Willem Stam
type: MusicGroup
popularity: 11
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d91cea1924b08dbfc88c48ce1afae920ba1bd28901b5ae827591714d206dac6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953592
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953592
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03e63ead-e72b-433a-897b-011904b61985.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03e63ead-e72b-433a-897b-011904b61985.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/03e63ead-e72b-433a-897b-011904b61985
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T05:36:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0d91cea1924b08dbfc88c48ce1afae920ba1bd28901b5ae827591714d206dac6","name":"Willem Stam","registered_at":"2026-06-14T04:53:37Z","symbol":"NIM0344564","token_address":"0x3cfdd03e6db1148c6e4c472330048034b7d8278e","type":"artist","uuid":"03e63ead-e72b-433a-897b-011904b61985"}
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 0x0d91cea1924b08dbfc88c48ce1afae920ba1bd28901b5ae827591714d206dac6. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03e63ead-e72b-433a-897b-011904b61985.json and https://artists.proofprofile.net/proofs/artist/03e63ead-e72b-433a-897b-011904b61985.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T05:36:59Z
  text: {"copyright_id":"0x0d91cea1924b08dbfc88c48ce1afae920ba1bd28901b5ae827591714d206dac6","name":"Willem Stam","registered_at":"2026-06-14T04:53:37Z","symbol":"NIM0344564","token_address":"0x3cfdd03e6db1148c6e4c472330048034b7d8278e","type":"artist","uuid":"03e63ead-e72b-433a-897b-011904b61985"}