Xavier Esparrach
type: MusicGroup
popularity: 12
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2c8031f39f48bc7460e2865028a997026f99456cb534a5d222c9030a64d3bd8d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953648
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953648
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43ccb700-0fc3-45df-9c0b-0c8cf82768ae.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/43ccb700-0fc3-45df-9c0b-0c8cf82768ae.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/43ccb700-0fc3-45df-9c0b-0c8cf82768ae
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T15:20:52Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2c8031f39f48bc7460e2865028a997026f99456cb534a5d222c9030a64d3bd8d","name":"Xavier Esparrach","registered_at":"2026-06-14T11:33:25Z","symbol":"NIM0439878","token_address":"0x0a66e9018f8276ad4be5fb44ab00be30dc4a1d14","type":"artist","uuid":"43ccb700-0fc3-45df-9c0b-0c8cf82768ae"}
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 0x2c8031f39f48bc7460e2865028a997026f99456cb534a5d222c9030a64d3bd8d. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43ccb700-0fc3-45df-9c0b-0c8cf82768ae.json and https://artists.proofprofile.net/proofs/artist/43ccb700-0fc3-45df-9c0b-0c8cf82768ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T15:20:52Z
  text: {"copyright_id":"0x2c8031f39f48bc7460e2865028a997026f99456cb534a5d222c9030a64d3bd8d","name":"Xavier Esparrach","registered_at":"2026-06-14T11:33:25Z","symbol":"NIM0439878","token_address":"0x0a66e9018f8276ad4be5fb44ab00be30dc4a1d14","type":"artist","uuid":"43ccb700-0fc3-45df-9c0b-0c8cf82768ae"}