David Joyce
type: MusicGroup
description: David Joyce may refer to: David Joyce (businessman) (1825–1894), American lumber baron and industrialist in the 1800s David Joyce (politician) (born 1957), American politician and U.S. Representati
popularity: 2
followers: 23
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6238e983f839df65fa3847ca27b3fe4c1c9050c0c413d9a72bc608c2dbc2d0ae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953857
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953857
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/028f0b18-2479-4f3d-b510-49515048fe91.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/028f0b18-2479-4f3d-b510-49515048fe91.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/028f0b18-2479-4f3d-b510-49515048fe91
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:34:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6238e983f839df65fa3847ca27b3fe4c1c9050c0c413d9a72bc608c2dbc2d0ae","name":"David Joyce","registered_at":"2026-06-15T14:22:26Z","symbol":"NIM0735552","token_address":"0xd8b82ade835b21cb2a366d4ceddbd23992e4802c","type":"artist","uuid":"028f0b18-2479-4f3d-b510-49515048fe91"}
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 0x6238e983f839df65fa3847ca27b3fe4c1c9050c0c413d9a72bc608c2dbc2d0ae. Chain 2 (Bitcoin): anchored in block 953857 (2026-06-15T23:34:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/028f0b18-2479-4f3d-b510-49515048fe91.json and https://artists.proofprofile.net/proofs/artist/028f0b18-2479-4f3d-b510-49515048fe91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T23:34:38Z
  text: {"copyright_id":"0x6238e983f839df65fa3847ca27b3fe4c1c9050c0c413d9a72bc608c2dbc2d0ae","name":"David Joyce","registered_at":"2026-06-15T14:22:26Z","symbol":"NIM0735552","token_address":"0xd8b82ade835b21cb2a366d4ceddbd23992e4802c","type":"artist","uuid":"028f0b18-2479-4f3d-b510-49515048fe91"}
album: Stay Awake
  type: MusicAlbum
  date published: 2018-02-16