大江知久[佐久間 咲也(CV:酒井広大)]
type: MusicGroup
popularity: 5
followers: 26
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf31a22a647c71753bf6c9d03d304e8c05966e1a17248ea5f1532763f332603cd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954130
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954130
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7d44a923-3f84-49dc-93a2-0c31f495f632.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7d44a923-3f84-49dc-93a2-0c31f495f632.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7d44a923-3f84-49dc-93a2-0c31f495f632
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:07:14Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf31a22a647c71753bf6c9d03d304e8c05966e1a17248ea5f1532763f332603cd","name":"大江知久[佐久間 咲也(CV:酒井広大)]","registered_at":"2026-06-17T09:16:03Z","symbol":"NIM1349691","token_address":"0x725d7f717a5fafd71f658da2c4386d72bd00c822","type":"artist","uuid":"7d44a923-3f84-49dc-93a2-0c31f495f632"}
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 0xf31a22a647c71753bf6c9d03d304e8c05966e1a17248ea5f1532763f332603cd. 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/7d44a923-3f84-49dc-93a2-0c31f495f632.json and https://artists.proofprofile.net/proofs/artist/7d44a923-3f84-49dc-93a2-0c31f495f632.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:07:14Z
  text: {"copyright_id":"0xf31a22a647c71753bf6c9d03d304e8c05966e1a17248ea5f1532763f332603cd","name":"大江知久[佐久間 咲也(CV:酒井広大)]","registered_at":"2026-06-17T09:16:03Z","symbol":"NIM1349691","token_address":"0x725d7f717a5fafd71f658da2c4386d72bd00c822","type":"artist","uuid":"7d44a923-3f84-49dc-93a2-0c31f495f632"}