Leonardo César
type: MusicGroup
popularity: 11
followers: 48
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9bdb21e927e4f2cb5d1463e7007612340d15f165a9e5466527985a2f5e0766be
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953657
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953657
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4b167bbe-0d66-436f-863a-5b5107e64f40.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4b167bbe-0d66-436f-863a-5b5107e64f40.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4b167bbe-0d66-436f-863a-5b5107e64f40
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:43:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9bdb21e927e4f2cb5d1463e7007612340d15f165a9e5466527985a2f5e0766be","name":"Leonardo César","registered_at":"2026-06-14T12:19:02Z","symbol":"NIM0450772","token_address":"0xdc8154d8bf5a7128af23e3c8b0ca9a9be91b08db","type":"artist","uuid":"4b167bbe-0d66-436f-863a-5b5107e64f40"}
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 0x9bdb21e927e4f2cb5d1463e7007612340d15f165a9e5466527985a2f5e0766be. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b167bbe-0d66-436f-863a-5b5107e64f40.json and https://artists.proofprofile.net/proofs/artist/4b167bbe-0d66-436f-863a-5b5107e64f40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:43:25Z
  text: {"copyright_id":"0x9bdb21e927e4f2cb5d1463e7007612340d15f165a9e5466527985a2f5e0766be","name":"Leonardo César","registered_at":"2026-06-14T12:19:02Z","symbol":"NIM0450772","token_address":"0xdc8154d8bf5a7128af23e3c8b0ca9a9be91b08db","type":"artist","uuid":"4b167bbe-0d66-436f-863a-5b5107e64f40"}
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