つぐみ
type: MusicGroup
popularity: 11
followers: 24
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9d17d739e22c5893021a485414f1998992268b6f5890e25d6284b6cfb20cfed3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953791
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953791
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de92818c-1d27-4383-bffa-56dc9bdba36f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de92818c-1d27-4383-bffa-56dc9bdba36f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/de92818c-1d27-4383-bffa-56dc9bdba36f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T13:40:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9d17d739e22c5893021a485414f1998992268b6f5890e25d6284b6cfb20cfed3","name":"つぐみ","registered_at":"2026-06-15T03:54:31Z","symbol":"NIM0674007","token_address":"0x493e030085a918fd47650ddef835ac356b7004ba","type":"artist","uuid":"de92818c-1d27-4383-bffa-56dc9bdba36f"}
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 0x9d17d739e22c5893021a485414f1998992268b6f5890e25d6284b6cfb20cfed3. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de92818c-1d27-4383-bffa-56dc9bdba36f.json and https://artists.proofprofile.net/proofs/artist/de92818c-1d27-4383-bffa-56dc9bdba36f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T13:40:30Z
  text: {"copyright_id":"0x9d17d739e22c5893021a485414f1998992268b6f5890e25d6284b6cfb20cfed3","name":"つぐみ","registered_at":"2026-06-15T03:54:31Z","symbol":"NIM0674007","token_address":"0x493e030085a918fd47650ddef835ac356b7004ba","type":"artist","uuid":"de92818c-1d27-4383-bffa-56dc9bdba36f"}