Matthew Hardy
type: MusicGroup
popularity: 9
followers: 133
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xef88c5f937e67b7f9d23df18c8cf2d23b1f0b651f059c4899c3ac8e28ab61d24
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953896
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953896
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/104f5f9e-551b-4cff-b98a-bc2570e935ab.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/104f5f9e-551b-4cff-b98a-bc2570e935ab.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/104f5f9e-551b-4cff-b98a-bc2570e935ab
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:05:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xef88c5f937e67b7f9d23df18c8cf2d23b1f0b651f059c4899c3ac8e28ab61d24","name":"Matthew Hardy","registered_at":"2026-06-15T19:12:59Z","symbol":"NIM0804908","token_address":"0x54aa597efebe83469292419a0e169c97dd6610fd","type":"artist","uuid":"104f5f9e-551b-4cff-b98a-bc2570e935ab"}
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 0xef88c5f937e67b7f9d23df18c8cf2d23b1f0b651f059c4899c3ac8e28ab61d24. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/104f5f9e-551b-4cff-b98a-bc2570e935ab.json and https://artists.proofprofile.net/proofs/artist/104f5f9e-551b-4cff-b98a-bc2570e935ab.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T06:05:56Z
  text: {"copyright_id":"0xef88c5f937e67b7f9d23df18c8cf2d23b1f0b651f059c4899c3ac8e28ab61d24","name":"Matthew Hardy","registered_at":"2026-06-15T19:12:59Z","symbol":"NIM0804908","token_address":"0x54aa597efebe83469292419a0e169c97dd6610fd","type":"artist","uuid":"104f5f9e-551b-4cff-b98a-bc2570e935ab"}
album: Virtuoso (Original Polish Cast Recording)
  type: MusicAlbum
  date published: 2024-02-02