Valentin Larsen
type: MusicGroup
popularity: 7
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8ccd9dc3e7a3cd3222bc620f0b015b8b7e841fd802385ff8f52d917d036a1c62
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d11fdccf-2c03-4e62-b8e8-5607af8d8017.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d11fdccf-2c03-4e62-b8e8-5607af8d8017.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d11fdccf-2c03-4e62-b8e8-5607af8d8017
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8ccd9dc3e7a3cd3222bc620f0b015b8b7e841fd802385ff8f52d917d036a1c62","name":"Valentin Larsen","registered_at":"2026-06-21T00:55:05Z","symbol":"NIM1768493","token_address":"0x9e750ff4e4b3ac63c61caf13b3ef5be9b29c0357","type":"artist","uuid":"d11fdccf-2c03-4e62-b8e8-5607af8d8017"}
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 0x8ccd9dc3e7a3cd3222bc620f0b015b8b7e841fd802385ff8f52d917d036a1c62. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d11fdccf-2c03-4e62-b8e8-5607af8d8017.json and https://artists.proofprofile.net/proofs/artist/d11fdccf-2c03-4e62-b8e8-5607af8d8017.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x8ccd9dc3e7a3cd3222bc620f0b015b8b7e841fd802385ff8f52d917d036a1c62","name":"Valentin Larsen","registered_at":"2026-06-21T00:55:05Z","symbol":"NIM1768493","token_address":"0x9e750ff4e4b3ac63c61caf13b3ef5be9b29c0357","type":"artist","uuid":"d11fdccf-2c03-4e62-b8e8-5607af8d8017"}
album: Somebody's Watching Me
  type: MusicAlbum
  date published: 2023-03-03