Kathleen Grace
type: MusicGroup
genre: vocal jazz
popularity: 2
followers: 447
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe15a718afebfff38d4f9ca70afc0271b316505e284047ba2ba502bd3d2a1a11e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953882
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953882
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0a499bab-63d0-49ab-b37d-3dd1eca22d2d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0a499bab-63d0-49ab-b37d-3dd1eca22d2d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0a499bab-63d0-49ab-b37d-3dd1eca22d2d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T03:13:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe15a718afebfff38d4f9ca70afc0271b316505e284047ba2ba502bd3d2a1a11e","name":"Kathleen Grace","registered_at":"2026-06-15T17:10:00Z","symbol":"NIM0775557","token_address":"0xa0da8eebe971f34a419e63fbca6984e8a582bde3","type":"artist","uuid":"0a499bab-63d0-49ab-b37d-3dd1eca22d2d"}
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 0xe15a718afebfff38d4f9ca70afc0271b316505e284047ba2ba502bd3d2a1a11e. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a499bab-63d0-49ab-b37d-3dd1eca22d2d.json and https://artists.proofprofile.net/proofs/artist/0a499bab-63d0-49ab-b37d-3dd1eca22d2d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xe15a718afebfff38d4f9ca70afc0271b316505e284047ba2ba502bd3d2a1a11e","name":"Kathleen Grace","registered_at":"2026-06-15T17:10:00Z","symbol":"NIM0775557","token_address":"0xa0da8eebe971f34a419e63fbca6984e8a582bde3","type":"artist","uuid":"0a499bab-63d0-49ab-b37d-3dd1eca22d2d"}
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