大澤秀坪
type: MusicGroup
genre: choral
popularity: 8
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfeac3dd679ab8a32b02c0d459733c7c86255b913579aaef466ed79c0b14148fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954014
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954014
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2cde1b21-22c6-4559-9c27-e27ba212169b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2cde1b21-22c6-4559-9c27-e27ba212169b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2cde1b21-22c6-4559-9c27-e27ba212169b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T22:46:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfeac3dd679ab8a32b02c0d459733c7c86255b913579aaef466ed79c0b14148fd","name":"大澤秀坪","registered_at":"2026-06-16T05:08:24Z","symbol":"NIM0947029","token_address":"0x6250e318d412b780eae063868842cb65b5ce7360","type":"artist","uuid":"2cde1b21-22c6-4559-9c27-e27ba212169b"}
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 0xfeac3dd679ab8a32b02c0d459733c7c86255b913579aaef466ed79c0b14148fd. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2cde1b21-22c6-4559-9c27-e27ba212169b.json and https://artists.proofprofile.net/proofs/artist/2cde1b21-22c6-4559-9c27-e27ba212169b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
  text: {"copyright_id":"0xfeac3dd679ab8a32b02c0d459733c7c86255b913579aaef466ed79c0b14148fd","name":"大澤秀坪","registered_at":"2026-06-16T05:08:24Z","symbol":"NIM0947029","token_address":"0x6250e318d412b780eae063868842cb65b5ce7360","type":"artist","uuid":"2cde1b21-22c6-4559-9c27-e27ba212169b"}