Kengo Saito
type: MusicGroup
popularity: 2
followers: 221
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x191231ef3f7e0570d6797ff7f55c6510df965306d035e35278e06a7e2d1fcbc4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f8ae2ee4-7c56-4b89-ac04-d710973c4417.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f8ae2ee4-7c56-4b89-ac04-d710973c4417.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f8ae2ee4-7c56-4b89-ac04-d710973c4417
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x191231ef3f7e0570d6797ff7f55c6510df965306d035e35278e06a7e2d1fcbc4","name":"Kengo Saito","registered_at":"2026-06-21T16:14:39Z","symbol":"NIM1969859","token_address":"0x8b5861ba343bed69fe3d3f608137470a0b11b2ba","type":"artist","uuid":"f8ae2ee4-7c56-4b89-ac04-d710973c4417"}
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 0x191231ef3f7e0570d6797ff7f55c6510df965306d035e35278e06a7e2d1fcbc4. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8ae2ee4-7c56-4b89-ac04-d710973c4417.json and https://artists.proofprofile.net/proofs/artist/f8ae2ee4-7c56-4b89-ac04-d710973c4417.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:16:07Z
  text: {"copyright_id":"0x191231ef3f7e0570d6797ff7f55c6510df965306d035e35278e06a7e2d1fcbc4","name":"Kengo Saito","registered_at":"2026-06-21T16:14:39Z","symbol":"NIM1969859","token_address":"0x8b5861ba343bed69fe3d3f608137470a0b11b2ba","type":"artist","uuid":"f8ae2ee4-7c56-4b89-ac04-d710973c4417"}
album: Japanistan
  type: MusicAlbum
  date published: 2016-05-27
album: Japanistan
  type: MusicAlbum
  date published: 2016-05-27
album: Douce Errance
  type: MusicAlbum
  date published: 2024-11-22