糸山佐奈恵
type: MusicGroup
popularity: 12
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbac7a41d1ed9a6cfdce876c3a9e9cafd25ab09e376055df9a4934b2ea5de7179
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953697
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953697
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/70c72f95-6715-465d-9845-31a5a158fb58.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/70c72f95-6715-465d-9845-31a5a158fb58.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/70c72f95-6715-465d-9845-31a5a158fb58
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:49:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbac7a41d1ed9a6cfdce876c3a9e9cafd25ab09e376055df9a4934b2ea5de7179","name":"糸山佐奈恵","registered_at":"2026-06-14T16:19:14Z","symbol":"NIM0508091","token_address":"0x4aaab9c5be59be163333a2811c861f0e010f1541","type":"artist","uuid":"70c72f95-6715-465d-9845-31a5a158fb58"}
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 0xbac7a41d1ed9a6cfdce876c3a9e9cafd25ab09e376055df9a4934b2ea5de7179. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70c72f95-6715-465d-9845-31a5a158fb58.json and https://artists.proofprofile.net/proofs/artist/70c72f95-6715-465d-9845-31a5a158fb58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0xbac7a41d1ed9a6cfdce876c3a9e9cafd25ab09e376055df9a4934b2ea5de7179","name":"糸山佐奈恵","registered_at":"2026-06-14T16:19:14Z","symbol":"NIM0508091","token_address":"0x4aaab9c5be59be163333a2811c861f0e010f1541","type":"artist","uuid":"70c72f95-6715-465d-9845-31a5a158fb58"}