マル
type: MusicGroup
popularity: 3
followers: 13
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6d693a1f8f30be2a09667cc0126b22ec9c7d5a7176772c1f13efe7e206cb1108
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9d9c49c-0e6b-481a-8dae-85f0930256f2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f9d9c49c-0e6b-481a-8dae-85f0930256f2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f9d9c49c-0e6b-481a-8dae-85f0930256f2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6d693a1f8f30be2a09667cc0126b22ec9c7d5a7176772c1f13efe7e206cb1108","name":"マル","registered_at":"2026-06-21T16:39:36Z","symbol":"NIM1976020","token_address":"0xc91613b9c63841c04a61c2a14b3e7bf5aae4e16e","type":"artist","uuid":"f9d9c49c-0e6b-481a-8dae-85f0930256f2"}
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 0x6d693a1f8f30be2a09667cc0126b22ec9c7d5a7176772c1f13efe7e206cb1108. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9d9c49c-0e6b-481a-8dae-85f0930256f2.json and https://artists.proofprofile.net/proofs/artist/f9d9c49c-0e6b-481a-8dae-85f0930256f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x6d693a1f8f30be2a09667cc0126b22ec9c7d5a7176772c1f13efe7e206cb1108","name":"マル","registered_at":"2026-06-21T16:39:36Z","symbol":"NIM1976020","token_address":"0xc91613b9c63841c04a61c2a14b3e7bf5aae4e16e","type":"artist","uuid":"f9d9c49c-0e6b-481a-8dae-85f0930256f2"}
album: 赤ちゃんが眠るやすらぎのアンビエンス音楽
  type: MusicAlbum
  date published: 2024-05-03
album: To my dear child
  type: MusicAlbum
  date published: 2024-05-29