花沢 加絵
type: MusicGroup
popularity: 13
followers: 133
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4bcdab5f29eb904af664a4f0082ed5e7e68f409e63fc166ec38908f3d7fc7da9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953704
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953704
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/780fd463-c19b-4db4-8339-c354a4584bb2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/780fd463-c19b-4db4-8339-c354a4584bb2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/780fd463-c19b-4db4-8339-c354a4584bb2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T22:58:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4bcdab5f29eb904af664a4f0082ed5e7e68f409e63fc166ec38908f3d7fc7da9","name":"花沢 加絵","registered_at":"2026-06-14T17:07:35Z","symbol":"NIM0519630","token_address":"0xb54ecca0bfff8e6294fdffcd6c373a60d2cbd3bc","type":"artist","uuid":"780fd463-c19b-4db4-8339-c354a4584bb2"}
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 0x4bcdab5f29eb904af664a4f0082ed5e7e68f409e63fc166ec38908f3d7fc7da9. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/780fd463-c19b-4db4-8339-c354a4584bb2.json and https://artists.proofprofile.net/proofs/artist/780fd463-c19b-4db4-8339-c354a4584bb2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
  text: {"copyright_id":"0x4bcdab5f29eb904af664a4f0082ed5e7e68f409e63fc166ec38908f3d7fc7da9","name":"花沢 加絵","registered_at":"2026-06-14T17:07:35Z","symbol":"NIM0519630","token_address":"0xb54ecca0bfff8e6294fdffcd6c373a60d2cbd3bc","type":"artist","uuid":"780fd463-c19b-4db4-8339-c354a4584bb2"}