David Hordijk
type: MusicGroup
popularity: 2
followers: 595
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9fb8ff4eae0db0ba77ef78326465d9beabf02b30017f6e6ae5f4b9ef705bb188
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953899
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1379c4da-48bd-4451-bcb8-88f690855cb8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1379c4da-48bd-4451-bcb8-88f690855cb8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1379c4da-48bd-4451-bcb8-88f690855cb8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:37:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9fb8ff4eae0db0ba77ef78326465d9beabf02b30017f6e6ae5f4b9ef705bb188","name":"David Hordijk","registered_at":"2026-06-15T20:12:34Z","symbol":"NIM0819110","token_address":"0x422dfe438912281e9f7bf1a904e4542371a9d486","type":"artist","uuid":"1379c4da-48bd-4451-bcb8-88f690855cb8"}
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 0x9fb8ff4eae0db0ba77ef78326465d9beabf02b30017f6e6ae5f4b9ef705bb188. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1379c4da-48bd-4451-bcb8-88f690855cb8.json and https://artists.proofprofile.net/proofs/artist/1379c4da-48bd-4451-bcb8-88f690855cb8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T06:37:25Z
  text: {"copyright_id":"0x9fb8ff4eae0db0ba77ef78326465d9beabf02b30017f6e6ae5f4b9ef705bb188","name":"David Hordijk","registered_at":"2026-06-15T20:12:34Z","symbol":"NIM0819110","token_address":"0x422dfe438912281e9f7bf1a904e4542371a9d486","type":"artist","uuid":"1379c4da-48bd-4451-bcb8-88f690855cb8"}
album: Touch
  type: MusicAlbum
  date published: 2017-04-15
album: Waves
  type: MusicAlbum
  date published: 2019-04-14
album: Further
  type: MusicAlbum
  date published: 2019-10-20
album: Dare
  type: MusicAlbum
  date published: 2022-09-03
album: On Top
  type: MusicAlbum
  date published: 2022-10-03
album: Some Peace
  type: MusicAlbum
  date published: 2024-03-24
album: Soon
  type: MusicAlbum
  date published: 2024-04-22
album: The Wake
  type: MusicAlbum
  date published: 2025-02-04