Francesco Demuru
type: MusicGroup
genre: traditional music
popularity: 4
followers: 300
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe69685e31f07c5ac92aa1eab348ca08bc3b31f8191a553052f6d737143a12775
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b924d976-0681-4624-9b78-9d651391cb12.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b924d976-0681-4624-9b78-9d651391cb12.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b924d976-0681-4624-9b78-9d651391cb12
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe69685e31f07c5ac92aa1eab348ca08bc3b31f8191a553052f6d737143a12775","name":"Francesco Demuru","registered_at":"2026-06-20T15:52:29Z","symbol":"NIM1649712","token_address":"0x204fa1adde5e03343ef8e4e9a0b93e70d9ce6414","type":"artist","uuid":"b924d976-0681-4624-9b78-9d651391cb12"}
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 0xe69685e31f07c5ac92aa1eab348ca08bc3b31f8191a553052f6d737143a12775. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b924d976-0681-4624-9b78-9d651391cb12.json and https://artists.proofprofile.net/proofs/artist/b924d976-0681-4624-9b78-9d651391cb12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
  text: {"copyright_id":"0xe69685e31f07c5ac92aa1eab348ca08bc3b31f8191a553052f6d737143a12775","name":"Francesco Demuru","registered_at":"2026-06-20T15:52:29Z","symbol":"NIM1649712","token_address":"0x204fa1adde5e03343ef8e4e9a0b93e70d9ce6414","type":"artist","uuid":"b924d976-0681-4624-9b78-9d651391cb12"}
album: Manzaniles (Cantos a chiterra in la diesis)
  type: MusicAlbum
  date published: 2001-05-10
album: Terra cara (Cantos a chiterra)
  type: MusicAlbum
  date published: 2003-05-10
album: Italie: Sardaigne, Cantu A Chiterra (Chant À Guitare) [Italia: Sardinia, Cantu A Chiterra]
  type: MusicAlbum
  date published: 2007-04-11