Francois Campion
type: MusicGroup
popularity: 2
followers: 137
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd8ceae415f3eb19db2eb19dd7cee9882974df0acf2a7d2ffe569400b50109ed6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954008
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954008
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3285d043-37d5-434a-a17e-564969be473e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3285d043-37d5-434a-a17e-564969be473e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3285d043-37d5-434a-a17e-564969be473e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T21:31:27Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd8ceae415f3eb19db2eb19dd7cee9882974df0acf2a7d2ffe569400b50109ed6","name":"Francois Campion","registered_at":"2026-06-16T07:28:37Z","symbol":"NIM0980523","token_address":"0x5e25b623c156ecccb3a7762aaee723cdefe834d3","type":"artist","uuid":"3285d043-37d5-434a-a17e-564969be473e"}
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 0xd8ceae415f3eb19db2eb19dd7cee9882974df0acf2a7d2ffe569400b50109ed6. Chain 2 (Bitcoin): anchored in block 954008 (2026-06-16T21:31:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3285d043-37d5-434a-a17e-564969be473e.json and https://artists.proofprofile.net/proofs/artist/3285d043-37d5-434a-a17e-564969be473e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T21:31:27Z
  text: {"copyright_id":"0xd8ceae415f3eb19db2eb19dd7cee9882974df0acf2a7d2ffe569400b50109ed6","name":"Francois Campion","registered_at":"2026-06-16T07:28:37Z","symbol":"NIM0980523","token_address":"0x5e25b623c156ecccb3a7762aaee723cdefe834d3","type":"artist","uuid":"3285d043-37d5-434a-a17e-564969be473e"}
album: Campion : Nouvelles découvertes sur la guitare, 1705
  type: MusicAlbum
  date published: 2010
album: Campion: Music for Baroque Guitar
  type: MusicAlbum
  date published: 2017-07-28