
    date published: 2023-03-23
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  additional property: CopyrightStatus
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSRecordURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6hG0wsQI3xG3R9cxRt9M3T
  additional property: OTSTimestamp
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  additional property: OTSCanonicalRecord
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59313bad87c1e7575a8073e8b4deff5af5467234c7a127c552a3aa54339e753a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6hG0wsQI3xG3R9cxRt9M3T.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6hG0wsQI3xG3R9cxRt9M3T.
    date published: 2026-07-02T03:30:09Z
    text: {"copyright_id":"0x59313bad87c1e7575a8073e8b4deff5af5467234c7a127c552a3aa54339e753a","isrc":"USLZJ2380522","name":"Something In The Way (From \"The Batman\") - Piano Version","registered_at":"2026-06-21T06:52:36Z","spotify_id":"6hG0wsQI3xG3R9cxRt9M3T","type":"track"}

Something in the Way (Teaser Trailer From "The Batman") [Medieval Style]
type: MusicAlbum
date published: 2020-08-25
track: Something in the Way (Teaser Trailer From "The Batman") [Medieval Style]
  type: MusicRecording
  duration: PT2M40S
  duration ms: 160882
  explicit: false
  by artist: Kurt Cobain
  by artist: Celestial Aeon Project
  by artist: Bard to the Core
  in album: Something in the Way (Teaser Trailer From "The Batman") [Medieval Style]
    type: MusicAlbum
    date published: 2020-08-25
  isrc code: QZGWX2009327
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-08T02:42:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0977dcc22ddcfebde7306091f61e00a3b28697b54a17b38866fc2c99950cdaef
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953528
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953528
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/0zSasMGsH79dV4I8Lk4ODm.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0zSasMGsH79dV4I8Lk4ODm
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T15:41:10Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x0977dcc22ddcfebde7306091f61e00a3b28697b54a17b38866fc2c99950cdaef","isrc":"QZGWX2009327","name":"Something in the Way (Teaser Trailer From \"The Batman\") [Medieval Style]","registered_at":"2026-06-08T02:42:25Z","spotify_id":"0zSasMGsH79dV4I8Lk4ODm","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0977dcc22ddcfebde7306091f61e00a3b28697b54a17b38866fc2c99950cdaef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0zSasMGsH79dV4I8Lk4ODm.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/0zSasMGsH79dV4I8Lk4ODm.
    date published: 2026-06-13T15:41:10Z
    text: {"copyright_id":"0x0977dcc22ddcfebde7306091f61e00a3b28697b54a17b38866fc2c99950cdaef","isrc":"QZGWX2009327","name":"Something in the Way (Teaser Trailer From \"The Batman\") [Medieval Style]","registered_at":"2026-06-08T02:42:25Z","spotify_id":"0zSasMGsH79dV4I8Lk4ODm","type":"track"}

The "Priest" They Called Him
type: MusicAlbum
date published: 1993-01-07
track: The "Priest" They Called Him
  type: MusicRecording
  duration: PT9M42S
  duration ms: 582000
  explicit: false
  by artist: William S. Burroughs
  by artist: Kurt Cobain
  in album: The "Priest" They Called Him
    type: MusicAlbum
    date published: 1993-01-07
  isrc code: US2391542850
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-08T13:27:35+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa73008add15d3dc7f528bbbb75000dc3b4f964229aac44fd4304b98f37d2efe5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953520
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/953520
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/4J1MYzZ1qeMiISKU0YiMTW.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4J1MYzZ1qeMiISKU0YiMTW
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0xa73008add15d3dc7f528bbbb75000dc3b4f964229aac44fd4304b98f37d2efe5","isrc":"US2391542850","name":"The \"Priest\" They Called Him","registered_at":"2026-06-08T13:27:35Z","spotify_id":"4J1MYzZ1qeMiISKU0YiMTW","type":"track"}
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73008add15d3dc7f528bbbb75000dc3b4f964229aac44fd4304b98f37d2efe5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4J1MYzZ1qeMiISKU0YiMTW.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4J1MYzZ1qeMiISKU0YiMTW.
    date published: 2026-06-13T13:32:09Z
    text: {"copyright_id":"0xa73008add15d3dc7f528bbbb75000dc3b4f964229aac44fd4304b98f37d2efe5","isrc":"US2391542850","name":"The \"Priest\" They Called Him","registered_at":"2026-06-08T13:27:35Z","spotify_id":"4J1MYzZ1qeMiISKU0YiMTW","type":"track"}

