Takahiro Izumikawa
type: MusicGroup
popularity: 36
followers: 2046
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf80f53f88f41edf3e0c0f307ba57d3fe56d3eb50726d45015f6c65265f1ba404
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/953408
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/66f9c2a8-3b6a-4004-bce5-ea9408c76e22.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/66f9c2a8-3b6a-4004-bce5-ea9408c76e22.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/66f9c2a8-3b6a-4004-bce5-ea9408c76e22
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:28:13Z
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. 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 0xf80f53f88f41edf3e0c0f307ba57d3fe56d3eb50726d45015f6c65265f1ba404. 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/66f9c2a8-3b6a-4004-bce5-ea9408c76e22.json and https://artists.proofprofile.net/proofs/artist/66f9c2a8-3b6a-4004-bce5-ea9408c76e22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
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album: Hopeless Romantic
  type: MusicAlbum
  date published: 2023-10-06
  track: Adventure with You
    type: MusicRecording
    duration: PT3M30S
    duration ms: 210400
    explicit: false
    by artist: Sarah Kang
    by artist: Cy Leo
    in album: Hopeless Romantic
      type: MusicAlbum
      date published: 2023-10-06
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    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      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/1ims5Go3orpmscSVtB1TyD.json
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1ims5Go3orpmscSVtB1TyD
    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
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061b13a7db4d867ea17f6c6bf4dc48c7971c4dae3cec4a943c16060f46da1e66. 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/1ims5Go3orpmscSVtB1TyD.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/1ims5Go3orpmscSVtB1TyD.
      date published: 2026-06-13T15:41:10Z
      text: {"copyright_id":"0x061b13a7db4d867ea17f6c6bf4dc48c7971c4dae3cec4a943c16060f46da1e66","isrc":"QZMEQ2359558","name":"Adventure with You","registered_at":"2026-06-06T16:35:16Z","spotify_id":"1ims5Go3orpmscSVtB1TyD","type":"track"}
  track: Corner Cafe
    type: MusicRecording
    duration: PT3M21S
    duration ms: 201106
    explicit: false
    by artist: Sarah Kang
    in album: Hopeless Romantic
      type: MusicAlbum
      date published: 2023-10-06
    isrc code: QZK6G2326589
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-05T21:05:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x180c36b7b6fb8af7f9bed67274b66c407cdcdb8001e50398de7156096b9d5d0e
    additional property: OTSHash
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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/2FHV77aozR3u4xBVTOsGb7.json
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2FHV77aozR3u4xBVTOsGb7
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T12:47:07Z
    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 0x180c36b7b6fb8af7f9bed67274b66c407cdcdb8001e50398de7156096b9d5d0e. 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/2FHV77aozR3u4xBVTOsGb7.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/2FHV77aozR3u4xBVTOsGb7.
      date published: 2026-06-13T12:47:07Z
      text: {"copyright_id":"0x180c36b7b6fb8af7f9bed67274b66c407cdcdb8001e50398de7156096b9d5d0e","isrc":"QZK6G2326589","name":"Corner Cafe","registered_at":"2026-06-05T21:05:47Z","spotify_id":"2FHV77aozR3u4xBVTOsGb7","type":"track"}
  track: Hopeless Romantic
    type: MusicRecording
    duration: PT4M31S
    duration ms: 271573
    explicit: false
    by artist: Sarah Kang
    in album: Hopeless Romantic
      type: MusicAlbum
      date published: 2023-10-06
    isrc code: QZHNB2390668
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-04T12:55:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5acb3d966af6c5446a8094eacd837f6e54e7272603ea4c1238c0d0d1b9a0e560
    additional property: OTSHash
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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/2weYShnhca3hSzd5AkSIdl.json
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2weYShnhca3hSzd5AkSIdl
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-06-13T17:25:41Z
    additional property: OTSCanonicalRecord
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      value: {"copyright_id":"0x5acb3d966af6c5446a8094eacd837f6e54e7272603ea4c1238c0d0d1b9a0e560","isrc":"QZHNB2390668","name":"Hopeless Romantic","registered_at":"2026-06-04T12:55:38Z","spotify_id":"2weYShnhca3hSzd5AkSIdl","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 0x5acb3d966af6c5446a8094eacd837f6e54e7272603ea4c1238c0d0d1b9a0e560. 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/2weYShnhca3hSzd5AkSIdl.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/2weYShnhca3hSzd5AkSIdl.
      date published: 2026-06-13T17:25:41Z
      text: {"copyright_id":"0x5acb3d966af6c5446a8094eacd837f6e54e7272603ea4c1238c0d0d1b9a0e560","isrc":"QZHNB2390668","name":"Hopeless Romantic","registered_at":"2026-06-04T12:55:38Z","spotify_id":"2weYShnhca3hSzd5AkSIdl","type":"track"}
  track: We're All Gonna Die Anyway
    type: MusicRecording
    duration: PT3M9S
    duration ms: 189706
    explicit: false
    by artist: Sarah Kang
    by artist: Jackson Lundy
    in album: Hopeless Romantic
      type: MusicAlbum
      date published: 2023-10-06
    isrc code: QZMEQ2359559
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-07T12:51:22+00:00
    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: It's You I Like
  track: Pluto
  track: Roses on Valentine's Day
  track: All Over Again
  track: Maybe the World is a Beautiful Place
  track: You Are the Same, Today and Yesterday
album: how i remember
album: Hopeless Romantic, Pt. 1
album: about time
album: Outage
album: Life Is Your Thoughts
album: Curtain Call
album: Unaffected Spell
album: My Wishes (Sped Up Version)
album: My Wishes
album: あ (A) [Davie Napalm Remix]
album: 流 (Ru)
album: 会話 (Dialogue)
album: あ(A)
album: 万葉 (Manyou)
album: Nibitone
album: Carry me away with you
album: Tendan Blue
album: Kizanka
album: Smiling
album: We Need Love
album: Hedron
album: Nostargeology
album: Lost Home
album: Down Stream
album: Find Your Ore
album: The Truth
album: Horizons
album: After The Frost
album: Star Rail HoYoFair Music Selection #2 "S.P.A.R.K.L.E"
album: Time (Reprise)
album: Ready For Love
album: Time
track: It's You I Like
track: 万葉 (Manyou)
track: あ (A)
track: Life Is Your Thoughts
track: Curtain Call
track: 水木 (Mizuki)
track: My Wishes
track: あ (A) - Davie Napalm Remix
track: 会話 (Dialogue)
track: 停電 (Outage)
track: 静か (Hush)
track: Ready For Love
track: Time
track: Introduction
track: No Satisfaction
track: Higan
track: Trigger
track: Shigan
track: Walk Alone

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x1dd60a3e8488b7aa54a00478d8f2f073ba0a61f969a426618c82cc148aa539d6

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 953515

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block/953515

OTSRecordURL
type: PropertyValue
value: https://artists.proofprofile.net/proofs/track/27QjgbYplMiPBoBvq3cefE.json

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/27QjgbYplMiPBoBvq3cefE

OTSTimestamp
type: PropertyValue
value: 2026-06-13T12:53:06Z

OTSCanonicalRecord
type: PropertyValue
value: {"copyright_id":"0x1dd60a3e8488b7aa54a00478d8f2f073ba0a61f969a426618c82cc148aa539d6","isrc":"QZMEQ2359559","name":"We're All Gonna Die Anyway","registered_at":"2026-06-07T12:51:22Z","spotify_id":"27QjgbYplMiPBoBvq3cefE","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 0x1dd60a3e8488b7aa54a00478d8f2f073ba0a61f969a426618c82cc148aa539d6. 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/27QjgbYplMiPBoBvq3cefE.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/27QjgbYplMiPBoBvq3cefE.
date published: 2026-06-13T12:53:06Z
text: {"copyright_id":"0x1dd60a3e8488b7aa54a00478d8f2f073ba0a61f969a426618c82cc148aa539d6","isrc":"QZMEQ2359559","name":"We're All Gonna Die Anyway","registered_at":"2026-06-07T12:51:22Z","spotify_id":"27QjgbYplMiPBoBvq3cefE","type":"track"}

