Marlijn van Ast
type: MusicGroup
popularity: 2
followers: 20
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8f0dea6b43520725a3dbea767e3c2fa7408b3a293b756844625429414dd6a8e8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5eb0d31d-ef58-412a-8410-68dd1950996a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5eb0d31d-ef58-412a-8410-68dd1950996a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5eb0d31d-ef58-412a-8410-68dd1950996a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8f0dea6b43520725a3dbea767e3c2fa7408b3a293b756844625429414dd6a8e8","name":"Marlijn van Ast","registered_at":"2026-06-16T22:57:21Z","symbol":"NIM1202115","token_address":"0xab1adcaf667197910411d6295bf4330091b191b8","type":"artist","uuid":"5eb0d31d-ef58-412a-8410-68dd1950996a"}
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 0x8f0dea6b43520725a3dbea767e3c2fa7408b3a293b756844625429414dd6a8e8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5eb0d31d-ef58-412a-8410-68dd1950996a.json and https://artists.proofprofile.net/proofs/artist/5eb0d31d-ef58-412a-8410-68dd1950996a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x8f0dea6b43520725a3dbea767e3c2fa7408b3a293b756844625429414dd6a8e8","name":"Marlijn van Ast","registered_at":"2026-06-16T22:57:21Z","symbol":"NIM1202115","token_address":"0xab1adcaf667197910411d6295bf4330091b191b8","type":"artist","uuid":"5eb0d31d-ef58-412a-8410-68dd1950996a"}
album: Één is te veel, duizend nooit genoeg [verslaving, verbinding, herstel (Onverkort)]
  type: MusicAlbum
  date published: 2023-04-14