Smells Like Teen Spirit (Arr. for Harp by Kristan Toczko)
type: MusicRecording
duration: PT4M33S
duration ms: 273386
explicit: false
by artist: Kurt Cobain
by artist: Krist Novoselic
by artist: Dave Grohl
by artist: HarpistKT
in album: Rock Echoes
  type: MusicAlbum
  date published: 2024-02-16
isrc code: CA4Q32400011

The Yodel Song
type: MusicRecording
duration: PT3M36S
duration ms: 216426
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514590
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T02:07:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xec50e5d9ef33e04f1144cd3bc6c4050359a877962b4f695e54d12d725418e3f4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2OTLhPcazsGflyvQ4gp4Jl.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2OTLhPcazsGflyvQ4gp4Jl
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xec50e5d9ef33e04f1144cd3bc6c4050359a877962b4f695e54d12d725418e3f4","isrc":"USUM71514590","name":"The Yodel Song","registered_at":"2026-06-07T02:07:15Z","spotify_id":"2OTLhPcazsGflyvQ4gp4Jl","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec50e5d9ef33e04f1144cd3bc6c4050359a877962b4f695e54d12d725418e3f4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2OTLhPcazsGflyvQ4gp4Jl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2OTLhPcazsGflyvQ4gp4Jl.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0xec50e5d9ef33e04f1144cd3bc6c4050359a877962b4f695e54d12d725418e3f4","isrc":"USUM71514590","name":"The Yodel Song","registered_at":"2026-06-07T02:07:15Z","spotify_id":"2OTLhPcazsGflyvQ4gp4Jl","type":"track"}

Been A Son - Early Demo
type: MusicRecording
duration: PT1M20S
duration ms: 80720
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514591
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T21:59:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xac36612dc1bc5806e2efc2ca88b74f22320bcfa4270042efadfd0ea5df9b93d1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/7KPl2cnnSvoOuXugpNt9MO.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7KPl2cnnSvoOuXugpNt9MO
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xac36612dc1bc5806e2efc2ca88b74f22320bcfa4270042efadfd0ea5df9b93d1","isrc":"USUM71514591","name":"Been A Son - Early Demo","registered_at":"2026-06-05T21:59:33Z","spotify_id":"7KPl2cnnSvoOuXugpNt9MO","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac36612dc1bc5806e2efc2ca88b74f22320bcfa4270042efadfd0ea5df9b93d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7KPl2cnnSvoOuXugpNt9MO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7KPl2cnnSvoOuXugpNt9MO.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0xac36612dc1bc5806e2efc2ca88b74f22320bcfa4270042efadfd0ea5df9b93d1","isrc":"USUM71514591","name":"Been A Son - Early Demo","registered_at":"2026-06-05T21:59:33Z","spotify_id":"7KPl2cnnSvoOuXugpNt9MO","type":"track"}

