Frans Heemskerk
type: MusicGroup
popularity: 17
followers: 121
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb3f9b6aaa753d212f82b68d1b174ee8b1afdaa25293e31e17e383239f442c8c6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a16b818c-b1a9-4aa1-9f58-0fc26196657f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a16b818c-b1a9-4aa1-9f58-0fc26196657f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a16b818c-b1a9-4aa1-9f58-0fc26196657f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T04:47:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb3f9b6aaa753d212f82b68d1b174ee8b1afdaa25293e31e17e383239f442c8c6","name":"Frans Heemskerk","registered_at":"2026-06-14T21:32:20Z","symbol":"NIM0582731","token_address":"0x7cbefb03324798464297a9f65e6b1303e38c35b1","type":"artist","uuid":"a16b818c-b1a9-4aa1-9f58-0fc26196657f"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f9b6aaa753d212f82b68d1b174ee8b1afdaa25293e31e17e383239f442c8c6. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a16b818c-b1a9-4aa1-9f58-0fc26196657f.json and https://artists.proofprofile.net/proofs/artist/a16b818c-b1a9-4aa1-9f58-0fc26196657f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:50:11Z
  text: {"copyright_id":"0xb3f9b6aaa753d212f82b68d1b174ee8b1afdaa25293e31e17e383239f442c8c6","name":"Frans Heemskerk","registered_at":"2026-06-14T21:32:20Z","symbol":"NIM0582731","token_address":"0x7cbefb03324798464297a9f65e6b1303e38c35b1","type":"artist","uuid":"a16b818c-b1a9-4aa1-9f58-0fc26196657f"}
album: Persona
  type: MusicAlbum
  date published: 2014-11-13