今泉佑唯
type: MusicGroup
popularity: 2
followers: 800
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x18b030fa5b1f6fb760b0f0008dbd42a98d0b3cd7279896df873d850764e6ce92
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6be3c818-a0db-4805-b722-c221812d20aa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6be3c818-a0db-4805-b722-c221812d20aa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6be3c818-a0db-4805-b722-c221812d20aa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x18b030fa5b1f6fb760b0f0008dbd42a98d0b3cd7279896df873d850764e6ce92","name":"今泉佑唯","registered_at":"2026-06-17T03:15:47Z","symbol":"NIM1263768","token_address":"0xfc93c94111e83bf04c3f273aee6a66d85739d0ba","type":"artist","uuid":"6be3c818-a0db-4805-b722-c221812d20aa"}
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 0x18b030fa5b1f6fb760b0f0008dbd42a98d0b3cd7279896df873d850764e6ce92. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6be3c818-a0db-4805-b722-c221812d20aa.json and https://artists.proofprofile.net/proofs/artist/6be3c818-a0db-4805-b722-c221812d20aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x18b030fa5b1f6fb760b0f0008dbd42a98d0b3cd7279896df873d850764e6ce92","name":"今泉佑唯","registered_at":"2026-06-17T03:15:47Z","symbol":"NIM1263768","token_address":"0xfc93c94111e83bf04c3f273aee6a66d85739d0ba","type":"artist","uuid":"6be3c818-a0db-4805-b722-c221812d20aa"}
album: 修羅雪
  type: MusicAlbum
  date published: 2021-11-23
album: 雨が雪に変わる / 真紅の花
  type: MusicAlbum
  date published: 2022-04-08