David Robertson
type: MusicGroup
genre: minimalism
popularity: 18
followers: 442
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x74f538d760386372d2b05496551d54a9328b54dd2232ce94e02012226c49aa87
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953778
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953778
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aacdf326-1baf-4109-ae9b-ab2281a816e3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aacdf326-1baf-4109-ae9b-ab2281a816e3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aacdf326-1baf-4109-ae9b-ab2281a816e3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x74f538d760386372d2b05496551d54a9328b54dd2232ce94e02012226c49aa87","name":"David Robertson","registered_at":"2026-06-14T22:25:20Z","symbol":"NIM0595381","token_address":"0x8c5adb356de428bef36e39669e51aa3f581b7ea2","type":"artist","uuid":"aacdf326-1baf-4109-ae9b-ab2281a816e3"}
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 0x74f538d760386372d2b05496551d54a9328b54dd2232ce94e02012226c49aa87. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aacdf326-1baf-4109-ae9b-ab2281a816e3.json and https://artists.proofprofile.net/proofs/artist/aacdf326-1baf-4109-ae9b-ab2281a816e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x74f538d760386372d2b05496551d54a9328b54dd2232ce94e02012226c49aa87","name":"David Robertson","registered_at":"2026-06-14T22:25:20Z","symbol":"NIM0595381","token_address":"0x8c5adb356de428bef36e39669e51aa3f581b7ea2","type":"artist","uuid":"aacdf326-1baf-4109-ae9b-ab2281a816e3"}
album: Beautiful Passing, Music for Violin and Orchestra by Steven Mackey
  type: MusicAlbum
  date published: 2022-12-09
album: CONTACT! with Alan Gilbert and David Robertson
  type: MusicAlbum
  date published: 2012-10-16