It's You I Like
type: MusicRecording
duration: PT2M58S
duration ms: 178773
explicit: false
by artist: Sarah Kang
by artist: Takahiro Izumikawa
in album: Hopeless Romantic
  type: MusicAlbum
  date published: 2023-10-06
isrc code: QZMEQ2359560
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T09:31:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43
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/2WhVg68MpNyB63VWG7NaRG.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2WhVg68MpNyB63VWG7NaRG
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43","isrc":"QZMEQ2359560","name":"It's You I Like","registered_at":"2026-06-06T09:31:55Z","spotify_id":"2WhVg68MpNyB63VWG7NaRG","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 0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43. 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/2WhVg68MpNyB63VWG7NaRG.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/2WhVg68MpNyB63VWG7NaRG.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43","isrc":"QZMEQ2359560","name":"It's You I Like","registered_at":"2026-06-06T09:31:55Z","spotify_id":"2WhVg68MpNyB63VWG7NaRG","type":"track"}

Pluto
type: MusicRecording
duration: PT3M18S
duration ms: 198280
explicit: false
by artist: Sarah Kang
by artist: TRADE L
in album: Hopeless Romantic
  type: MusicAlbum
  date published: 2023-10-06
isrc code: QZNWW2395861
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T19:04:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6b98d2bccb653848da8213e615fede2da9a3d8e4aae7be59ed7e0ca7a9c47923
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/4z6QhaBP60Zjrr01p5qqYE.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4z6QhaBP60Zjrr01p5qqYE
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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 0x6b98d2bccb653848da8213e615fede2da9a3d8e4aae7be59ed7e0ca7a9c47923. 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/4z6QhaBP60Zjrr01p5qqYE.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/4z6QhaBP60Zjrr01p5qqYE.
  date published: 2026-06-13T17:25:41Z

Roses on Valentine's Day
type: MusicRecording
duration: PT3M3S
duration ms: 183720
explicit: false
by artist: Sarah Kang
in album: Hopeless Romantic
  type: MusicAlbum
  date published: 2023-10-06
isrc code: QZTAX2313265
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T16:33:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xad30cf1c193912b6062c3754446baf31e468301d1e3cda5eb1a1adcfdad5da4e
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/2ygVg4URNYE5nG8axNJncD.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2ygVg4URNYE5nG8axNJncD
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xad30cf1c193912b6062c3754446baf31e468301d1e3cda5eb1a1adcfdad5da4e","isrc":"QZTAX2313265","name":"Roses on Valentine's Day","registered_at":"2026-06-06T16:33:55Z","spotify_id":"2ygVg4URNYE5nG8axNJncD","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 0xad30cf1c193912b6062c3754446baf31e468301d1e3cda5eb1a1adcfdad5da4e. 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/2ygVg4URNYE5nG8axNJncD.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/2ygVg4URNYE5nG8axNJncD.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xad30cf1c193912b6062c3754446baf31e468301d1e3cda5eb1a1adcfdad5da4e","isrc":"QZTAX2313265","name":"Roses on Valentine's Day","registered_at":"2026-06-06T16:33:55Z","spotify_id":"2ygVg4URNYE5nG8axNJncD","type":"track"}

All Over Again
type: MusicRecording
duration: PT2M58S
duration ms: 178720
explicit: false
by artist: Sarah Kang
by artist: Johnny Stimson
in album: Hopeless Romantic
  type: MusicAlbum
  date published: 2023-10-06
isrc code: QZPLR2376004
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T12:05:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc27a433a9451132b06be87f5f4e26733493784dc38096a8608bf1fd71cb1baf5
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/3lSUdHijc48yet4QaGSWg7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3lSUdHijc48yet4QaGSWg7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc27a433a9451132b06be87f5f4e26733493784dc38096a8608bf1fd71cb1baf5","isrc":"QZPLR2376004","name":"All Over Again","registered_at":"2026-06-04T12:05:00Z","spotify_id":"3lSUdHijc48yet4QaGSWg7","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 0xc27a433a9451132b06be87f5f4e26733493784dc38096a8608bf1fd71cb1baf5. 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/3lSUdHijc48yet4QaGSWg7.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/3lSUdHijc48yet4QaGSWg7.
  date published: 2026-06-13T12:47:07Z
  text: {"copyright_id":"0xc27a433a9451132b06be87f5f4e26733493784dc38096a8608bf1fd71cb1baf5","isrc":"QZPLR2376004","name":"All Over Again","registered_at":"2026-06-04T12:05:00Z","spotify_id":"3lSUdHijc48yet4QaGSWg7","type":"track"}

Maybe the World is a Beautiful Place
type: MusicRecording
duration: PT3M35S
duration ms: 215426
explicit: false
by artist: Sarah Kang
by artist: Lee Jin Ah
in album: Hopeless Romantic
  type: MusicAlbum
  date published: 2023-10-06
isrc code: QZTAZ2338010
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T02:22:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0a0a88db62c750c7dc2f99116bad7d35dfaa76df5f9e93c957212155a7cfe717
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/6kHt1PSTReFgz2pMEvFDCT.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6kHt1PSTReFgz2pMEvFDCT
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0a0a88db62c750c7dc2f99116bad7d35dfaa76df5f9e93c957212155a7cfe717","isrc":"QZTAZ2338010","name":"Maybe the World is a Beautiful Place","registered_at":"2026-06-08T02:22:28Z","spotify_id":"6kHt1PSTReFgz2pMEvFDCT","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 0x0a0a88db62c750c7dc2f99116bad7d35dfaa76df5f9e93c957212155a7cfe717. 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/6kHt1PSTReFgz2pMEvFDCT.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/6kHt1PSTReFgz2pMEvFDCT.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0x0a0a88db62c750c7dc2f99116bad7d35dfaa76df5f9e93c957212155a7cfe717","isrc":"QZTAZ2338010","name":"Maybe the World is a Beautiful Place","registered_at":"2026-06-08T02:22:28Z","spotify_id":"6kHt1PSTReFgz2pMEvFDCT","type":"track"}

You Are the Same, Today and Yesterday
type: MusicRecording
duration: PT2M6S
duration ms: 126200
explicit: false
by artist: Sarah Kang
in album: Hopeless Romantic
  type: MusicAlbum
  date published: 2023-10-06
isrc code: QZTAZ2338011
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T19:08:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xffa4d6c2ba42bc1c6d0d800792842186aa5d8a11a2b8074e9fbd403d2d3751f1
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/1q3ohbZ5GoKAaKnoQM8svG.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1q3ohbZ5GoKAaKnoQM8svG
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xffa4d6c2ba42bc1c6d0d800792842186aa5d8a11a2b8074e9fbd403d2d3751f1","isrc":"QZTAZ2338011","name":"You Are the Same, Today and Yesterday","registered_at":"2026-06-08T19:08:44Z","spotify_id":"1q3ohbZ5GoKAaKnoQM8svG","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 0xffa4d6c2ba42bc1c6d0d800792842186aa5d8a11a2b8074e9fbd403d2d3751f1. 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/1q3ohbZ5GoKAaKnoQM8svG.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/1q3ohbZ5GoKAaKnoQM8svG.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0xffa4d6c2ba42bc1c6d0d800792842186aa5d8a11a2b8074e9fbd403d2d3751f1","isrc":"QZTAZ2338011","name":"You Are the Same, Today and Yesterday","registered_at":"2026-06-08T19:08:44Z","spotify_id":"1q3ohbZ5GoKAaKnoQM8svG","type":"track"}

