The Sardine Boys
type: MusicGroup
popularity: 2
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9c0910841b7d43bc70fec4bb1ee60fb0bb0ca81ea402f241f6f4917fd499a88e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954063
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954063
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/469426f1-45ff-4f0f-9051-da6f06486fe5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/469426f1-45ff-4f0f-9051-da6f06486fe5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/469426f1-45ff-4f0f-9051-da6f06486fe5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T07:49:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9c0910841b7d43bc70fec4bb1ee60fb0bb0ca81ea402f241f6f4917fd499a88e","name":"The Sardine Boys","registered_at":"2026-06-16T14:08:44Z","symbol":"NIM1075992","token_address":"0xa64db3bfb1326db1ae96c194739839c96fc77cd1","type":"artist","uuid":"469426f1-45ff-4f0f-9051-da6f06486fe5"}
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 0x9c0910841b7d43bc70fec4bb1ee60fb0bb0ca81ea402f241f6f4917fd499a88e. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/469426f1-45ff-4f0f-9051-da6f06486fe5.json and https://artists.proofprofile.net/proofs/artist/469426f1-45ff-4f0f-9051-da6f06486fe5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x9c0910841b7d43bc70fec4bb1ee60fb0bb0ca81ea402f241f6f4917fd499a88e","name":"The Sardine Boys","registered_at":"2026-06-16T14:08:44Z","symbol":"NIM1075992","token_address":"0xa64db3bfb1326db1ae96c194739839c96fc77cd1","type":"artist","uuid":"469426f1-45ff-4f0f-9051-da6f06486fe5"}
album: Cat Napper
  type: MusicAlbum
  date published: 2025-05-16
  track: Cat Napper
    type: MusicRecording
    duration: PT1M2S
    duration ms: 62742
    explicit: false
    by artist: The Sardine Boys
    in album: Cat Napper
      type: MusicAlbum
      date published: 2025-05-16
    isrc code: QZNWW2546773
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T06:03:54+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7c86f7d6ec30a6264270a842d65eeb52d2ff3a91d2fc55ceed90bb8fc7ef9fd4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2546773
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x7c86f7d6ec30a6264270a842d65eeb52d2ff3a91d2fc55ceed90bb8fc7ef9fd4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWW2546773.
      date published: 2026-07-05T10:01:46Z
    audio: Cat Napper
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 175.099
      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: 0.48
      additional property: Energy
        type: PropertyValue
        value: 0.926
      additional property: Speechiness
        type: PropertyValue
        value: 0.147
      additional property: Acousticness
        type: PropertyValue
        value: 0.118
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.299
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.92
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.699
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major