What More Can I Say
type: MusicRecording
duration: PT3M9S
duration ms: 189000
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514592
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T07:02:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0e29bb0c8309207ae6ef51f83aca3240388073ec40b5c7aa7135e1c00da134f8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/6sLCfP43HJKrnGi3FYVc0e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6sLCfP43HJKrnGi3FYVc0e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0e29bb0c8309207ae6ef51f83aca3240388073ec40b5c7aa7135e1c00da134f8","isrc":"USUM71514592","name":"What More Can I Say","registered_at":"2026-06-05T07:02:06Z","spotify_id":"6sLCfP43HJKrnGi3FYVc0e","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e29bb0c8309207ae6ef51f83aca3240388073ec40b5c7aa7135e1c00da134f8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6sLCfP43HJKrnGi3FYVc0e.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6sLCfP43HJKrnGi3FYVc0e.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0x0e29bb0c8309207ae6ef51f83aca3240388073ec40b5c7aa7135e1c00da134f8","isrc":"USUM71514592","name":"What More Can I Say","registered_at":"2026-06-05T07:02:06Z","spotify_id":"6sLCfP43HJKrnGi3FYVc0e","type":"track"}

1988 Capitol Lake Jam Commercial
type: MusicRecording
duration: PT1M27S
duration ms: 87266
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514593
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T05:18:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa62c3c5899162198d39cd69fd13c72999c90550cc1882218964625a56de89486
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/1yvbdqpcBWl9yki9zETooD.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1yvbdqpcBWl9yki9zETooD
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa62c3c5899162198d39cd69fd13c72999c90550cc1882218964625a56de89486","isrc":"USUM71514593","name":"1988 Capitol Lake Jam Commercial","registered_at":"2026-06-09T05:18:32Z","spotify_id":"1yvbdqpcBWl9yki9zETooD","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62c3c5899162198d39cd69fd13c72999c90550cc1882218964625a56de89486. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1yvbdqpcBWl9yki9zETooD.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1yvbdqpcBWl9yki9zETooD.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xa62c3c5899162198d39cd69fd13c72999c90550cc1882218964625a56de89486","isrc":"USUM71514593","name":"1988 Capitol Lake Jam Commercial","registered_at":"2026-06-09T05:18:32Z","spotify_id":"1yvbdqpcBWl9yki9zETooD","type":"track"}

The Happy Guitar
type: MusicRecording
duration: PT2M12S
duration ms: 132346
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514594
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T05:26:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf4a47537ae8c5c394c7e16057c9cbc43b23b4b7619fd502e7a019b550adb6005
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/6wCOM2LSSXiGhrIwMPLKAz.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6wCOM2LSSXiGhrIwMPLKAz
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf4a47537ae8c5c394c7e16057c9cbc43b23b4b7619fd502e7a019b550adb6005","isrc":"USUM71514594","name":"The Happy Guitar","registered_at":"2026-06-06T05:26:58Z","spotify_id":"6wCOM2LSSXiGhrIwMPLKAz","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a47537ae8c5c394c7e16057c9cbc43b23b4b7619fd502e7a019b550adb6005. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6wCOM2LSSXiGhrIwMPLKAz.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6wCOM2LSSXiGhrIwMPLKAz.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xf4a47537ae8c5c394c7e16057c9cbc43b23b4b7619fd502e7a019b550adb6005","isrc":"USUM71514594","name":"The Happy Guitar","registered_at":"2026-06-06T05:26:58Z","spotify_id":"6wCOM2LSSXiGhrIwMPLKAz","type":"track"}

Montage Of Kurt
type: MusicRecording
duration: PT2M11S
duration ms: 131906
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514595
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T13:24:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb769636eab2c016e13844b70249c69735d765d2dc3735d45b382b50967e8e85e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953520
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/7ct44bcXIGx2dgnLDPDrAE.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7ct44bcXIGx2dgnLDPDrAE
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb769636eab2c016e13844b70249c69735d765d2dc3735d45b382b50967e8e85e","isrc":"USUM71514595","name":"Montage Of Kurt","registered_at":"2026-06-08T13:24:35Z","spotify_id":"7ct44bcXIGx2dgnLDPDrAE","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb769636eab2c016e13844b70249c69735d765d2dc3735d45b382b50967e8e85e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7ct44bcXIGx2dgnLDPDrAE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7ct44bcXIGx2dgnLDPDrAE.
  date published: 2026-06-13T13:32:09Z
  text: {"copyright_id":"0xb769636eab2c016e13844b70249c69735d765d2dc3735d45b382b50967e8e85e","isrc":"USUM71514595","name":"Montage Of Kurt","registered_at":"2026-06-08T13:24:35Z","spotify_id":"7ct44bcXIGx2dgnLDPDrAE","type":"track"}

