Kathryn Cok
type: MusicGroup
popularity: 2
followers: 106
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d7addfd04678ecdd91c55dd2bb5db6f4cbfb2931409dff746ed4af9e084a267
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/62da5768-7766-4e5f-b751-f08d5dc916dc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/62da5768-7766-4e5f-b751-f08d5dc916dc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/62da5768-7766-4e5f-b751-f08d5dc916dc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9d7addfd04678ecdd91c55dd2bb5db6f4cbfb2931409dff746ed4af9e084a267","name":"Kathryn Cok","registered_at":"2026-06-17T00:07:12Z","symbol":"NIM1218785","token_address":"0xc4d9126e2a6af74ad88e6e5864b75ddd05942e5a","type":"artist","uuid":"62da5768-7766-4e5f-b751-f08d5dc916dc"}
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 0x9d7addfd04678ecdd91c55dd2bb5db6f4cbfb2931409dff746ed4af9e084a267. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62da5768-7766-4e5f-b751-f08d5dc916dc.json and https://artists.proofprofile.net/proofs/artist/62da5768-7766-4e5f-b751-f08d5dc916dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x9d7addfd04678ecdd91c55dd2bb5db6f4cbfb2931409dff746ed4af9e084a267","name":"Kathryn Cok","registered_at":"2026-06-17T00:07:12Z","symbol":"NIM1218785","token_address":"0xc4d9126e2a6af74ad88e6e5864b75ddd05942e5a","type":"artist","uuid":"62da5768-7766-4e5f-b751-f08d5dc916dc"}
album: Dear Friends and Gentle Hearts: Songs of Stephen C. Foster
  type: MusicAlbum
  date published: 1999-04-20
album: Dr. Bull's Jewel - Keyboard Music of John Bull
  type: MusicAlbum
  date published: 2007-11-01
album: Pavana
  type: MusicAlbum
  date published: 2014-10-10
album: Dialogue
  type: MusicAlbum
  date published: 2022-10-31