KUROFUNE
type: MusicGroup
popularity: 7
followers: 847
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x74a89be77e94013e001e8198c61b4b184d630f14bfc051c42f6b79ee0b89dea1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954125
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954125
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c00e0ff-ea9c-46e5-975b-a8c8ac73d9d6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c00e0ff-ea9c-46e5-975b-a8c8ac73d9d6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7c00e0ff-ea9c-46e5-975b-a8c8ac73d9d6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T18:27:28Z
additional property: OTSCanonicalRecord
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 0x74a89be77e94013e001e8198c61b4b184d630f14bfc051c42f6b79ee0b89dea1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c00e0ff-ea9c-46e5-975b-a8c8ac73d9d6.json and https://artists.proofprofile.net/proofs/artist/7c00e0ff-ea9c-46e5-975b-a8c8ac73d9d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:07:14Z
album: ARRIVAL -KUROFUNE Sail Away- / 君はミ・アモール
  type: MusicAlbum
  date published: 2016-11-23
album: FACE 2 FAITH
  type: MusicAlbum
  date published: 2017-07-26
album: Future Voyager / Whole New World
  type: MusicAlbum
  date published: 2017-11-22
album: OVER THE SEVEN SEAS
  type: MusicAlbum
  date published: 2018-07-25