Owen Hart Jr.
type: MusicGroup
genre: bebop
genre: free jazz
popularity: 4
followers: 33
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x73d650efd21d8a539d2979c78d243f7f331dc3c695c156aa66ccf2e29341c32c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953871
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953871
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06cdbacc-bab5-4fac-9eda-f3895839c8f8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06cdbacc-bab5-4fac-9eda-f3895839c8f8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/06cdbacc-bab5-4fac-9eda-f3895839c8f8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:46:03Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x73d650efd21d8a539d2979c78d243f7f331dc3c695c156aa66ccf2e29341c32c","name":"Owen Hart Jr.","registered_at":"2026-06-15T16:07:30Z","symbol":"NIM0760646","token_address":"0x4efc85118698acfbdf3ed839b244a03ae90bb768","type":"artist","uuid":"06cdbacc-bab5-4fac-9eda-f3895839c8f8"}
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 0x73d650efd21d8a539d2979c78d243f7f331dc3c695c156aa66ccf2e29341c32c. Chain 2 (Bitcoin): anchored in block 953871 (2026-06-16T01:46:03Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06cdbacc-bab5-4fac-9eda-f3895839c8f8.json and https://artists.proofprofile.net/proofs/artist/06cdbacc-bab5-4fac-9eda-f3895839c8f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:46:03Z
  text: {"copyright_id":"0x73d650efd21d8a539d2979c78d243f7f331dc3c695c156aa66ccf2e29341c32c","name":"Owen Hart Jr.","registered_at":"2026-06-15T16:07:30Z","symbol":"NIM0760646","token_address":"0x4efc85118698acfbdf3ed839b244a03ae90bb768","type":"artist","uuid":"06cdbacc-bab5-4fac-9eda-f3895839c8f8"}