how i remember
type: MusicAlbum
date published: 2022-10-14
track: prologue
  type: MusicRecording
  duration: PT3M20S
  duration ms: 200901
  explicit: false
  by artist: Sarah Kang
  by artist: okhissa
  in album: how i remember
    type: MusicAlbum
    date published: 2022-10-14
  isrc code: QZFZ22214841
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-07T11:35:15+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb8fa015c1b2c2cbe56da4fc70f88517bc5e655783c008bd638bad0fc404f8acf
  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/1OvHWbXwBOuJTml3RDT9v6.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1OvHWbXwBOuJTml3RDT9v6
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T17:25:41Z
  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 0xb8fa015c1b2c2cbe56da4fc70f88517bc5e655783c008bd638bad0fc404f8acf. 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/1OvHWbXwBOuJTml3RDT9v6.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/1OvHWbXwBOuJTml3RDT9v6.
    date published: 2026-06-13T17:25:41Z
track: cheeze
  type: MusicRecording
  duration: PT2M38S
  duration ms: 158804
  explicit: false
  by artist: Sarah Kang
  by artist: Andrew Kang
  in album: how i remember
    type: MusicAlbum
    date published: 2022-10-14
  isrc code: QZFZ42224173
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-04T08:14:58+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x931f4705a41df2310425a5ba014bfa74d48df187fe0e59399ccb3c1086a7070d
  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/6JQfQXQ2xdZD6x516xNRJI.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6JQfQXQ2xdZD6x516xNRJI
  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 0x931f4705a41df2310425a5ba014bfa74d48df187fe0e59399ccb3c1086a7070d. 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/6JQfQXQ2xdZD6x516xNRJI.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/6JQfQXQ2xdZD6x516xNRJI.
    date published: 2026-06-13T12:47:07Z
track: once in a moon
  type: MusicRecording
  duration: PT4M5S
  duration ms: 245175
  explicit: false
  by artist: Sarah Kang
  in album: how i remember
    type: MusicAlbum
    date published: 2022-10-14
  isrc code: QZDA72247108
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-04T05:22:45+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd0aed312eb752eb2223729985cabfb8fb796c2883d6ac7177104c34ca6ae4087
  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/1OefEa9FQ4XxiYRC1cv3GI.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1OefEa9FQ4XxiYRC1cv3GI
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T15:41:10Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0xd0aed312eb752eb2223729985cabfb8fb796c2883d6ac7177104c34ca6ae4087","isrc":"QZDA72247108","name":"once in a moon","registered_at":"2026-06-04T05:22:45Z","spotify_id":"1OefEa9FQ4XxiYRC1cv3GI","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 0xd0aed312eb752eb2223729985cabfb8fb796c2883d6ac7177104c34ca6ae4087. 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/1OefEa9FQ4XxiYRC1cv3GI.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/1OefEa9FQ4XxiYRC1cv3GI.
    date published: 2026-06-13T15:41:10Z
    text: {"copyright_id":"0xd0aed312eb752eb2223729985cabfb8fb796c2883d6ac7177104c34ca6ae4087","isrc":"QZDA72247108","name":"once in a moon","registered_at":"2026-06-04T05:22:45Z","spotify_id":"1OefEa9FQ4XxiYRC1cv3GI","type":"track"}
track: miss u
  type: MusicRecording
  duration: PT3M18S
  duration ms: 198077
  explicit: false
  by artist: Sarah Kang
  in album: how i remember
    type: MusicAlbum
    date published: 2022-10-14
  isrc code: QZES82229120
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-06T02:17:06+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3948bdd7135b1c4bb96bdb37c437405b528f60e97de80c6f9d190787103681b5
  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/44jlEH9SaursDip4dLmrLE.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/44jlEH9SaursDip4dLmrLE
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T15:41:10Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x3948bdd7135b1c4bb96bdb37c437405b528f60e97de80c6f9d190787103681b5","isrc":"QZES82229120","name":"miss u","registered_at":"2026-06-06T02:17:06Z","spotify_id":"44jlEH9SaursDip4dLmrLE","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 0x3948bdd7135b1c4bb96bdb37c437405b528f60e97de80c6f9d190787103681b5. 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/44jlEH9SaursDip4dLmrLE.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/44jlEH9SaursDip4dLmrLE.
    date published: 2026-06-13T15:41:10Z
    text: {"copyright_id":"0x3948bdd7135b1c4bb96bdb37c437405b528f60e97de80c6f9d190787103681b5","isrc":"QZES82229120","name":"miss u","registered_at":"2026-06-06T02:17:06Z","spotify_id":"44jlEH9SaursDip4dLmrLE","type":"track"}
track: goodnight
  type: MusicRecording
  duration: PT2M56S
  duration ms: 176626
  explicit: false
  by artist: Sarah Kang
  by artist: Juju B. Goode
  in album: how i remember
    type: MusicAlbum
    date published: 2022-10-14
  isrc code: QZHN32287954
  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: sweet dreams (interlude)
track: about time
track: let's run away
track: isn't it enough
track: handbook
track: end credits
track: epilogue

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-06-05T07:26:33+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x1966637315ba79c5b843e25102a740293abeb4227e5cf14e36728795d8868594

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/4pqmFRZiyZSWbTGiF3CSvb.json

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4pqmFRZiyZSWbTGiF3CSvb

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

OTSCanonicalRecord
type: PropertyValue

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 0x1966637315ba79c5b843e25102a740293abeb4227e5cf14e36728795d8868594. 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/4pqmFRZiyZSWbTGiF3CSvb.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/4pqmFRZiyZSWbTGiF3CSvb.
date published: 2026-06-13T15:41:10Z

sweet dreams (interlude)
type: MusicRecording
duration: PT0M55S
duration ms: 55479
explicit: false
by artist: Sarah Kang
in album: how i remember
  type: MusicAlbum
  date published: 2022-10-14
isrc code: QZNWY2219307
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-11T04:26:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x34f3c7f0e75627d957ac7c94c9f2275365e60b3fbd3f12a6418bc7c2117d15f4
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/2zywHSQUyiECdeNrmclmNm.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2zywHSQUyiECdeNrmclmNm
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x34f3c7f0e75627d957ac7c94c9f2275365e60b3fbd3f12a6418bc7c2117d15f4","isrc":"QZNWY2219307","name":"sweet dreams (interlude)","registered_at":"2026-06-11T04:26:09Z","spotify_id":"2zywHSQUyiECdeNrmclmNm","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 0x34f3c7f0e75627d957ac7c94c9f2275365e60b3fbd3f12a6418bc7c2117d15f4. 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/2zywHSQUyiECdeNrmclmNm.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/2zywHSQUyiECdeNrmclmNm.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0x34f3c7f0e75627d957ac7c94c9f2275365e60b3fbd3f12a6418bc7c2117d15f4","isrc":"QZNWY2219307","name":"sweet dreams (interlude)","registered_at":"2026-06-11T04:26:09Z","spotify_id":"2zywHSQUyiECdeNrmclmNm","type":"track"}

