FREE AU
type: MusicGroup
popularity: 3
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4e7827c88f29a64cea69a6520a69cf047ed708949e89c60c3a3691b62f617a72
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/889256dc-aaa2-45c7-bf0a-f7473fed14fd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/889256dc-aaa2-45c7-bf0a-f7473fed14fd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/889256dc-aaa2-45c7-bf0a-f7473fed14fd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4e7827c88f29a64cea69a6520a69cf047ed708949e89c60c3a3691b62f617a72","name":"FREE AU","registered_at":"2026-06-17T13:13:56Z","symbol":"NIM1406346","token_address":"0x0b9d735baaee47593bcbed79da41daf7b8576e54","type":"artist","uuid":"889256dc-aaa2-45c7-bf0a-f7473fed14fd"}
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 0x4e7827c88f29a64cea69a6520a69cf047ed708949e89c60c3a3691b62f617a72. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/889256dc-aaa2-45c7-bf0a-f7473fed14fd.json and https://artists.proofprofile.net/proofs/artist/889256dc-aaa2-45c7-bf0a-f7473fed14fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x4e7827c88f29a64cea69a6520a69cf047ed708949e89c60c3a3691b62f617a72","name":"FREE AU","registered_at":"2026-06-17T13:13:56Z","symbol":"NIM1406346","token_address":"0x0b9d735baaee47593bcbed79da41daf7b8576e54","type":"artist","uuid":"889256dc-aaa2-45c7-bf0a-f7473fed14fd"}
album: Cancion Triste
  type: MusicAlbum
  date published: 2020-02-29
  track: Cancion Triste
    type: MusicRecording
    duration: PT3M4S
    duration ms: 184650
    explicit: true
    by artist: FREE AU
    in album: Cancion Triste
      type: MusicAlbum
      date published: 2020-02-29
    isrc code: US7VG2066932
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T07:57:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdcb13e0766cd541bd2a6c0613c8cab8997a68180ba9533b8c2975ff76cb61330
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958388
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958388
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2066932
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T10:58:52Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb13e0766cd541bd2a6c0613c8cab8997a68180ba9533b8c2975ff76cb61330. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:58:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2066932.
      date published: 2026-07-17T10:58:52Z
    audio: Cancion Triste
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.912
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.744
      additional property: Energy
        type: PropertyValue
        value: 0.614
      additional property: Speechiness
        type: PropertyValue
        value: 0.152
      additional property: Acousticness
        type: PropertyValue
        value: 0.255
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.099
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.469
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.679
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor