Pieter Goemans
type: MusicGroup
description: thumb|right|200px|Pieter Goemans with Hearts of Soul Pieter Goemans (1925-2000) was a Dutch composer, probably best known for having written the classic song "Aan de Amsterdamse grachten". Biography
popularity: 2
followers: 47
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x09d0898bce121ba6c825855b37a28aaa38b62d394b2d121f8226d6a9aea38792
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e4c3cf79-e66a-4d20-92e1-8549db5a2d1c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e4c3cf79-e66a-4d20-92e1-8549db5a2d1c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e4c3cf79-e66a-4d20-92e1-8549db5a2d1c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x09d0898bce121ba6c825855b37a28aaa38b62d394b2d121f8226d6a9aea38792","name":"Pieter Goemans","registered_at":"2026-06-21T08:16:17Z","symbol":"NIM1868699","token_address":"0x34b8c6b69baa6ba752cb268494997b93d74bf91b","type":"artist","uuid":"e4c3cf79-e66a-4d20-92e1-8549db5a2d1c"}
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 0x09d0898bce121ba6c825855b37a28aaa38b62d394b2d121f8226d6a9aea38792. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4c3cf79-e66a-4d20-92e1-8549db5a2d1c.json and https://artists.proofprofile.net/proofs/artist/e4c3cf79-e66a-4d20-92e1-8549db5a2d1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0x09d0898bce121ba6c825855b37a28aaa38b62d394b2d121f8226d6a9aea38792","name":"Pieter Goemans","registered_at":"2026-06-21T08:16:17Z","symbol":"NIM1868699","token_address":"0x34b8c6b69baa6ba752cb268494997b93d74bf91b","type":"artist","uuid":"e4c3cf79-e66a-4d20-92e1-8549db5a2d1c"}