ヤスイカズマ
type: MusicGroup
popularity: 2
followers: 210
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb9d2c362312770241f7846ea19a6230ecb0f122c892503c09b64af0380c0ed45
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/89a61c46-2d45-445f-8d5a-19d1a9f8de61.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/89a61c46-2d45-445f-8d5a-19d1a9f8de61.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/89a61c46-2d45-445f-8d5a-19d1a9f8de61
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb9d2c362312770241f7846ea19a6230ecb0f122c892503c09b64af0380c0ed45","name":"ヤスイカズマ","registered_at":"2026-06-17T13:27:13Z","symbol":"NIM1409514","token_address":"0xe8906719ecc63a8931be7643a62ad0ae35f1bff6","type":"artist","uuid":"89a61c46-2d45-445f-8d5a-19d1a9f8de61"}
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 0xb9d2c362312770241f7846ea19a6230ecb0f122c892503c09b64af0380c0ed45. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89a61c46-2d45-445f-8d5a-19d1a9f8de61.json and https://artists.proofprofile.net/proofs/artist/89a61c46-2d45-445f-8d5a-19d1a9f8de61.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xb9d2c362312770241f7846ea19a6230ecb0f122c892503c09b64af0380c0ed45","name":"ヤスイカズマ","registered_at":"2026-06-17T13:27:13Z","symbol":"NIM1409514","token_address":"0xe8906719ecc63a8931be7643a62ad0ae35f1bff6","type":"artist","uuid":"89a61c46-2d45-445f-8d5a-19d1a9f8de61"}
album: fall
  type: MusicAlbum
  date published: 2023-02-02
album: 触れたとて消えるもの
  type: MusicAlbum
  date published: 2023-02-28
album: Sputnik
  type: MusicAlbum
  date published: 2023-06-07
album: reimei
  type: MusicAlbum
  date published: 2023-10-31
album: mitei
  type: MusicAlbum
  date published: 2024-11-06