Jan Boeke
type: MusicGroup
description: Jan Boeke (23 October 1874 – 12 September 1956) was a Dutch anatomist and neuro-histologist who worked at the University of Utrecht serving as Rector Magnificus in 1937 and in 1945 with a gap due to t
popularity: 2
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x71f434d7592e8b64febfcaba4c2c0c3f6567a9df4a0e197d9aa057d825295de8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f82548e6-bb4c-41ef-9db3-c8fc8e48a148.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f82548e6-bb4c-41ef-9db3-c8fc8e48a148.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f82548e6-bb4c-41ef-9db3-c8fc8e48a148
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x71f434d7592e8b64febfcaba4c2c0c3f6567a9df4a0e197d9aa057d825295de8","name":"Jan Boeke","registered_at":"2026-06-21T15:55:10Z","symbol":"NIM1965562","token_address":"0xcc0f91b4b729ebe8e6d4c92d5f1be58d3476a998","type":"artist","uuid":"f82548e6-bb4c-41ef-9db3-c8fc8e48a148"}
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 0x71f434d7592e8b64febfcaba4c2c0c3f6567a9df4a0e197d9aa057d825295de8. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f82548e6-bb4c-41ef-9db3-c8fc8e48a148.json and https://artists.proofprofile.net/proofs/artist/f82548e6-bb4c-41ef-9db3-c8fc8e48a148.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x71f434d7592e8b64febfcaba4c2c0c3f6567a9df4a0e197d9aa057d825295de8","name":"Jan Boeke","registered_at":"2026-06-21T15:55:10Z","symbol":"NIM1965562","token_address":"0xcc0f91b4b729ebe8e6d4c92d5f1be58d3476a998","type":"artist","uuid":"f82548e6-bb4c-41ef-9db3-c8fc8e48a148"}