Cosma Joy
type: MusicGroup
genre: smooth jazz
popularity: 24
followers: 3102
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x66e34a3da87a6eceb65976241e7d8139beac97d83d4df1fea8ec4e26cd4837f8
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/7d571096-386a-4503-a823-8a60e4ec975f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7d571096-386a-4503-a823-8a60e4ec975f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7d571096-386a-4503-a823-8a60e4ec975f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x66e34a3da87a6eceb65976241e7d8139beac97d83d4df1fea8ec4e26cd4837f8","name":"Cosma Joy","registered_at":"2026-06-12T02:46:21Z","symbol":"NIM0163386","token_address":"0x954260d66ce734567007a24619f361fe8c270fac","type":"artist","uuid":"7d571096-386a-4503-a823-8a60e4ec975f"}
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 0x66e34a3da87a6eceb65976241e7d8139beac97d83d4df1fea8ec4e26cd4837f8. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d571096-386a-4503-a823-8a60e4ec975f.json and https://artists.proofprofile.net/proofs/artist/7d571096-386a-4503-a823-8a60e4ec975f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x66e34a3da87a6eceb65976241e7d8139beac97d83d4df1fea8ec4e26cd4837f8","name":"Cosma Joy","registered_at":"2026-06-12T02:46:21Z","symbol":"NIM0163386","token_address":"0x954260d66ce734567007a24619f361fe8c270fac","type":"artist","uuid":"7d571096-386a-4503-a823-8a60e4ec975f"}
album: At Seventeen
  type: MusicAlbum
  date published: 2019-02-15
album: Boy Boredom
  type: MusicAlbum
  date published: 2021-12-10
album: The Loneliest Thing
  type: MusicAlbum
  date published: 2022-01-14
album: Remember Me Sometime
  type: MusicAlbum
  date published: 2022-02-11
  track: Remember Me Sometime
    type: MusicRecording
    duration: PT3M2S
    duration ms: 182425
    explicit: false
    by artist: Cosma Joy
    in album: Remember Me Sometime
      type: MusicAlbum
      date published: 2022-02-11
    genre: smooth jazz
    isrc code: DEZZ42160706
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T03:37:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x14ab6db7b5702c2c91d02ba9a44464d18b0f6ee53ee3ac08345f9518d5f3a061
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958489
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958489
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZZ42160706
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T04:13:26Z
    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 0x14ab6db7b5702c2c91d02ba9a44464d18b0f6ee53ee3ac08345f9518d5f3a061. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEZZ42160706 — a six-check JSON result.
      date published: 2026-07-18T04:13:26Z
    audio: Remember Me Sometime
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 185.824
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.386
      additional property: Energy
        type: PropertyValue
        value: 0.369
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.945
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.109
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.322
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.85
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Boy Boredom
  type: MusicAlbum
  date published: 2022-03-11