Beans
type: MusicRecording
duration: PT1M21S
duration ms: 81826
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514596
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T13:02:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc93a44ec61fa88eed22817cccd0bfd564c6e3de337f69f4328a0a26a4a1ab1b1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953513
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/47omQ9pQxFfFgUPhziUdHp.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/47omQ9pQxFfFgUPhziUdHp
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93a44ec61fa88eed22817cccd0bfd564c6e3de337f69f4328a0a26a4a1ab1b1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/47omQ9pQxFfFgUPhziUdHp.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/47omQ9pQxFfFgUPhziUdHp.
  date published: 2026-06-13T12:47:07Z

Burn The Rain
type: MusicRecording
duration: PT1M16S
duration ms: 76453
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514597
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T10:40:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x24457de044b5292d37e23b60097351c47af8925c6908dabbbf202473468276c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953513
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/5EndcDV7pcbLO4jE2GBZwC.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5EndcDV7pcbLO4jE2GBZwC
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x24457de044b5292d37e23b60097351c47af8925c6908dabbbf202473468276c2","isrc":"USUM71514597","name":"Burn The Rain","registered_at":"2026-06-04T10:40:20Z","spotify_id":"5EndcDV7pcbLO4jE2GBZwC","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24457de044b5292d37e23b60097351c47af8925c6908dabbbf202473468276c2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5EndcDV7pcbLO4jE2GBZwC.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5EndcDV7pcbLO4jE2GBZwC.
  date published: 2026-06-13T12:47:07Z
  text: {"copyright_id":"0x24457de044b5292d37e23b60097351c47af8925c6908dabbbf202473468276c2","isrc":"USUM71514597","name":"Burn The Rain","registered_at":"2026-06-04T10:40:20Z","spotify_id":"5EndcDV7pcbLO4jE2GBZwC","type":"track"}

Clean Up Before She Comes - Early Demo
type: MusicRecording
duration: PT2M34S
duration ms: 154600
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514598
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T08:26:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x937d2d8912f1694a8842a4947954d279c1882de621e420685b5efa308d86bf7f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/7huPE4UrKSu4q8GlokNZUA.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7huPE4UrKSu4q8GlokNZUA
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x937d2d8912f1694a8842a4947954d279c1882de621e420685b5efa308d86bf7f","isrc":"USUM71514598","name":"Clean Up Before She Comes - Early Demo","registered_at":"2026-06-07T08:26:21Z","spotify_id":"7huPE4UrKSu4q8GlokNZUA","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937d2d8912f1694a8842a4947954d279c1882de621e420685b5efa308d86bf7f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7huPE4UrKSu4q8GlokNZUA.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7huPE4UrKSu4q8GlokNZUA.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0x937d2d8912f1694a8842a4947954d279c1882de621e420685b5efa308d86bf7f","isrc":"USUM71514598","name":"Clean Up Before She Comes - Early Demo","registered_at":"2026-06-07T08:26:21Z","spotify_id":"7huPE4UrKSu4q8GlokNZUA","type":"track"}

