Leonardo Urriera
type: MusicGroup
genre: afropop
popularity: 2
followers: 63
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x62d19d02f28eeb4d9db675601a0ec49f1466edb22ad946219d32caf6d02c4a8a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f8839ef-1781-465b-a69a-0a6e40583a68.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f8839ef-1781-465b-a69a-0a6e40583a68.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7f8839ef-1781-465b-a69a-0a6e40583a68
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x62d19d02f28eeb4d9db675601a0ec49f1466edb22ad946219d32caf6d02c4a8a","name":"Leonardo Urriera","registered_at":"2026-06-17T10:01:40Z","symbol":"NIM1360579","token_address":"0x62f28cfd086953fed69a577ba97b447f07ebf4b4","type":"artist","uuid":"7f8839ef-1781-465b-a69a-0a6e40583a68"}
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 0x62d19d02f28eeb4d9db675601a0ec49f1466edb22ad946219d32caf6d02c4a8a. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f8839ef-1781-465b-a69a-0a6e40583a68.json and https://artists.proofprofile.net/proofs/artist/7f8839ef-1781-465b-a69a-0a6e40583a68.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:41:05Z
  text: {"copyright_id":"0x62d19d02f28eeb4d9db675601a0ec49f1466edb22ad946219d32caf6d02c4a8a","name":"Leonardo Urriera","registered_at":"2026-06-17T10:01:40Z","symbol":"NIM1360579","token_address":"0x62f28cfd086953fed69a577ba97b447f07ebf4b4","type":"artist","uuid":"7f8839ef-1781-465b-a69a-0a6e40583a68"}
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  type: MusicAlbum
  date published: 2021-03-05
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  type: MusicAlbum
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