Horacio El Negro Hernández
type: MusicGroup
genre: latin jazz
popularity: 2
followers: 66
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0f173cc5247b90c3f828cbd542ee85816ac0c6649463ec4e6e39a5f99c74d195
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b111b584-a94d-4527-9d07-28e99279fa35.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b111b584-a94d-4527-9d07-28e99279fa35.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b111b584-a94d-4527-9d07-28e99279fa35
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0f173cc5247b90c3f828cbd542ee85816ac0c6649463ec4e6e39a5f99c74d195","name":"Horacio El Negro Hernández","registered_at":"2026-06-20T12:21:01Z","symbol":"NIM1610847","token_address":"0x027aac27101061ad3293090636eb0cb4e6159a14","type":"artist","uuid":"b111b584-a94d-4527-9d07-28e99279fa35"}
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 0x0f173cc5247b90c3f828cbd542ee85816ac0c6649463ec4e6e39a5f99c74d195. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b111b584-a94d-4527-9d07-28e99279fa35.json and https://artists.proofprofile.net/proofs/artist/b111b584-a94d-4527-9d07-28e99279fa35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x0f173cc5247b90c3f828cbd542ee85816ac0c6649463ec4e6e39a5f99c74d195","name":"Horacio El Negro Hernández","registered_at":"2026-06-20T12:21:01Z","symbol":"NIM1610847","token_address":"0x027aac27101061ad3293090636eb0cb4e6159a14","type":"artist","uuid":"b111b584-a94d-4527-9d07-28e99279fa35"}
album: El Trio: Live in Italy
  type: MusicAlbum
  date published: 2023-11-03