Reverb Experiment
type: MusicRecording
duration: PT2M52S
duration ms: 172253
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514599
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T05:41:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8a95252280ee1f4ab43fc428dd6f1a59af40df32234dbf31ca281900fb8a6c43
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/08tCseii0ZYajWvOMhbpxk.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/08tCseii0ZYajWvOMhbpxk
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8a95252280ee1f4ab43fc428dd6f1a59af40df32234dbf31ca281900fb8a6c43","isrc":"USUM71514599","name":"Reverb Experiment","registered_at":"2026-06-10T05:41:19Z","spotify_id":"08tCseii0ZYajWvOMhbpxk","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a95252280ee1f4ab43fc428dd6f1a59af40df32234dbf31ca281900fb8a6c43. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/08tCseii0ZYajWvOMhbpxk.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/08tCseii0ZYajWvOMhbpxk.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x8a95252280ee1f4ab43fc428dd6f1a59af40df32234dbf31ca281900fb8a6c43","isrc":"USUM71514599","name":"Reverb Experiment","registered_at":"2026-06-10T05:41:19Z","spotify_id":"08tCseii0ZYajWvOMhbpxk","type":"track"}

Montage Of Kurt II
type: MusicRecording
duration: PT1M8S
duration ms: 68920
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514600
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T19:32:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x69f7060da49030e693ee1a05d3a4ea0ed0ee23342ff2dd24505677fce26d9bb9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/2kZ4qFcQ8pGKZsQypzRfSm.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2kZ4qFcQ8pGKZsQypzRfSm
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x69f7060da49030e693ee1a05d3a4ea0ed0ee23342ff2dd24505677fce26d9bb9","isrc":"USUM71514600","name":"Montage Of Kurt II","registered_at":"2026-06-10T19:32:00Z","spotify_id":"2kZ4qFcQ8pGKZsQypzRfSm","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f7060da49030e693ee1a05d3a4ea0ed0ee23342ff2dd24505677fce26d9bb9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2kZ4qFcQ8pGKZsQypzRfSm.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2kZ4qFcQ8pGKZsQypzRfSm.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x69f7060da49030e693ee1a05d3a4ea0ed0ee23342ff2dd24505677fce26d9bb9","isrc":"USUM71514600","name":"Montage Of Kurt II","registered_at":"2026-06-10T19:32:00Z","spotify_id":"2kZ4qFcQ8pGKZsQypzRfSm","type":"track"}

Rehash
type: MusicRecording
duration: PT2M35S
duration ms: 155160
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514601
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T13:23:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcf3f13dfd76ae01e7037799fe0e6bcb876942ae0afbae0c0b48b687e332c1676
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953528
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/7r9Bmw21bdrQk2UFvo52cF.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7r9Bmw21bdrQk2UFvo52cF
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3f13dfd76ae01e7037799fe0e6bcb876942ae0afbae0c0b48b687e332c1676. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7r9Bmw21bdrQk2UFvo52cF.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7r9Bmw21bdrQk2UFvo52cF.
  date published: 2026-06-13T15:41:10Z

You Can’t Change Me / Burn My Britches / Something In The Way - Early Demo
type: MusicRecording
duration: PT4M18S
duration ms: 258866
explicit: false
by artist: Kurt Cobain
in album: Montage Of Heck: The Home Recordings (Deluxe Soundtrack)
  type: MusicAlbum
  date published: 2015-11-13
isrc code: USUM71514602
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T21:41:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6b9eb4b9b04202b4d37a2a6d7b142be46ccd464c028bb8e56cd52503e6a56c31
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953536
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/3rcAn7pfzaCuSaJtKWL7hW.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3rcAn7pfzaCuSaJtKWL7hW
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6b9eb4b9b04202b4d37a2a6d7b142be46ccd464c028bb8e56cd52503e6a56c31","isrc":"USUM71514602","name":"You Can’t Change Me / Burn My Britches / Something In The Way - Early Demo","registered_at":"2026-06-08T21:41:30Z","spotify_id":"3rcAn7pfzaCuSaJtKWL7hW","type":"track"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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Scoff - Early Demo
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subject of: OpenTimestamps Proof of Existence
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Aberdeen
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subject of: OpenTimestamps Proof of Existence
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Bright Smile
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subject of: OpenTimestamps Proof of Existence
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Underground Celebritism
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Retreat
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subject of: OpenTimestamps Proof of Existence
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Desire
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subject of: OpenTimestamps Proof of Existence
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