Johnny Black
type: MusicGroup
genre: laïko
genre: rockabilly
popularity: 25
followers: 307
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbd84797620cb0a1add37dcdca522df1d0300cd521a1b056f37b0940e577723bb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/479f8349-d05f-4d2b-a22a-c079c3b2c640.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/479f8349-d05f-4d2b-a22a-c079c3b2c640.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/479f8349-d05f-4d2b-a22a-c079c3b2c640
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbd84797620cb0a1add37dcdca522df1d0300cd521a1b056f37b0940e577723bb","name":"Johnny Black","registered_at":"2026-06-11T18:55:28Z","symbol":"NIM0092143","token_address":"0xfdf14e61be43fda08f54a9670f52e5f1d87c3a01","type":"artist","uuid":"479f8349-d05f-4d2b-a22a-c079c3b2c640"}
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 0xbd84797620cb0a1add37dcdca522df1d0300cd521a1b056f37b0940e577723bb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/479f8349-d05f-4d2b-a22a-c079c3b2c640.json and https://artists.proofprofile.net/proofs/artist/479f8349-d05f-4d2b-a22a-c079c3b2c640.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xbd84797620cb0a1add37dcdca522df1d0300cd521a1b056f37b0940e577723bb","name":"Johnny Black","registered_at":"2026-06-11T18:55:28Z","symbol":"NIM0092143","token_address":"0xfdf14e61be43fda08f54a9670f52e5f1d87c3a01","type":"artist","uuid":"479f8349-d05f-4d2b-a22a-c079c3b2c640"}
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