Laf Qosma
type: MusicGroup
popularity: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa22234ba20603b79b053ddf89ffe022b118d8823dcb2b7ef7418d04189ce213a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e589cfc9-6167-4b9b-a4f8-cbae52ee944e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e589cfc9-6167-4b9b-a4f8-cbae52ee944e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e589cfc9-6167-4b9b-a4f8-cbae52ee944e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa22234ba20603b79b053ddf89ffe022b118d8823dcb2b7ef7418d04189ce213a","name":"Laf Qosma","registered_at":"2026-06-21T08:35:27Z","symbol":"NIM1872741","token_address":"0xf2cff516a6c794467d02772e6ff4acf4360011ef","type":"artist","uuid":"e589cfc9-6167-4b9b-a4f8-cbae52ee944e"}
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 0xa22234ba20603b79b053ddf89ffe022b118d8823dcb2b7ef7418d04189ce213a. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e589cfc9-6167-4b9b-a4f8-cbae52ee944e.json and https://artists.proofprofile.net/proofs/artist/e589cfc9-6167-4b9b-a4f8-cbae52ee944e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xa22234ba20603b79b053ddf89ffe022b118d8823dcb2b7ef7418d04189ce213a","name":"Laf Qosma","registered_at":"2026-06-21T08:35:27Z","symbol":"NIM1872741","token_address":"0xf2cff516a6c794467d02772e6ff4acf4360011ef","type":"artist","uuid":"e589cfc9-6167-4b9b-a4f8-cbae52ee944e"}
album: An Interlude in Time : A Journey Through Dust
  type: MusicAlbum
  date published: 2025-02-15
  track: Sere-Meno Secondo
    type: MusicRecording
    duration: PT0M59S
    duration ms: 59880
    explicit: false
    by artist: Laf Qosma
    in album: An Interlude in Time : A Journey Through Dust
      type: MusicAlbum
      date published: 2025-02-15
    isrc code: USHM82561968
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T12:42:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbd72ea12a15c3b795b1ed3b70ea3e82b6f969a937c28a3c11adc74f15b54bd91
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958157
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958157
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM82561968
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T15:45:27Z
    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 0xbd72ea12a15c3b795b1ed3b70ea3e82b6f969a937c28a3c11adc74f15b54bd91. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:45:27Z), 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/USHM82561968.
      date published: 2026-07-15T15:45:27Z
    audio: Sere-Meno Secondo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.727
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.168
      additional property: Energy
        type: PropertyValue
        value: 0.001
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.972
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.875
      additional property: Liveness
        type: PropertyValue
        value: 0.111
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.154
      additional property: Loudness (dB)
        type: PropertyValue
        value: -37.663
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor