Sergi Espina
type: MusicGroup
popularity: 13
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x10c2da230d4c5fa18b215c1f4cbd831dae7ede03b6eef16c849e4ab2f0daf4f1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953630
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953630
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/316be59b-1808-41aa-a435-e7f4a9243f5b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/316be59b-1808-41aa-a435-e7f4a9243f5b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/316be59b-1808-41aa-a435-e7f4a9243f5b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T12:06:27Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x10c2da230d4c5fa18b215c1f4cbd831dae7ede03b6eef16c849e4ab2f0daf4f1","name":"Sergi Espina","registered_at":"2026-06-14T09:38:10Z","symbol":"NIM0412382","token_address":"0x61effc769a05319d3cd153f9329e9930c5e5efad","type":"artist","uuid":"316be59b-1808-41aa-a435-e7f4a9243f5b"}
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 0x10c2da230d4c5fa18b215c1f4cbd831dae7ede03b6eef16c849e4ab2f0daf4f1. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/316be59b-1808-41aa-a435-e7f4a9243f5b.json and https://artists.proofprofile.net/proofs/artist/316be59b-1808-41aa-a435-e7f4a9243f5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T12:06:27Z
  text: {"copyright_id":"0x10c2da230d4c5fa18b215c1f4cbd831dae7ede03b6eef16c849e4ab2f0daf4f1","name":"Sergi Espina","registered_at":"2026-06-14T09:38:10Z","symbol":"NIM0412382","token_address":"0x61effc769a05319d3cd153f9329e9930c5e5efad","type":"artist","uuid":"316be59b-1808-41aa-a435-e7f4a9243f5b"}