Marthe Declerck
type: MusicGroup
popularity: 2
followers: 22
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb509f668e751c910223eb280892c711a758ef1748eb49ec15ae450fe0de60f75
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953954
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953954
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/25926063-7360-4370-ad4a-66fb06dd42be.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/25926063-7360-4370-ad4a-66fb06dd42be.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/25926063-7360-4370-ad4a-66fb06dd42be
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:18:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb509f668e751c910223eb280892c711a758ef1748eb49ec15ae450fe0de60f75","name":"Marthe Declerck","registered_at":"2026-06-16T02:38:45Z","symbol":"NIM0911282","token_address":"0xe6cf2a3fd30bf7e7df2353c656afbd390247f0a5","type":"artist","uuid":"25926063-7360-4370-ad4a-66fb06dd42be"}
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 0xb509f668e751c910223eb280892c711a758ef1748eb49ec15ae450fe0de60f75. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25926063-7360-4370-ad4a-66fb06dd42be.json and https://artists.proofprofile.net/proofs/artist/25926063-7360-4370-ad4a-66fb06dd42be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:18:37Z
  text: {"copyright_id":"0xb509f668e751c910223eb280892c711a758ef1748eb49ec15ae450fe0de60f75","name":"Marthe Declerck","registered_at":"2026-06-16T02:38:45Z","symbol":"NIM0911282","token_address":"0xe6cf2a3fd30bf7e7df2353c656afbd390247f0a5","type":"artist","uuid":"25926063-7360-4370-ad4a-66fb06dd42be"}
album: On a Bench Under the Trees
  type: MusicAlbum
  date published: 2025-06-03