Herbert Hart
type: MusicGroup
popularity: 6
followers: 9
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf3cddd13ea31dfdf42e96de86da1b531840fdf7a3dc2c97472deba0120add26d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954038
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954038
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3d98e636-4959-4294-ad2c-10e5cc9b871b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3d98e636-4959-4294-ad2c-10e5cc9b871b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3d98e636-4959-4294-ad2c-10e5cc9b871b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T02:57:22Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf3cddd13ea31dfdf42e96de86da1b531840fdf7a3dc2c97472deba0120add26d","name":"Herbert Hart","registered_at":"2026-06-16T11:05:40Z","symbol":"NIM1032323","token_address":"0x592587c63f3405e0d290aeaa886e1d1aed9b81a3","type":"artist","uuid":"3d98e636-4959-4294-ad2c-10e5cc9b871b"}
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 0xf3cddd13ea31dfdf42e96de86da1b531840fdf7a3dc2c97472deba0120add26d. Chain 2 (Bitcoin): anchored in block 954038 (2026-06-17T02:57:22Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d98e636-4959-4294-ad2c-10e5cc9b871b.json and https://artists.proofprofile.net/proofs/artist/3d98e636-4959-4294-ad2c-10e5cc9b871b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T02:57:22Z
  text: {"copyright_id":"0xf3cddd13ea31dfdf42e96de86da1b531840fdf7a3dc2c97472deba0120add26d","name":"Herbert Hart","registered_at":"2026-06-16T11:05:40Z","symbol":"NIM1032323","token_address":"0x592587c63f3405e0d290aeaa886e1d1aed9b81a3","type":"artist","uuid":"3d98e636-4959-4294-ad2c-10e5cc9b871b"}