about time
type: MusicRecording
duration: PT3M13S
duration ms: 193047
explicit: false
by artist: Sarah Kang
by artist: Takahiro Izumikawa
in album: how i remember
  type: MusicAlbum
  date published: 2022-10-14
isrc code: QZK6P2294654
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T08:14:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfbf4cee115e721f21b4de6f3fe9b9e5059bc6a6da076b2518358e14e5c610ee4
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/6hytpsQlp7dDrqyHN6WtNN.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6hytpsQlp7dDrqyHN6WtNN
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfbf4cee115e721f21b4de6f3fe9b9e5059bc6a6da076b2518358e14e5c610ee4","isrc":"QZK6P2294654","name":"about time","registered_at":"2026-06-04T08:14:18Z","spotify_id":"6hytpsQlp7dDrqyHN6WtNN","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 0xfbf4cee115e721f21b4de6f3fe9b9e5059bc6a6da076b2518358e14e5c610ee4. 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/6hytpsQlp7dDrqyHN6WtNN.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/6hytpsQlp7dDrqyHN6WtNN.
  date published: 2026-06-13T12:47:07Z
  text: {"copyright_id":"0xfbf4cee115e721f21b4de6f3fe9b9e5059bc6a6da076b2518358e14e5c610ee4","isrc":"QZK6P2294654","name":"about time","registered_at":"2026-06-04T08:14:18Z","spotify_id":"6hytpsQlp7dDrqyHN6WtNN","type":"track"}

let's run away
type: MusicRecording
duration: PT3M25S
duration ms: 205094
explicit: false
by artist: Sarah Kang
by artist: Orion Song
in album: how i remember
  type: MusicAlbum
  date published: 2022-10-14
isrc code: QZK6K2278368
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-04T11:52:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xae1723573f27e8083b1761a2fa56e8a4f218968ca9f53b5408446a57d152b524
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/1nwaAlh4hnKCCV9ZlijNDb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1nwaAlh4hnKCCV9ZlijNDb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:47:07Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xae1723573f27e8083b1761a2fa56e8a4f218968ca9f53b5408446a57d152b524","isrc":"QZK6K2278368","name":"let's run away","registered_at":"2026-06-04T11:52:42Z","spotify_id":"1nwaAlh4hnKCCV9ZlijNDb","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 0xae1723573f27e8083b1761a2fa56e8a4f218968ca9f53b5408446a57d152b524. 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/1nwaAlh4hnKCCV9ZlijNDb.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/1nwaAlh4hnKCCV9ZlijNDb.
  date published: 2026-06-13T12:47:07Z
  text: {"copyright_id":"0xae1723573f27e8083b1761a2fa56e8a4f218968ca9f53b5408446a57d152b524","isrc":"QZK6K2278368","name":"let's run away","registered_at":"2026-06-04T11:52:42Z","spotify_id":"1nwaAlh4hnKCCV9ZlijNDb","type":"track"}

isn't it enough
type: MusicRecording
duration: PT3M42S
duration ms: 222095
explicit: false
by artist: Sarah Kang
by artist: Albert Posis
in album: how i remember
  type: MusicAlbum
  date published: 2022-10-14
isrc code: QZMEM2270105
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T09:38:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb53aed202733060f89d555c4e159717b6fc27cec977c0168e54cc7b26c0e3712
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/4n6kRdRAW4iOtxCKprwI2Z.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4n6kRdRAW4iOtxCKprwI2Z
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb53aed202733060f89d555c4e159717b6fc27cec977c0168e54cc7b26c0e3712","isrc":"QZMEM2270105","name":"isn't it enough","registered_at":"2026-06-07T09:38:30Z","spotify_id":"4n6kRdRAW4iOtxCKprwI2Z","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 0xb53aed202733060f89d555c4e159717b6fc27cec977c0168e54cc7b26c0e3712. 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/4n6kRdRAW4iOtxCKprwI2Z.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/4n6kRdRAW4iOtxCKprwI2Z.
  date published: 2026-06-13T17:25:41Z
  text: {"copyright_id":"0xb53aed202733060f89d555c4e159717b6fc27cec977c0168e54cc7b26c0e3712","isrc":"QZMEM2270105","name":"isn't it enough","registered_at":"2026-06-07T09:38:30Z","spotify_id":"4n6kRdRAW4iOtxCKprwI2Z","type":"track"}

handbook
type: MusicRecording
duration: PT3M15S
duration ms: 195215
explicit: false
by artist: Sarah Kang
by artist: Nieman
in album: how i remember
  type: MusicAlbum
  date published: 2022-10-14
isrc code: QZNWT2264036
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T22:14:38+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2e9d6dd70e204f436859660bdcad70b0e237ed865313557670e152d04d12670a
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/2Y1hrk0FXGAkaDeybYjeOo.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2Y1hrk0FXGAkaDeybYjeOo
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
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 0x2e9d6dd70e204f436859660bdcad70b0e237ed865313557670e152d04d12670a. 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/2Y1hrk0FXGAkaDeybYjeOo.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/2Y1hrk0FXGAkaDeybYjeOo.
  date published: 2026-06-13T17:25:41Z

end credits
type: MusicRecording
duration: PT4M8S
duration ms: 248500
explicit: false
by artist: Sarah Kang
in album: how i remember
  type: MusicAlbum
  date published: 2022-10-14
isrc code: QZNWX2269130
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-05T20:33:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x72bd8dcf6b782e15cbbe06b1cee849d31b9b405d7c4ba2f7c303f183b23381a1
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/5pt77s4Vt9RGvveriqai7A.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/5pt77s4Vt9RGvveriqai7A
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x72bd8dcf6b782e15cbbe06b1cee849d31b9b405d7c4ba2f7c303f183b23381a1","isrc":"QZNWX2269130","name":"end credits","registered_at":"2026-06-05T20:33:41Z","spotify_id":"5pt77s4Vt9RGvveriqai7A","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 0x72bd8dcf6b782e15cbbe06b1cee849d31b9b405d7c4ba2f7c303f183b23381a1. 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/5pt77s4Vt9RGvveriqai7A.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/5pt77s4Vt9RGvveriqai7A.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0x72bd8dcf6b782e15cbbe06b1cee849d31b9b405d7c4ba2f7c303f183b23381a1","isrc":"QZNWX2269130","name":"end credits","registered_at":"2026-06-05T20:33:41Z","spotify_id":"5pt77s4Vt9RGvveriqai7A","type":"track"}

epilogue
type: MusicRecording
duration: PT3M59S
duration ms: 239858
explicit: false
by artist: Sarah Kang
in album: how i remember
  type: MusicAlbum
  date published: 2022-10-14
isrc code: QZNWY2219308
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-08T18:19:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a81f18166e8376143e150cb051350578c658465779916ab713e7430dc196c11
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/3LOolvy8SIuFenyCHjaMDW.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3LOolvy8SIuFenyCHjaMDW
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 0x7a81f18166e8376143e150cb051350578c658465779916ab713e7430dc196c11. 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/3LOolvy8SIuFenyCHjaMDW.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/3LOolvy8SIuFenyCHjaMDW.
  date published: 2026-06-13T15:41:10Z

