Catrin Castell
type: MusicGroup
popularity: 4
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe3bd850b5bc067986b91d9d9e68ac3d15986aabffaec406db5b2858c12960351
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dfaa156a-4346-44d4-9a51-404eaa4119ed.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dfaa156a-4346-44d4-9a51-404eaa4119ed.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dfaa156a-4346-44d4-9a51-404eaa4119ed
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe3bd850b5bc067986b91d9d9e68ac3d15986aabffaec406db5b2858c12960351","name":"Catrin Castell","registered_at":"2026-06-21T06:08:55Z","symbol":"NIM1843702","token_address":"0xf68d5122cb2f6115fba2e9d558ee8a09564ca775","type":"artist","uuid":"dfaa156a-4346-44d4-9a51-404eaa4119ed"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bd850b5bc067986b91d9d9e68ac3d15986aabffaec406db5b2858c12960351. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfaa156a-4346-44d4-9a51-404eaa4119ed.json and https://artists.proofprofile.net/proofs/artist/dfaa156a-4346-44d4-9a51-404eaa4119ed.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xe3bd850b5bc067986b91d9d9e68ac3d15986aabffaec406db5b2858c12960351","name":"Catrin Castell","registered_at":"2026-06-21T06:08:55Z","symbol":"NIM1843702","token_address":"0xf68d5122cb2f6115fba2e9d558ee8a09564ca775","type":"artist","uuid":"dfaa156a-4346-44d4-9a51-404eaa4119ed"}
album: Brahms Lullaby on Hangdrum
  type: MusicAlbum
  date published: 2022-09-17
  track: Brahms Lullaby on Hangdrum
    type: MusicRecording
    duration: PT4M49S
    duration ms: 289903
    explicit: false
    by artist: Catrin Castell
    in album: Brahms Lullaby on Hangdrum
      type: MusicAlbum
      date published: 2022-09-17
    isrc code: PL16I2200073
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T04:45:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa80fbb60f1322be35b5b719491760a05ef9714022da0094085bdb1e291fff8ff
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958242
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958242
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL16I2200073
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T05:02:52Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80fbb60f1322be35b5b719491760a05ef9714022da0094085bdb1e291fff8ff. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL16I2200073 — a six-check JSON result.
      date published: 2026-07-16T05:02:52Z
    audio: Brahms Lullaby on Hangdrum
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 76.41
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.491
      additional property: Energy
        type: PropertyValue
        value: 0.086
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.96
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.871
      additional property: Liveness
        type: PropertyValue
        value: 0.077
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.498
      additional property: Loudness (dB)
        type: PropertyValue
        value: -25.689
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sting - Shape of My Heart - Relaxing Hangdrum Cover by Catrin Castell
  type: MusicAlbum
  date published: 2024-03-06