Xavier Harper
type: MusicGroup
popularity: 3
followers: 105
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf3a1e95755a0a07aecd18fd878406b5d38e542518a54d22ccf2a1164af4405a7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953885
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953885
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ccca13c-7bb6-472a-8c22-9e8eaf041a42.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ccca13c-7bb6-472a-8c22-9e8eaf041a42.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0ccca13c-7bb6-472a-8c22-9e8eaf041a42
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:12:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf3a1e95755a0a07aecd18fd878406b5d38e542518a54d22ccf2a1164af4405a7","name":"Xavier Harper","registered_at":"2026-06-15T17:50:15Z","symbol":"NIM0785169","token_address":"0xaeff45bf6c56ad6f0d7314c781c675eb0d83ebf6","type":"artist","uuid":"0ccca13c-7bb6-472a-8c22-9e8eaf041a42"}
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 0xf3a1e95755a0a07aecd18fd878406b5d38e542518a54d22ccf2a1164af4405a7. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ccca13c-7bb6-472a-8c22-9e8eaf041a42.json and https://artists.proofprofile.net/proofs/artist/0ccca13c-7bb6-472a-8c22-9e8eaf041a42.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T04:12:47Z
  text: {"copyright_id":"0xf3a1e95755a0a07aecd18fd878406b5d38e542518a54d22ccf2a1164af4405a7","name":"Xavier Harper","registered_at":"2026-06-15T17:50:15Z","symbol":"NIM0785169","token_address":"0xaeff45bf6c56ad6f0d7314c781c675eb0d83ebf6","type":"artist","uuid":"0ccca13c-7bb6-472a-8c22-9e8eaf041a42"}
album: weird
  type: MusicAlbum
  date published: 2024-01-16
album: SUMMER REGRETS
  type: MusicAlbum
  date published: 2024-05-22
album: WEIRD
  type: MusicAlbum
  date published: 2024-10-18
  track: HOLLYWOOD
    type: MusicRecording
    duration: PT2M14S
    duration ms: 134035
    explicit: false
    by artist: Xavier Harper
    in album: WEIRD
      type: MusicAlbum
      date published: 2024-10-18
    isrc code: QZWFS2433364
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T09:59:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb7874343d2957d6556d4ba11f3a2538255b39a44e15ec1d806770307f575c6ba
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958992
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958992
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFS2433364
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T10:12:17Z
    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 0xb7874343d2957d6556d4ba11f3a2538255b39a44e15ec1d806770307f575c6ba. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZWFS2433364 — a six-check JSON result.
      date published: 2026-07-21T10:12:17Z
    audio: HOLLYWOOD
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 85.995
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.776
      additional property: Energy
        type: PropertyValue
        value: 0.563
      additional property: Speechiness
        type: PropertyValue
        value: 0.057
      additional property: Acousticness
        type: PropertyValue
        value: 0.257
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.085
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.767
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.739
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: SUMMER CONFESSIONS
  type: MusicAlbum
  date published: 2025-07-04
album: LIFE'S NOT FAIR
  type: MusicAlbum
  date published: 2025-07-21
album: YOU DON'T MEAN IT
  type: MusicAlbum
  date published: 2025-09-03
album: TOP DOWN
  type: MusicAlbum
  date published: 2025-09-16
album: i need you to stay
  type: MusicAlbum
  date published: 2025-10-25