León
type: MusicGroup
popularity: 2
followers: 22
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0cea5b0342baf28a3cbd0e521c49e1520266aa6486a1796d28fd98def379a29d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cfeb78eb-e646-4bdd-85c0-b1c6547141bb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cfeb78eb-e646-4bdd-85c0-b1c6547141bb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cfeb78eb-e646-4bdd-85c0-b1c6547141bb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0cea5b0342baf28a3cbd0e521c49e1520266aa6486a1796d28fd98def379a29d","name":"León","registered_at":"2026-06-21T00:52:07Z","symbol":"NIM1765290","token_address":"0xdf9f32910e51dafa1c98153c37807c7d64eb46d1","type":"artist","uuid":"cfeb78eb-e646-4bdd-85c0-b1c6547141bb"}
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 0x0cea5b0342baf28a3cbd0e521c49e1520266aa6486a1796d28fd98def379a29d. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfeb78eb-e646-4bdd-85c0-b1c6547141bb.json and https://artists.proofprofile.net/proofs/artist/cfeb78eb-e646-4bdd-85c0-b1c6547141bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x0cea5b0342baf28a3cbd0e521c49e1520266aa6486a1796d28fd98def379a29d","name":"León","registered_at":"2026-06-21T00:52:07Z","symbol":"NIM1765290","token_address":"0xdf9f32910e51dafa1c98153c37807c7d64eb46d1","type":"artist","uuid":"cfeb78eb-e646-4bdd-85c0-b1c6547141bb"}