Hopeless Romantic, Pt. 1
type: MusicAlbum
date published: 2023-07-07
track: Adventure with You
  type: MusicRecording
  duration: PT3M30S
  duration ms: 210400
  explicit: false
  by artist: Sarah Kang
  by artist: Cy Leo
  in album: Hopeless Romantic, Pt. 1
    type: MusicAlbum
    date published: 2023-07-07
  isrc code: QZMEQ2359558
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-06T16:35:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x061b13a7db4d867ea17f6c6bf4dc48c7971c4dae3cec4a943c16060f46da1e66
  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/7eEBjmN52u18OZUATiUGFD.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7eEBjmN52u18OZUATiUGFD
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x061b13a7db4d867ea17f6c6bf4dc48c7971c4dae3cec4a943c16060f46da1e66","isrc":"QZMEQ2359558","name":"Adventure with You","registered_at":"2026-06-06T16:35:16Z","spotify_id":"7eEBjmN52u18OZUATiUGFD","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 0x061b13a7db4d867ea17f6c6bf4dc48c7971c4dae3cec4a943c16060f46da1e66. 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/7eEBjmN52u18OZUATiUGFD.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/7eEBjmN52u18OZUATiUGFD.
    date published: 2026-06-13T13:32:09Z
    text: {"copyright_id":"0x061b13a7db4d867ea17f6c6bf4dc48c7971c4dae3cec4a943c16060f46da1e66","isrc":"QZMEQ2359558","name":"Adventure with You","registered_at":"2026-06-06T16:35:16Z","spotify_id":"7eEBjmN52u18OZUATiUGFD","type":"track"}
track: Corner Cafe
  type: MusicRecording
  duration: PT3M21S
  duration ms: 201106
  explicit: false
  by artist: Sarah Kang
  in album: Hopeless Romantic, Pt. 1
    type: MusicAlbum
    date published: 2023-07-07
  isrc code: QZK6G2326589
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-05T21:05:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x180c36b7b6fb8af7f9bed67274b66c407cdcdb8001e50398de7156096b9d5d0e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956304
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/4VfS3yRni1ZkMbKlgzxoSW.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4VfS3yRni1ZkMbKlgzxoSW
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x180c36b7b6fb8af7f9bed67274b66c407cdcdb8001e50398de7156096b9d5d0e","isrc":"QZK6G2326589","name":"Corner Cafe","registered_at":"2026-06-05T21:05:47Z","spotify_id":"4VfS3yRni1ZkMbKlgzxoSW","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 0x180c36b7b6fb8af7f9bed67274b66c407cdcdb8001e50398de7156096b9d5d0e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4VfS3yRni1ZkMbKlgzxoSW.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/4VfS3yRni1ZkMbKlgzxoSW.
    date published: 2026-07-02T03:55:08Z
    text: {"copyright_id":"0x180c36b7b6fb8af7f9bed67274b66c407cdcdb8001e50398de7156096b9d5d0e","isrc":"QZK6G2326589","name":"Corner Cafe","registered_at":"2026-06-05T21:05:47Z","spotify_id":"4VfS3yRni1ZkMbKlgzxoSW","type":"track"}
track: Hopeless Romantic
  type: MusicRecording
  duration: PT4M31S
  duration ms: 271573
  explicit: false
  by artist: Sarah Kang
  in album: Hopeless Romantic, Pt. 1
    type: MusicAlbum
    date published: 2023-07-07
  isrc code: QZHNB2390668
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-04T12:55:38+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5acb3d966af6c5446a8094eacd837f6e54e7272603ea4c1238c0d0d1b9a0e560
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956312
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956312
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/074uXfdLS4HhYuWVuW8oTt.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/074uXfdLS4HhYuWVuW8oTt
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T05:09:12Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x5acb3d966af6c5446a8094eacd837f6e54e7272603ea4c1238c0d0d1b9a0e560","isrc":"QZHNB2390668","name":"Hopeless Romantic","registered_at":"2026-06-04T12:55:38Z","spotify_id":"074uXfdLS4HhYuWVuW8oTt","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 0x5acb3d966af6c5446a8094eacd837f6e54e7272603ea4c1238c0d0d1b9a0e560. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/074uXfdLS4HhYuWVuW8oTt.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/074uXfdLS4HhYuWVuW8oTt.
    date published: 2026-07-02T05:09:12Z
    text: {"copyright_id":"0x5acb3d966af6c5446a8094eacd837f6e54e7272603ea4c1238c0d0d1b9a0e560","isrc":"QZHNB2390668","name":"Hopeless Romantic","registered_at":"2026-06-04T12:55:38Z","spotify_id":"074uXfdLS4HhYuWVuW8oTt","type":"track"}
track: We're All Gonna Die Anyway
  type: MusicRecording
  duration: PT3M9S
  duration ms: 189706
  explicit: false
  by artist: Sarah Kang
  by artist: Jackson Lundy
  in album: Hopeless Romantic, Pt. 1
    type: MusicAlbum
    date published: 2023-07-07
  isrc code: QZMEQ2359559
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-07T12:51:22+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1dd60a3e8488b7aa54a00478d8f2f073ba0a61f969a426618c82cc148aa539d6
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956304
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/3Gf1gIDGEjTSqtiTIzveSA.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3Gf1gIDGEjTSqtiTIzveSA
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x1dd60a3e8488b7aa54a00478d8f2f073ba0a61f969a426618c82cc148aa539d6","isrc":"QZMEQ2359559","name":"We're All Gonna Die Anyway","registered_at":"2026-06-07T12:51:22Z","spotify_id":"3Gf1gIDGEjTSqtiTIzveSA","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 0x1dd60a3e8488b7aa54a00478d8f2f073ba0a61f969a426618c82cc148aa539d6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3Gf1gIDGEjTSqtiTIzveSA.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/3Gf1gIDGEjTSqtiTIzveSA.
    date published: 2026-07-02T03:55:08Z
    text: {"copyright_id":"0x1dd60a3e8488b7aa54a00478d8f2f073ba0a61f969a426618c82cc148aa539d6","isrc":"QZMEQ2359559","name":"We're All Gonna Die Anyway","registered_at":"2026-06-07T12:51:22Z","spotify_id":"3Gf1gIDGEjTSqtiTIzveSA","type":"track"}
track: It's You I Like
  type: MusicRecording
  duration: PT2M58S
  duration ms: 178773
  explicit: false
  by artist: Sarah Kang
  by artist: Takahiro Izumikawa
  in album: Hopeless Romantic, Pt. 1
  isrc code: QZMEQ2359560
  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

Sarah Kang
type: MusicGroup

Takahiro Izumikawa
type: MusicGroup

Hopeless Romantic, Pt. 1
type: MusicAlbum
date published: 2023-07-07

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-06-06T09:31:55+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 954130

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block/954130

OTSRecordURL
type: PropertyValue
value: https://artists.proofprofile.net/proofs/track/7xcCQxCul3QdwmLBGpFzKa.json

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7xcCQxCul3QdwmLBGpFzKa

OTSTimestamp
type: PropertyValue
value: 2026-06-17T20:42:52Z

OTSCanonicalRecord
type: PropertyValue
value: {"copyright_id":"0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43","isrc":"QZMEQ2359560","name":"It's You I Like","registered_at":"2026-06-06T09:31:55Z","spotify_id":"7xcCQxCul3QdwmLBGpFzKa","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 0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:42:52Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7xcCQxCul3QdwmLBGpFzKa.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/7xcCQxCul3QdwmLBGpFzKa.
date published: 2026-06-17T20:42:52Z
text: {"copyright_id":"0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43","isrc":"QZMEQ2359560","name":"It's You I Like","registered_at":"2026-06-06T09:31:55Z","spotify_id":"7xcCQxCul3QdwmLBGpFzKa","type":"track"}

about time
type: MusicAlbum
date published: 2022-06-17
track: about time
  type: MusicRecording
  duration: PT3M13S
  duration ms: 193047
  explicit: false
  by artist: Sarah Kang
  by artist: Takahiro Izumikawa
  in album: about time
    type: MusicAlbum
    date published: 2022-06-17
  isrc code: QZK6P2294654
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-04T08:14:18+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfbf4cee115e721f21b4de6f3fe9b9e5059bc6a6da076b2518358e14e5c610ee4
  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/2khJckZKgm10rTK583uKuQ.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2khJckZKgm10rTK583uKuQ
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T15:41:10Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0xfbf4cee115e721f21b4de6f3fe9b9e5059bc6a6da076b2518358e14e5c610ee4","isrc":"QZK6P2294654","name":"about time","registered_at":"2026-06-04T08:14:18Z","spotify_id":"2khJckZKgm10rTK583uKuQ","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 0xfbf4cee115e721f21b4de6f3fe9b9e5059bc6a6da076b2518358e14e5c610ee4. 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/2khJckZKgm10rTK583uKuQ.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/2khJckZKgm10rTK583uKuQ.
    date published: 2026-06-13T15:41:10Z
    text: {"copyright_id":"0xfbf4cee115e721f21b4de6f3fe9b9e5059bc6a6da076b2518358e14e5c610ee4","isrc":"QZK6P2294654","name":"about time","registered_at":"2026-06-04T08:14:18Z","spotify_id":"2khJckZKgm10rTK583uKuQ","type":"track"}

