Obsidienne Vocal Ensemble
type: MusicGroup
genre: medieval
popularity: 2
followers: 62
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe5705ffed5f2557623dba213c700b7e50f0ac88b3718030f4fa28ac08496f438
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953892
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953892
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ec35690-ccf1-4b2f-998a-d3ffd39edda9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ec35690-ccf1-4b2f-998a-d3ffd39edda9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0ec35690-ccf1-4b2f-998a-d3ffd39edda9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T05:01:46Z
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 → 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5705ffed5f2557623dba213c700b7e50f0ac88b3718030f4fa28ac08496f438. Chain 2 (Bitcoin): anchored in block 953892 (2026-06-16T05:01:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ec35690-ccf1-4b2f-998a-d3ffd39edda9.json and https://artists.proofprofile.net/proofs/artist/0ec35690-ccf1-4b2f-998a-d3ffd39edda9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T05:01:46Z
  text: {"copyright_id":"0xe5705ffed5f2557623dba213c700b7e50f0ac88b3718030f4fa28ac08496f438","name":"Obsidienne Vocal Ensemble","registered_at":"2026-06-15T18:33:00Z","symbol":"NIM0795364","token_address":"0x2d156ac2dc1c94c297798dd90619ed233690b3fc","type":"artist","uuid":"0ec35690-ccf1-4b2f-998a-d3ffd39edda9"}
album: Machaut: Messe Nostre Dame - Motets et estampies du XIVe siècle
  type: MusicAlbum
  date published: 2011-04-01
album: Machaut: Messe Nostre Dame - Motets et estampies du XIVe siècle
  type: MusicAlbum
  date published: 2011-04-01
track: O mors inevitabili
  type: MusicRecording
  duration: PT2M44S
  duration ms: 164133
  explicit: false
  by artist: Jheronimus Vinders
  by artist: Obsidienne Vocal Ensemble
  by artist: Emmanuel Bonnardot
  in album: Josquin Desprez: Missa 'L'homme armé sexti toni'
    type: MusicAlbum
    date published: 2011-04-01
  isrc code: DEOM61100310
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
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    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfb14e030f0b15c1510b776bfb992350aad63918ed594941f0523de92ce9498e9
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  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960108
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960108
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEOM61100310
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T13:09:35Z
  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 0xfb14e030f0b15c1510b776bfb992350aad63918ed594941f0523de92ce9498e9. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEOM61100310.
    date published: 2026-07-29T13:09:35Z
  audio: O mors inevitabili
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 112.047
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
      value: 0.184
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.988
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.003
    additional property: Liveness
      type: PropertyValue
      value: 0.118
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.06
    additional property: Loudness (dB)
      type: PropertyValue
      value: -22.004
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major