Cathryn Archer
type: MusicGroup
popularity: 5
followers: 45
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x20f305d7c0ee1d4f034cebd175ebe33d05153b2d8a3694a007c1f92c60659821
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f3d72eb3-e69b-4b26-9574-43becbdd504c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f3d72eb3-e69b-4b26-9574-43becbdd504c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f3d72eb3-e69b-4b26-9574-43becbdd504c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x20f305d7c0ee1d4f034cebd175ebe33d05153b2d8a3694a007c1f92c60659821","name":"Cathryn Archer","registered_at":"2026-06-21T14:30:36Z","symbol":"NIM1943360","token_address":"0xa42478c06e8d219357ee787c16d6ce6155630cb7","type":"artist","uuid":"f3d72eb3-e69b-4b26-9574-43becbdd504c"}
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 0x20f305d7c0ee1d4f034cebd175ebe33d05153b2d8a3694a007c1f92c60659821. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3d72eb3-e69b-4b26-9574-43becbdd504c.json and https://artists.proofprofile.net/proofs/artist/f3d72eb3-e69b-4b26-9574-43becbdd504c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x20f305d7c0ee1d4f034cebd175ebe33d05153b2d8a3694a007c1f92c60659821","name":"Cathryn Archer","registered_at":"2026-06-21T14:30:36Z","symbol":"NIM1943360","token_address":"0xa42478c06e8d219357ee787c16d6ce6155630cb7","type":"artist","uuid":"f3d72eb3-e69b-4b26-9574-43becbdd504c"}
album: In Every Age
  type: MusicAlbum
  date published: 2020-02-01
album: Canticle of the Turning
  type: MusicAlbum
  date published: 2020-02-01
album: He Shall Reign Forevermore
  type: MusicAlbum
  date published: 2020-02-01
album: Dust and Ashes
  type: MusicAlbum
  date published: 2020-02-26
album: Out of Ashes
  type: MusicAlbum
  date published: 2021-03-28
  track: Eye Has Not Seen
    type: MusicRecording
    duration: PT4M44S
    duration ms: 284119
    explicit: false
    by artist: Cathryn Archer
    in album: Out of Ashes
      type: MusicAlbum
      date published: 2021-03-28
    isrc code: QZKGP2100012
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T17:53:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7b8cab464aff24bd5bc56565cf1c5f7deec5876b34c817f851f4a24fd953d99c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZKGP2100012
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0x7b8cab464aff24bd5bc56565cf1c5f7deec5876b34c817f851f4a24fd953d99c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZKGP2100012.
      date published: 2026-07-05T01:12:41Z
    audio: Eye Has Not Seen
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 175.513
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.307
      additional property: Energy
        type: PropertyValue
        value: 0.067
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.979
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.446
      additional property: Loudness (dB)
        type: PropertyValue
        value: -16.784
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major