John C. Cale and Nico Nico
type: MusicGroup
popularity: 23
followers: 2096
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfa4a9118b92b48094e9d7d381406bd84aa585a45c416d2779423dc2f47f87257
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e5342c50-32fb-4b59-80b8-a8bccce6012b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e5342c50-32fb-4b59-80b8-a8bccce6012b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e5342c50-32fb-4b59-80b8-a8bccce6012b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfa4a9118b92b48094e9d7d381406bd84aa585a45c416d2779423dc2f47f87257","name":"John C. Cale and Nico Nico","registered_at":"2026-06-12T12:16:59Z","symbol":"NIM0295247","token_address":"0x0db0d5d633ce2a1e635c966756de3a9892a1a07f","type":"artist","uuid":"e5342c50-32fb-4b59-80b8-a8bccce6012b"}
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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xfa4a9118b92b48094e9d7d381406bd84aa585a45c416d2779423dc2f47f87257. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5342c50-32fb-4b59-80b8-a8bccce6012b.json and https://artists.proofprofile.net/proofs/artist/e5342c50-32fb-4b59-80b8-a8bccce6012b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0xfa4a9118b92b48094e9d7d381406bd84aa585a45c416d2779423dc2f47f87257","name":"John C. Cale and Nico Nico","registered_at":"2026-06-12T12:16:59Z","symbol":"NIM0295247","token_address":"0x0db0d5d633ce2a1e635c966756de3a9892a1a07f","type":"artist","uuid":"e5342c50-32fb-4b59-80b8-a8bccce6012b"}
album: Rockin' In The Free World
  type: MusicAlbum
  date published: 2016-01-04
  track: After The Goldrush
    type: MusicRecording
    duration: PT4M25S
    duration ms: 265400
    explicit: false
    by artist: John C. Cale and Nico Nico
    in album: Rockin' In The Free World
      type: MusicAlbum
      date published: 2016-01-04
    isrc code: UK6821411925
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T00:46:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1961f6824803c0205b1b506d0b20a2042259e6f502a298e377b86b3fe9c15cc2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958342
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958342
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411925
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T03:48:00Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1961f6824803c0205b1b506d0b20a2042259e6f502a298e377b86b3fe9c15cc2. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411925.
      date published: 2026-07-17T03:48:00Z
    audio: After The Goldrush
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 91.987
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.611
      additional property: Energy
        type: PropertyValue
        value: 0.44
      additional property: Speechiness
        type: PropertyValue
        value: 0.025
      additional property: Acousticness
        type: PropertyValue
        value: 0.197
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.155
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.331
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.261
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Like A Hurricane
    type: MusicRecording
    duration: PT3M18S
    duration ms: 198920
    explicit: false
    by artist: John C. Cale and Nico Nico
    in album: Rockin' In The Free World
      type: MusicAlbum
      date published: 2016-01-04
    isrc code: UK6821411926
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T13:04:50+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x42d5d6061d7d802ae2bcb410536471cd97bba91a760e8a8dfae0791cf3a84fc9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958157
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958157
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411926
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T16:04:30Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d5d6061d7d802ae2bcb410536471cd97bba91a760e8a8dfae0791cf3a84fc9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:04:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411926.
      date published: 2026-07-15T16:04:30Z
    audio: Like A Hurricane
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.196
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.592
      additional property: Energy
        type: PropertyValue
        value: 0.49
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.009
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.113
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.415
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.064
      additional property: Key Name
      additional property: Mode Name
  track: Old Man
  track: Southern Man
  track: The Needle and The Damage
  track: Only Love Can Break Your Heart
  track: Cortez The Killer