Outage
type: MusicAlbum
date published: 2021-01-22
track: Outage
  type: MusicRecording
  duration: PT4M47S
  duration ms: 287324
  explicit: false
  by artist: Takahiro Izumikawa
  in album: Outage
    type: MusicAlbum
    date published: 2021-01-22
track: After The Rain
  type: MusicRecording
  duration: PT4M7S
  duration ms: 247784
  explicit: false
  by artist: Takahiro Izumikawa
  in album: Outage
    type: MusicAlbum
    date published: 2021-01-22
track: James Joint
  type: MusicRecording
  duration: PT3M54S
  duration ms: 234322
  explicit: false
  by artist: Takahiro Izumikawa
  in album: Outage
    type: MusicAlbum
    date published: 2021-01-22
  isrc code: JPZ922009538
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-27T18:02:58+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x04d0fdd27dc3dd0ca23b24197db443557f9f9fb328f2c963e7740cc96482c678
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956304
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/3kraMcHtfGfn7jcaC2acog.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3kraMcHtfGfn7jcaC2acog
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x04d0fdd27dc3dd0ca23b24197db443557f9f9fb328f2c963e7740cc96482c678","isrc":"JPZ922009538","name":"James Joint","registered_at":"2026-06-27T18:02:58Z","spotify_id":"3kraMcHtfGfn7jcaC2acog","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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    encoding format: application/vnd.opentimestamps.ots
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    date published: 2021-01-22
track: Profound Silence
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    date published: 2021-01-22
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track: Boogieman
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    date published: 2021-01-22
track: Amsterdam After Dark
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    date published: 2021-01-22
track: Wombat on The Street
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    date published: 2021-01-22
track: Higan
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track: Life Is Your Thoughts
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Life Is Your Thoughts
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date published: 2020-04-10
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    date published: 2020-04-10
track: No Satisfaction
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track: Life Is Your Thoughts
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    date published: 2020-04-10
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track: Higan
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  in album: Life Is Your Thoughts
    type: MusicAlbum
    date published: 2020-04-10
track: Trigger
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  by artist: Syl Dubenion
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    type: MusicAlbum
    date published: 2020-04-10
track: Shigan
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  by artist: Joe Blaxx
  by artist: Parker McAllister
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    type: MusicAlbum
    date published: 2020-04-10
track: Walk Alone
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    type: MusicAlbum
    date published: 2020-04-10
track: Moving Up
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  by artist: Bajah
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    type: MusicAlbum
    date published: 2020-04-10
track: Interlude
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  by artist: Parker McAllister
  by artist: Marshall York
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track: Close Again
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  by artist: Natalie Oliveri
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    date published: 2020-04-10
track: Who You'll Make Me Be
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  by artist: Maya Hatch
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Curtain Call
type: MusicAlbum
date published: 2024-07-26
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    type: MusicAlbum
    date published: 2024-07-26

Unaffected Spell
type: MusicAlbum
date published: 2024-03-29
track: Unaffected Spell
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    date published: 2024-03-29

My Wishes (Sped Up Version)
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date published: 2023-12-18
track: My Wishes - Sped Up Version
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  by artist: Takahiro Izumikawa
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My Wishes
type: MusicAlbum
date published: 2023-12-18
track: My Wishes
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  by artist: Takahiro Izumikawa
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あ (A) [Davie Napalm Remix]
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date published: 2023-07-29
track: あ (A) - Davie Napalm Remix
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  by artist: Davie Napalm
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流 (Ru)
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date published: 2023-05-13
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  by artist: Blaque Dynamite
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6d94b9cd9e784c4330deadf92026ce888bed71e666512431c0d75cd896f4f9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4jmvTczMgKA4MQkyMeH3D9.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/4jmvTczMgKA4MQkyMeH3D9.
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track: 会話 (Dialogue)
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track: 停電 (Outage)
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    date published: 2023-05-13
track: 万葉 (Manyou)
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  by artist: Maurice Brown
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    type: MusicAlbum
    date published: 2023-05-13
track: 静か (Hush)
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会話 (Dialogue)
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track: 会話 (Dialogue)
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あ(A)
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track: あ(A)
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    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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6d94b9cd9e784c4330deadf92026ce888bed71e666512431c0d75cd896f4f9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/17o9I84MQ9uUkTR3L3RbL9.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/17o9I84MQ9uUkTR3L3RbL9.
    date published: 2026-07-02T05:09:12Z
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万葉 (Manyou)
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b18ea96b4e670cf2022ce9af586b736b5282685fe82fca8f74c7e27b9ce084. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6l0CgdO1LfKNS1NTAUQppx.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/6l0CgdO1LfKNS1NTAUQppx.
    date published: 2026-07-02T03:55:08Z
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Nibitone
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date published: 2023-01-15
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Carry me away with you
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track: Carry me away with you
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  by artist: Bianca Love
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    date published: 2022-12-28

Tendan Blue
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Kizanka
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date published: 2021-11-19
track: Kizanka
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  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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Smiling
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We Need Love
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Hedron
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date published: 2021-09-10
track: Hedron
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    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-20T10:21:28+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7c4c3607065a74bff9a98f96e3dcd98bbd9e7c8504d2400948591aad7a223a29
  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/3nlC12p9pXJFo1rw47pUYJ.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3nlC12p9pXJFo1rw47pUYJ
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  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 0x7c4c3607065a74bff9a98f96e3dcd98bbd9e7c8504d2400948591aad7a223a29. 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/3nlC12p9pXJFo1rw47pUYJ.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/3nlC12p9pXJFo1rw47pUYJ.
    date published: 2026-07-02T03:30:09Z

Nostargeology
type: MusicAlbum
date published: 2021-07-23
track: Nostargeology
  type: MusicRecording
  duration: PT3M21S
  duration ms: 201600
  explicit: false
  by artist: Takahiro Izumikawa
  by artist: Hedge Hop
  by artist: Captain Earwax
  in album: Nostargeology
    type: MusicAlbum
    date published: 2021-07-23

Lost Home
type: MusicAlbum
date published: 2021-06-25
track: Lost Home
  type: MusicRecording
  duration: PT3M11S
  duration ms: 191590
  explicit: false
  by artist: Takahiro Izumikawa
  by artist: Hedge Hop
  by artist: Daru Jones
  in album: Lost Home
    type: MusicAlbum
    date published: 2021-06-25

Down Stream
type: MusicAlbum
date published: 2021-05-21
track: Down Stream
  type: MusicRecording
  duration: PT2M41S
  duration ms: 161684
  explicit: false
  by artist: Takahiro Izumikawa
  by artist: Hedge Hop
  by artist: paalsh
  in album: Down Stream
    type: MusicAlbum
    date published: 2021-05-21

Find Your Ore
type: MusicAlbum
date published: 2021-04-23
track: Find Your Ore
  type: MusicRecording
  duration: PT3M20S
  duration ms: 200250
  explicit: false
  by artist: Takahiro Izumikawa
  by artist: Hedge Hop
  by artist: Silent Titan
  in album: Find Your Ore
    type: MusicAlbum
    date published: 2021-04-23

The Truth
type: MusicAlbum
date published: 2021-03-19
track: The Truth
  type: MusicRecording
  duration: PT3M7S
  duration ms: 187455
  explicit: false
  by artist: Takahiro Izumikawa
  by artist: Hedge Hop
  by artist: Karen Marie
  by artist: Marshall York
  in album: The Truth
    type: MusicAlbum
    date published: 2021-03-19

