乃木坂AKB
type: MusicGroup
popularity: 5
followers: 1019
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x04a820866c7206f94a3570c00142b508f1f58cc55396ae8c385121cad89e1393
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/7545b1c5-ab08-4fe9-888b-619cd57e382f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7545b1c5-ab08-4fe9-888b-619cd57e382f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7545b1c5-ab08-4fe9-888b-619cd57e382f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x04a820866c7206f94a3570c00142b508f1f58cc55396ae8c385121cad89e1393","name":"乃木坂AKB","registered_at":"2026-06-17T06:31:16Z","symbol":"NIM1310435","token_address":"0xd895a0b834294b243793400fc47f9147b4f68e15","type":"artist","uuid":"7545b1c5-ab08-4fe9-888b-619cd57e382f"}
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 0x04a820866c7206f94a3570c00142b508f1f58cc55396ae8c385121cad89e1393. 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/7545b1c5-ab08-4fe9-888b-619cd57e382f.json and https://artists.proofprofile.net/proofs/artist/7545b1c5-ab08-4fe9-888b-619cd57e382f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x04a820866c7206f94a3570c00142b508f1f58cc55396ae8c385121cad89e1393","name":"乃木坂AKB","registered_at":"2026-06-17T06:31:16Z","symbol":"NIM1310435","token_address":"0xd895a0b834294b243793400fc47f9147b4f68e15","type":"artist","uuid":"7545b1c5-ab08-4fe9-888b-619cd57e382f"}