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor

Old Man
type: MusicRecording
duration: PT3M31S
duration ms: 211040
explicit: false
by artist: John C. Cale and Nico Nico
in album: Rockin' In The Free World
  type: MusicAlbum
  date published: 2016-01-04
isrc code: UK6821411928
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-15T22:25:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x419fe3219b99b458c8c29fe05f09cd691cbccc2ab9d239a995bdf87099c933a6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958212
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958212
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411928
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-15T23:25:50Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419fe3219b99b458c8c29fe05f09cd691cbccc2ab9d239a995bdf87099c933a6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411928.
  date published: 2026-07-15T23:25:50Z
audio: Old Man
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.917
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.48
  additional property: Energy
    type: PropertyValue
    value: 0.471
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.003
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.094
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.311
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.279
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Southern Man
type: MusicRecording
duration: PT3M32S
duration ms: 212946
explicit: false
by artist: John C. Cale and Nico Nico
in album: Rockin' In The Free World
  type: MusicAlbum
  date published: 2016-01-04
isrc code: UK6821411929
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-03T08:14:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc4099cc4af691c49694a7f0cdda97da4337975ba1e5a629fb6ee933ebbf6f541
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956476
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956476
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411929
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-03T09:04:44Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4099cc4af691c49694a7f0cdda97da4337975ba1e5a629fb6ee933ebbf6f541. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411929.
  date published: 2026-07-03T09:04:44Z
audio: Southern Man
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 179.819
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.356
  additional property: Energy
    type: PropertyValue
    value: 0.6
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.152
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.495
  additional property: Loudness (dB)
    type: PropertyValue
    value: -5.947
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

The Needle and The Damage
type: MusicRecording
duration: PT2M32S
duration ms: 152786
explicit: false
by artist: John C. Cale and Nico Nico
in album: Rockin' In The Free World
  type: MusicAlbum
  date published: 2016-01-04
isrc code: UK6821411931
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T10:23:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x26a92d40f51f074d76498c85eb44c8af9f42718467473105189afa0f465f15a6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958444
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958444
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411931
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T19:12:23Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a92d40f51f074d76498c85eb44c8af9f42718467473105189afa0f465f15a6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411931.
  date published: 2026-07-17T19:12:23Z
audio: The Needle and The Damage
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.928
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.636
  additional property: Energy
    type: PropertyValue
    value: 0.445
  additional property: Speechiness
    type: PropertyValue
    value: 0.031
  additional property: Acousticness
    type: PropertyValue
    value: 0.678
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.083
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.777
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Only Love Can Break Your Heart
type: MusicRecording
duration: PT3M15S
duration ms: 195440
explicit: false
by artist: John C. Cale and Nico Nico
in album: Rockin' In The Free World
  type: MusicAlbum
  date published: 2016-01-04
isrc code: UK6821411933
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T08:15:12+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa43b3792c04542541d46a2839dfda143945e349557ed8dfa0221cedc24a3da79
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958703
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958703
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411933
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T08:36:12Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43b3792c04542541d46a2839dfda143945e349557ed8dfa0221cedc24a3da79. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411933.
  date published: 2026-07-19T08:36:12Z
audio: Only Love Can Break Your Heart
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.139
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 3
  additional property: Danceability
    type: PropertyValue
    value: 0.592
  additional property: Energy
    type: PropertyValue
    value: 0.16
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.721
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.107
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.432
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.966
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Cortez The Killer
type: MusicRecording
duration: PT5M58S
duration ms: 358293
explicit: false
by artist: John C. Cale and Nico Nico
in album: Rockin' In The Free World
  type: MusicAlbum
  date published: 2016-01-04
isrc code: UK6821411934
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-15T13:51:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa04e9ea43ee3b1ca320e9bfd1237b4f9c3f51dea6bb07b389a9bafaec1a80d17
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958166
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958166
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411934
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-15T16:52:40Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04e9ea43ee3b1ca320e9bfd1237b4f9c3f51dea6bb07b389a9bafaec1a80d17. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UK6821411934.
  date published: 2026-07-15T16:52:40Z
audio: Cortez The Killer
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.146
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.55
  additional property: Energy
    type: PropertyValue
    value: 0.579
  additional property: Speechiness
    type: PropertyValue
    value: 0.029
  additional property: Acousticness
    type: PropertyValue
    value: 0.001
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.104
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.485
  additional property: Loudness (dB)
    type: PropertyValue
    value: -5.745
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor