Ayumi Kouketsu
type: MusicGroup
popularity: 2
followers: 125
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd5eca2f01ab32264e1332e488f150d4252df4b9755e0d102a2b5932a403a71bd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/261ab49c-ef15-497e-8e07-7cb59bbaebda.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/261ab49c-ef15-497e-8e07-7cb59bbaebda.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/261ab49c-ef15-497e-8e07-7cb59bbaebda
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd5eca2f01ab32264e1332e488f150d4252df4b9755e0d102a2b5932a403a71bd","name":"Ayumi Kouketsu","registered_at":"2026-06-16T02:44:05Z","symbol":"NIM0912558","token_address":"0x2191af9344a979626ef39e59922ea8f6914516d4","type":"artist","uuid":"261ab49c-ef15-497e-8e07-7cb59bbaebda"}
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 0xd5eca2f01ab32264e1332e488f150d4252df4b9755e0d102a2b5932a403a71bd. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/261ab49c-ef15-497e-8e07-7cb59bbaebda.json and https://artists.proofprofile.net/proofs/artist/261ab49c-ef15-497e-8e07-7cb59bbaebda.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xd5eca2f01ab32264e1332e488f150d4252df4b9755e0d102a2b5932a403a71bd","name":"Ayumi Kouketsu","registered_at":"2026-06-16T02:44:05Z","symbol":"NIM0912558","token_address":"0x2191af9344a979626ef39e59922ea8f6914516d4","type":"artist","uuid":"261ab49c-ef15-497e-8e07-7cb59bbaebda"}
album: Brooklyn Purple
  type: MusicAlbum
  date published: 2017-11-01
album: Struttin'
  type: MusicAlbum
  date published: 2017-11-01
album: Balladist
  type: MusicAlbum
  date published: 2017-11-01
album: Rainbow Tales
  type: MusicAlbum
  date published: 2017-11-01
album: Art
  type: MusicAlbum
  date published: 2017-11-01
album: Daybreak
  type: MusicAlbum
  date published: 2017-11-01
album: O Pato
  type: MusicAlbum
  date published: 2018-10-17