Horizons
type: MusicAlbum
date published: 2021-02-19
track: Horizons
  type: MusicRecording
  duration: PT2M55S
  duration ms: 175301
  explicit: false
  by artist: Takahiro Izumikawa
  by artist: Hedge Hop
  by artist: Daru Jones
  in album: Horizons
    type: MusicAlbum
    date published: 2021-02-19

After The Frost
type: MusicAlbum
date published: 2021-01-22
track: After The Frost
  type: MusicRecording
  duration: PT2M28S
  duration ms: 148888
  explicit: false
  by artist: Takahiro Izumikawa
  by artist: Hedge Hop
  by artist: JONES Jnr.
  in album: After The Frost
    type: MusicAlbum
    date published: 2021-01-22

Star Rail HoYoFair Music Selection #2 "S.P.A.R.K.L.E"
type: MusicAlbum
date published: 2024-07-06
track: Kaleido: intro
  type: MusicRecording
  duration: PT1M44S
  duration ms: 104231
  explicit: false
  by artist: HoYoFair
  by artist: SiGNAL-E
  in album: Star Rail HoYoFair Music Selection #2 "S.P.A.R.K.L.E"
    type: MusicAlbum
    date published: 2024-07-06
  isrc code: QZNWY2474104
track: Flaviation - Original: "Star Rail"
  type: MusicRecording
  duration: PT5M4S
  duration ms: 304258
  explicit: false
  by artist: HoYoFair
  by artist: H ZETTRIO
  in album: Star Rail HoYoFair Music Selection #2 "S.P.A.R.K.L.E"
    type: MusicAlbum
    date published: 2024-07-06
  isrc code: QZNWY2474105
track: Iris Cosmopolitan - Original: "This Side of Paradise"
  type: MusicRecording
  duration: PT5M7S
  duration ms: 307460
  explicit: false
  by artist: HoYoFair
  by artist: 1st Dimension
  by artist: Marco Xu
  in album: Star Rail HoYoFair Music Selection #2 "S.P.A.R.K.L.E"
    type: MusicAlbum
    date published: 2024-07-06
  isrc code: QZNWY2474106
track: Risky Sour - Original: "WHITE NIGHT"
  type: MusicRecording
  duration: PT5M16S
  duration ms: 316213
  explicit: false
  by artist: HoYoFair
  by artist: Ohashi Trio
  by artist: Takumadrops
  in album: Star Rail HoYoFair Music Selection #2 "S.P.A.R.K.L.E"
    type: MusicAlbum
    date published: 2024-07-06
  isrc code: QZNWY2474107
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-20T23:34:33+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x318717cfd0ea145281efb878d9f69d9269d9ae3d734bd80a61364b2d52b243af
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block/956302
  additional property: OTSRecordURL
    type: PropertyValue
    value: https://artists.proofprofile.net/proofs/track/1KJP8lK3c3IUJZ6FFks2Xa.json
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1KJP8lK3c3IUJZ6FFks2Xa
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  additional property: OTSCanonicalRecord
    type: PropertyValue
    value: {"copyright_id":"0x318717cfd0ea145281efb878d9f69d9269d9ae3d734bd80a61364b2d52b243af","isrc":"QZNWY2474107","name":"Risky Sour - Original: \"WHITE NIGHT\"","registered_at":"2026-06-20T23:34:33Z","spotify_id":"1KJP8lK3c3IUJZ6FFks2Xa","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 0x318717cfd0ea145281efb878d9f69d9269d9ae3d734bd80a61364b2d52b243af. 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/1KJP8lK3c3IUJZ6FFks2Xa.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/1KJP8lK3c3IUJZ6FFks2Xa.
    date published: 2026-07-02T03:30:09Z
    text: {"copyright_id":"0x318717cfd0ea145281efb878d9f69d9269d9ae3d734bd80a61364b2d52b243af","isrc":"QZNWY2474107","name":"Risky Sour - Original: \"WHITE NIGHT\"","registered_at":"2026-06-20T23:34:33Z","spotify_id":"1KJP8lK3c3IUJZ6FFks2Xa","type":"track"}
track: Baal Royale - Original: "Monodrama"
  type: MusicRecording
  duration: PT5M18S
  duration ms: 318975
  explicit: false
  by artist: HoYoFair
  by artist: The Bags Groove
  by artist: Takahiro Izumikawa
  in album: Star Rail HoYoFair Music Selection #2 "S.P.A.R.K.L.E"
    type: MusicAlbum
    date published: 2024-07-06
  isrc code: QZNWY2474108
track: White Gentleman - Original: "This Side of Paradise"
  type: MusicRecording
  duration: PT4M28S
  duration ms: 268714
  explicit: false
  by artist: HoYoFair
  by artist: Wilson Chen Jazz Big Band
  by artist: Wilson Chen
  by artist: inosoo
  in album: Star Rail HoYoFair Music Selection #2 "S.P.A.R.K.L.E"
    type: MusicAlbum
    date published: 2024-07-06
  isrc code: QZNWY2474109
track: Sparky Whisky - Original: "Monodrama"
  type: MusicRecording
  duration: PT5M29S
  duration ms: 329454
  explicit: false
  by artist: HoYoFair
  by artist: Hugo
  in album: Star Rail HoYoFair Music Selection #2 "S.P.A.R.K.L.E"
    type: MusicAlbum
    date published: 2024-07-06
  isrc code: QZNWY2474110
track: Always live on the Soulglad Side - Original: "Hi, Dolly!"
  type: MusicRecording
  duration: PT5M28S
  duration ms: 328975
  explicit: false
  by artist: HoYoFair
  by artist: Lawrence Ku
  in album: Star Rail HoYoFair Music Selection #2 "S.P.A.R.K.L.E"
    type: MusicAlbum
    date published: 2024-07-06
  isrc code: QZNWY2474111

Time (Reprise)
type: MusicAlbum
date published: 2023-09-05
track: Time - Reprise
  type: MusicRecording
  duration: PT3M15S
  duration ms: 195604
  explicit: false
  by artist: Bianca Love
  by artist: Marcus Gilmore
  by artist: Maurice Brown
  by artist: Ben Williams
  by artist: Takahiro Izumikawa
  in album: Time (Reprise)
    type: MusicAlbum
    date published: 2023-09-05
  isrc code: QZNWU2309970

Ready For Love
type: MusicAlbum
date published: 2022-10-28
track: Ready For Love
  type: MusicRecording
  duration: PT5M39S
  duration ms: 339931
  explicit: false
  by artist: Jenny Hong
  by artist: Takahiro Izumikawa
  in album: Ready For Love
    type: MusicAlbum
    date published: 2022-10-28

Time
type: MusicAlbum
date published: 2021-10-14
track: Time
  type: MusicRecording
  duration: PT4M0S
  duration ms: 240001
  explicit: false
  by artist: Bianca Love
  by artist: Maurice Brown
  by artist: Ben Williams
  by artist: Joe Blaxx
  by artist: Takahiro Izumikawa
  in album: Time
    type: MusicAlbum
    date published: 2021-10-14

It's You I Like
type: MusicRecording
duration: PT2M58S
duration ms: 178773
explicit: false
by artist: Sarah Kang
by artist: Takahiro Izumikawa
in album: Hopeless Romantic
  type: MusicAlbum
  date published: 2023-10-06
isrc code: QZMEQ2359560
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-06T09:31:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43
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/2WhVg68MpNyB63VWG7NaRG.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2WhVg68MpNyB63VWG7NaRG
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43","isrc":"QZMEQ2359560","name":"It's You I Like","registered_at":"2026-06-06T09:31:55Z","spotify_id":"2WhVg68MpNyB63VWG7NaRG","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 0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43. 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/2WhVg68MpNyB63VWG7NaRG.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/2WhVg68MpNyB63VWG7NaRG.
  date published: 2026-06-13T15:41:10Z
  text: {"copyright_id":"0x18a782119463fabd7c32bb6ebaa7f6ae718deb388281f712d1df4e64b57a3a43","isrc":"QZMEQ2359560","name":"It's You I Like","registered_at":"2026-06-06T09:31:55Z","spotify_id":"2WhVg68MpNyB63VWG7NaRG","type":"track"}

