Юлия Ковальчук
type: MusicGroup
popularity: 11
followers: 833
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3b7150c78834731b672c501ae03ada0a42acae69680a391b4b2033ba497e0eeb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953778
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953778
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/caf18cd1-0a69-4631-990a-660d3f393aa3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/caf18cd1-0a69-4631-990a-660d3f393aa3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/caf18cd1-0a69-4631-990a-660d3f393aa3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3b7150c78834731b672c501ae03ada0a42acae69680a391b4b2033ba497e0eeb","name":"Юлия Ковальчук","registered_at":"2026-06-15T01:56:42Z","symbol":"NIM0645888","token_address":"0x9c2e6c356e416957585fb78ae9d5178f01c2707e","type":"artist","uuid":"caf18cd1-0a69-4631-990a-660d3f393aa3"}
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 0x3b7150c78834731b672c501ae03ada0a42acae69680a391b4b2033ba497e0eeb. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/caf18cd1-0a69-4631-990a-660d3f393aa3.json and https://artists.proofprofile.net/proofs/artist/caf18cd1-0a69-4631-990a-660d3f393aa3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x3b7150c78834731b672c501ae03ada0a42acae69680a391b4b2033ba497e0eeb","name":"Юлия Ковальчук","registered_at":"2026-06-15T01:56:42Z","symbol":"NIM0645888","token_address":"0x9c2e6c356e416957585fb78ae9d5178f01c2707e","type":"artist","uuid":"caf18cd1-0a69-4631-990a-660d3f393aa3"}
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