Xurco
type: MusicGroup
popularity: 3
followers: 125
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x674e6e4d3821a3d846a1b5d799757178178573831349191c52f037f56aad880e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953984
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953984
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2cfdfc69-50ac-4c57-872c-86a5a018a352.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2cfdfc69-50ac-4c57-872c-86a5a018a352.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2cfdfc69-50ac-4c57-872c-86a5a018a352
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T18:08:34Z
additional property: OTSCanonicalRecord
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 0x674e6e4d3821a3d846a1b5d799757178178573831349191c52f037f56aad880e. Chain 2 (Bitcoin): anchored in block 953985 (2026-06-16T18:03:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2cfdfc69-50ac-4c57-872c-86a5a018a352.json and https://artists.proofprofile.net/proofs/artist/2cfdfc69-50ac-4c57-872c-86a5a018a352.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T18:03:53Z
album: Rolling Stone
  type: MusicAlbum
  date published: 2024-03-22
  track: Rolling Stone
    type: MusicRecording
    duration: PT3M25S
    duration ms: 205703
    explicit: true
    by artist: Xurco
    in album: Rolling Stone
      type: MusicAlbum
      date published: 2024-03-22
    isrc code: QZHN82453189
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T21:26:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x065d5eb70b56fc1b3b90a122d8e67f5139fba8be819709db5a124a119d391374
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958617
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958617
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN82453189
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T22:07:13Z
    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 0x065d5eb70b56fc1b3b90a122d8e67f5139fba8be819709db5a124a119d391374. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZHN82453189.
      date published: 2026-07-18T22:07:13Z
    audio: Rolling Stone
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.007
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.726
      additional property: Energy
        type: PropertyValue
        value: 0.437
      additional property: Speechiness
        type: PropertyValue
        value: 0.047
      additional property: Acousticness
        type: PropertyValue
        value: 0.827
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.227
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.434
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.824
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Time Line
  type: MusicAlbum
  date published: 2024-07-09
album: Hop Out
  type: MusicAlbum
  date published: 2024-07-11
album: Do Too Much
  type: MusicAlbum
  date published: 2024-07-13
album: Warzone
  type: MusicAlbum
  date published: 2024-07-13
album: Contraband
  type: MusicAlbum
  date published: 2024-07-13
album: Miss U When U Leave
  type: MusicAlbum
  date published: 2024-07-15
album: Love
  type: MusicAlbum
  date published: 2024-07-17
album: Supersoak
  type: MusicAlbum
  date published: 2024-07-24
album: Don't Need To Know
  type: MusicAlbum
  date published: 2024-07-24