福島ノア(CV：佐藤日向)
type: MusicGroup
popularity: 12
followers: 13
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeb5a3e7930cd1e65111516078837b7dcc60b27a313137bf73dd79e62d80616ab
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953657
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953657
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4fa6c056-cdb3-4384-b32c-da8c6f45cee9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4fa6c056-cdb3-4384-b32c-da8c6f45cee9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4fa6c056-cdb3-4384-b32c-da8c6f45cee9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T16:43:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xeb5a3e7930cd1e65111516078837b7dcc60b27a313137bf73dd79e62d80616ab","name":"福島ノア(CV：佐藤日向)","registered_at":"2026-06-14T12:50:02Z","symbol":"NIM0458159","token_address":"0x4ed1e01b7ed27b452fae3cd2f47c05808416d6df","type":"artist","uuid":"4fa6c056-cdb3-4384-b32c-da8c6f45cee9"}
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 0xeb5a3e7930cd1e65111516078837b7dcc60b27a313137bf73dd79e62d80616ab. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fa6c056-cdb3-4384-b32c-da8c6f45cee9.json and https://artists.proofprofile.net/proofs/artist/4fa6c056-cdb3-4384-b32c-da8c6f45cee9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T16:43:25Z
  text: {"copyright_id":"0xeb5a3e7930cd1e65111516078837b7dcc60b27a313137bf73dd79e62d80616ab","name":"福島ノア(CV：佐藤日向)","registered_at":"2026-06-14T12:50:02Z","symbol":"NIM0458159","token_address":"0x4ed1e01b7ed27b452fae3cd2f47c05808416d6df","type":"artist","uuid":"4fa6c056-cdb3-4384-b32c-da8c6f45cee9"}