Les Frères Morvan
type: MusicGroup
genre: celtic
genre: traditional music
popularity: 5
followers: 796
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x390ba1efe4a2b4ff85ce17263e4a8bc8e99c60a451c03bb37c1345c4e7eb5581
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953928
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953928
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1d814bab-1c98-4d1d-9074-50480dfdc029.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1d814bab-1c98-4d1d-9074-50480dfdc029.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1d814bab-1c98-4d1d-9074-50480dfdc029
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T10:21:55Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x390ba1efe4a2b4ff85ce17263e4a8bc8e99c60a451c03bb37c1345c4e7eb5581","name":"Les Frères Morvan","registered_at":"2026-06-15T23:51:13Z","symbol":"NIM0871270","token_address":"0xe9b161c72bd117ef4e990db7fce203c75228d984","type":"artist","uuid":"1d814bab-1c98-4d1d-9074-50480dfdc029"}
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 0x390ba1efe4a2b4ff85ce17263e4a8bc8e99c60a451c03bb37c1345c4e7eb5581. Chain 2 (Bitcoin): anchored in block 953928 (2026-06-16T10:21:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d814bab-1c98-4d1d-9074-50480dfdc029.json and https://artists.proofprofile.net/proofs/artist/1d814bab-1c98-4d1d-9074-50480dfdc029.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T10:21:55Z
  text: {"copyright_id":"0x390ba1efe4a2b4ff85ce17263e4a8bc8e99c60a451c03bb37c1345c4e7eb5581","name":"Les Frères Morvan","registered_at":"2026-06-15T23:51:13Z","symbol":"NIM0871270","token_address":"0xe9b161c72bd117ef4e990db7fce203c75228d984","type":"artist","uuid":"1d814bab-1c98-4d1d-9074-50480dfdc029"}
album: Ar Vreudeur Morvan
  type: MusicAlbum
  date published: 1993-10-01
album: Fest-noz à Botcôl
  type: MusicAlbum
  date published: 1999-10-08
album: Un demi-siècle de Kan ha Diskan
  type: MusicAlbum
  date published: 2009-06-05