シュヴァルグラン (CV. 夏吉ゆうこ)
type: MusicGroup
popularity: 28
followers: 720
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb2bc9020bc3ca71c81f4ee76b1e2d9a18e158d988b10429f213b465be1c69968
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5885df0f-b354-4a38-a54c-63d525757d16.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5885df0f-b354-4a38-a54c-63d525757d16.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5885df0f-b354-4a38-a54c-63d525757d16
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb2bc9020bc3ca71c81f4ee76b1e2d9a18e158d988b10429f213b465be1c69968","name":"シュヴァルグラン (CV. 夏吉ゆうこ)","registered_at":"2026-06-11T21:25:32Z","symbol":"NIM0116375","token_address":"0xd803709d6ed15483a5199ab1d58a242a5fc90eb2","type":"artist","uuid":"5885df0f-b354-4a38-a54c-63d525757d16"}
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 0xb2bc9020bc3ca71c81f4ee76b1e2d9a18e158d988b10429f213b465be1c69968. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5885df0f-b354-4a38-a54c-63d525757d16.json and https://artists.proofprofile.net/proofs/artist/5885df0f-b354-4a38-a54c-63d525757d16.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xb2bc9020bc3ca71c81f4ee76b1e2d9a18e158d988b10429f213b465be1c69968","name":"シュヴァルグラン (CV. 夏吉ゆうこ)","registered_at":"2026-06-11T21:25:32Z","symbol":"NIM0116375","token_address":"0xd803709d6ed15483a5199ab1d58a242a5fc90eb2","type":"artist","uuid":"5885df0f-b354-4a38-a54c-63d525757d16"}
album: 光の後ろ姿
  type: MusicAlbum
  date published: 2023-12-22