Old MacDonald's
type: MusicGroup
popularity: 7
followers: 3958
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x998b356f30d37bf14e32b62e38af12c54cff517587e0934d2f972f63f72d2eae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954615
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954615
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7068b3d-8b39-4e7d-b326-c8f2fc6c3950.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7068b3d-8b39-4e7d-b326-c8f2fc6c3950.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c7068b3d-8b39-4e7d-b326-c8f2fc6c3950
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T22:44:50Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x998b356f30d37bf14e32b62e38af12c54cff517587e0934d2f972f63f72d2eae","name":"Old MacDonald's","registered_at":"2026-06-20T21:21:50Z","symbol":"NIM1719217","token_address":"0x50827a7dad014816b4e0655c34cae2f6236ec04a","type":"artist","uuid":"c7068b3d-8b39-4e7d-b326-c8f2fc6c3950"}
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 0x998b356f30d37bf14e32b62e38af12c54cff517587e0934d2f972f63f72d2eae. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7068b3d-8b39-4e7d-b326-c8f2fc6c3950.json and https://artists.proofprofile.net/proofs/artist/c7068b3d-8b39-4e7d-b326-c8f2fc6c3950.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T22:44:50Z
  text: {"copyright_id":"0x998b356f30d37bf14e32b62e38af12c54cff517587e0934d2f972f63f72d2eae","name":"Old MacDonald's","registered_at":"2026-06-20T21:21:50Z","symbol":"NIM1719217","token_address":"0x50827a7dad014816b4e0655c34cae2f6236ec04a","type":"artist","uuid":"c7068b3d-8b39-4e7d-b326-c8f2fc6c3950"}
album: The Best Nursery Rhymes
  type: MusicAlbum
  date published: 2017-03-01