David Hernán
type: MusicGroup
genre: lullaby
popularity: 16
followers: 57
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0e48bdd64086ad4fd22c369b03f1cc1fc3b5e3945f663f21c9362b199b813ae8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953684
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953684
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/660ecd85-f49f-43ab-92fd-876802fe841a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/660ecd85-f49f-43ab-92fd-876802fe841a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/660ecd85-f49f-43ab-92fd-876802fe841a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:51:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0e48bdd64086ad4fd22c369b03f1cc1fc3b5e3945f663f21c9362b199b813ae8","name":"David Hernán","registered_at":"2026-06-14T15:11:07Z","symbol":"NIM0491849","token_address":"0x17dfba252e327344a864c4dec42e1e87fffcfbca","type":"artist","uuid":"660ecd85-f49f-43ab-92fd-876802fe841a"}
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 0x0e48bdd64086ad4fd22c369b03f1cc1fc3b5e3945f663f21c9362b199b813ae8. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/660ecd85-f49f-43ab-92fd-876802fe841a.json and https://artists.proofprofile.net/proofs/artist/660ecd85-f49f-43ab-92fd-876802fe841a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:51:57Z
  text: {"copyright_id":"0x0e48bdd64086ad4fd22c369b03f1cc1fc3b5e3945f663f21c9362b199b813ae8","name":"David Hernán","registered_at":"2026-06-14T15:11:07Z","symbol":"NIM0491849","token_address":"0x17dfba252e327344a864c4dec42e1e87fffcfbca","type":"artist","uuid":"660ecd85-f49f-43ab-92fd-876802fe841a"}