万葉 (Manyou)
type: MusicRecording
duration: PT4M9S
duration ms: 249996
explicit: false
by artist: Takahiro Izumikawa
by artist: Maurice Brown
in album: 万葉 (Manyou)
  type: MusicAlbum
  date published: 2023-01-26
isrc code: QZFYX2303860
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T18:04:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe4b18ea96b4e670cf2022ce9af586b736b5282685fe82fca8f74c7e27b9ce084
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/956304
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/6l0CgdO1LfKNS1NTAUQppx.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6l0CgdO1LfKNS1NTAUQppx
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe4b18ea96b4e670cf2022ce9af586b736b5282685fe82fca8f74c7e27b9ce084","isrc":"QZFYX2303860","name":"万葉 (Manyou)","registered_at":"2026-06-27T18:04:56Z","spotify_id":"6l0CgdO1LfKNS1NTAUQppx","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 0xe4b18ea96b4e670cf2022ce9af586b736b5282685fe82fca8f74c7e27b9ce084. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6l0CgdO1LfKNS1NTAUQppx.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/6l0CgdO1LfKNS1NTAUQppx.
  date published: 2026-07-02T03:55:08Z
  text: {"copyright_id":"0xe4b18ea96b4e670cf2022ce9af586b736b5282685fe82fca8f74c7e27b9ce084","isrc":"QZFYX2303860","name":"万葉 (Manyou)","registered_at":"2026-06-27T18:04:56Z","spotify_id":"6l0CgdO1LfKNS1NTAUQppx","type":"track"}

あ (A)
type: MusicRecording
duration: PT4M54S
duration ms: 294594
explicit: false
by artist: Takahiro Izumikawa
by artist: Blaque Dynamite
in album: 流 (Ru)
  type: MusicAlbum
  date published: 2023-05-13
isrc code: QZES52305793
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T23:03:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfb6d94b9cd9e784c4330deadf92026ce888bed71e666512431c0d75cd896f4f9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block/957124
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/track/4jmvTczMgKA4MQkyMeH3D9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4jmvTczMgKA4MQkyMeH3D9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfb6d94b9cd9e784c4330deadf92026ce888bed71e666512431c0d75cd896f4f9","isrc":"QZES52305793","name":"あ (A)","registered_at":"2026-06-24T23:03:16Z","spotify_id":"4jmvTczMgKA4MQkyMeH3D9","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 0xfb6d94b9cd9e784c4330deadf92026ce888bed71e666512431c0d75cd896f4f9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4jmvTczMgKA4MQkyMeH3D9.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/4jmvTczMgKA4MQkyMeH3D9.
  date published: 2026-07-08T03:53:27Z
  text: {"copyright_id":"0xfb6d94b9cd9e784c4330deadf92026ce888bed71e666512431c0d75cd896f4f9","isrc":"QZES52305793","name":"あ (A)","registered_at":"2026-06-24T23:03:16Z","spotify_id":"4jmvTczMgKA4MQkyMeH3D9","type":"track"}

Life Is Your Thoughts
type: MusicRecording
duration: PT3M50S
duration ms: 230602
explicit: false
by artist: Takahiro Izumikawa
by artist: Jermaine Holmes
in album: Life Is Your Thoughts
  type: MusicAlbum
  date published: 2020-04-10
isrc code: US8JA2023003

Curtain Call
type: MusicRecording
duration: PT5M50S
duration ms: 350853
explicit: false
by artist: Takahiro Izumikawa
in album: Curtain Call
  type: MusicAlbum
  date published: 2024-07-26

水木 (Mizuki)
type: MusicRecording
duration: PT4M37S
duration ms: 277626
explicit: false
by artist: Takahiro Izumikawa
by artist: Blaque Dynamite
by artist: Cy Leo
in album: 流 (Ru)
  type: MusicAlbum
  date published: 2023-05-13
isrc code: QZK6N2300340

My Wishes
type: MusicRecording
duration: PT3M49S
duration ms: 229367
explicit: false
by artist: Jenny Hong
by artist: Takahiro Izumikawa
in album: My Wishes
  type: MusicAlbum
  date published: 2023-12-18

あ (A) - Davie Napalm Remix
type: MusicRecording
duration: PT4M34S
duration ms: 274791
explicit: false
by artist: Takahiro Izumikawa
by artist: Davie Napalm
in album: あ (A) [Davie Napalm Remix]
  type: MusicAlbum
  date published: 2023-07-29

会話 (Dialogue)
type: MusicRecording
duration: PT4M31S
duration ms: 271739
explicit: false
by artist: Takahiro Izumikawa
in album: 流 (Ru)
  type: MusicAlbum
  date published: 2023-05-13

停電 (Outage)
type: MusicRecording
duration: PT4M54S
duration ms: 294269
explicit: false
by artist: Takahiro Izumikawa
in album: 流 (Ru)
  type: MusicAlbum
  date published: 2023-05-13

万葉 (Manyou)
type: MusicRecording
duration: PT4M9S
duration ms: 249996
explicit: false
by artist: Takahiro Izumikawa
by artist: Maurice Brown
in album: 流 (Ru)
  type: MusicAlbum
  date published: 2023-05-13

静か (Hush)
type: MusicRecording
duration: PT3M55S
duration ms: 235344
explicit: false
by artist: Takahiro Izumikawa
in album: 流 (Ru)
  type: MusicAlbum
  date published: 2023-05-13

Ready For Love
type: MusicRecording
duration: PT5M39S
duration ms: 339931
explicit: false
by artist: Jenny Hong
by artist: Takahiro Izumikawa
in album: Ready For Love
  type: MusicAlbum
  date published: 2022-10-28

Time
type: MusicRecording
duration: PT4M0S
duration ms: 240001
explicit: false
by artist: Bianca Love
by artist: Maurice Brown
by artist: Ben Williams
by artist: Joe Blaxx
by artist: Takahiro Izumikawa
in album: Time
  type: MusicAlbum
  date published: 2021-10-14

Introduction
type: MusicRecording
duration: PT0M48S
duration ms: 48455
explicit: false
by artist: Takahiro Izumikawa
in album: Life Is Your Thoughts
  type: MusicAlbum
  date published: 2020-04-10

No Satisfaction
type: MusicRecording
duration: PT2M16S
duration ms: 136835
explicit: false
by artist: Takahiro Izumikawa
in album: Life Is Your Thoughts
  type: MusicAlbum
  date published: 2020-04-10

Higan
type: MusicRecording
duration: PT4M42S
duration ms: 282013
explicit: false
by artist: Takahiro Izumikawa
in album: Life Is Your Thoughts
  type: MusicAlbum
  date published: 2020-04-10

Trigger
type: MusicRecording
duration: PT5M23S
duration ms: 323904
explicit: false
by artist: Takahiro Izumikawa
by artist: Syl Dubenion
in album: Life Is Your Thoughts
  type: MusicAlbum
  date published: 2020-04-10

Shigan
type: MusicRecording
duration: PT4M22S
duration ms: 262264
explicit: false
by artist: Takahiro Izumikawa
by artist: Joe Blaxx
by artist: Parker McAllister
in album: Life Is Your Thoughts
  type: MusicAlbum
  date published: 2020-04-10

Walk Alone
type: MusicRecording
duration: PT5M58S
duration ms: 358233
explicit: false
by artist: Takahiro Izumikawa
in album: Life Is Your Thoughts
  type: MusicAlbum
  date published: 2020-04-10