Rees van Sand
type: MusicGroup
popularity: 8
followers: 28
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf866f039325a0a6bc6ebd0ba0584ee120e90f368214ccb52bed6462902c9c7c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954593
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954593
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/be69b9d3-16f9-4e71-bafe-23f5d151119a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/be69b9d3-16f9-4e71-bafe-23f5d151119a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/be69b9d3-16f9-4e71-bafe-23f5d151119a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:46:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf866f039325a0a6bc6ebd0ba0584ee120e90f368214ccb52bed6462902c9c7c2","name":"Rees van Sand","registered_at":"2026-06-20T18:13:13Z","symbol":"NIM1675622","token_address":"0x7b7b38a13917f465314d9ba7a73433988bd97d42","type":"artist","uuid":"be69b9d3-16f9-4e71-bafe-23f5d151119a"}
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 0xf866f039325a0a6bc6ebd0ba0584ee120e90f368214ccb52bed6462902c9c7c2. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be69b9d3-16f9-4e71-bafe-23f5d151119a.json and https://artists.proofprofile.net/proofs/artist/be69b9d3-16f9-4e71-bafe-23f5d151119a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:46:01Z
  text: {"copyright_id":"0xf866f039325a0a6bc6ebd0ba0584ee120e90f368214ccb52bed6462902c9c7c2","name":"Rees van Sand","registered_at":"2026-06-20T18:13:13Z","symbol":"NIM1675622","token_address":"0x7b7b38a13917f465314d9ba7a73433988bd97d42","type":"artist","uuid":"be69b9d3-16f9-4e71-bafe-23f5d151119a"}
album: Shadows
  type: MusicAlbum
  date published: 2016-03-18
album: Shadows
  type: MusicAlbum
  date published: 2016-06-03
album: Mary’s Prayer
  type: MusicAlbum
  date published: 2016-07-08
album: Mary's Prayer
  type: MusicAlbum
  date published: 2016-07-08
  track: Mary's Prayer - Extended Mix
    type: MusicRecording
    duration: PT4M17S
    duration ms: 257704
    explicit: false
    by artist: Rees van Sand
    in album: Mary's Prayer
      type: MusicAlbum
      date published: 2016-07-08
    isrc code: DEEA51601496
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T05:20:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1bc38f6ce5c2565582bf18ebdb3187ee829fbce0faf0f3b5e539b0174f4909df
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958832
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958832
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEEA51601496
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T08:22:23Z
    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 0x1bc38f6ce5c2565582bf18ebdb3187ee829fbce0faf0f3b5e539b0174f4909df. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:23Z), 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/DEEA51601496.
      date published: 2026-07-20T08:22:23Z
    audio: Mary's Prayer - Extended Mix
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 121.998
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.8
      additional property: Energy
        type: PropertyValue
        value: 0.484
      additional property: Speechiness
        type: PropertyValue
        value: 0.036
      additional property: Acousticness
        type: PropertyValue
        value: 0.021
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.056
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.772
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.291
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Missing Chances
  type: MusicAlbum
  date published: 2017-07-14