王桂兰
type: MusicGroup
popularity: 2
followers: 33
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa503efa7f5c3e29abc1f2cda57a39cba4532ce63373255efb1454cb704c461da
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953886
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953886
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ba531f9-c304-41d0-a311-312e027fbc39.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ba531f9-c304-41d0-a311-312e027fbc39.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0ba531f9-c304-41d0-a311-312e027fbc39
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:37:45Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa503efa7f5c3e29abc1f2cda57a39cba4532ce63373255efb1454cb704c461da","name":"王桂兰","registered_at":"2026-06-15T17:28:15Z","symbol":"NIM0779915","token_address":"0x2ba7e63197695fb951528e1c0d247012ab7d56af","type":"artist","uuid":"0ba531f9-c304-41d0-a311-312e027fbc39"}
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 0xa503efa7f5c3e29abc1f2cda57a39cba4532ce63373255efb1454cb704c461da. Chain 2 (Bitcoin): anchored in block 953886 (2026-06-16T04:37:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ba531f9-c304-41d0-a311-312e027fbc39.json and https://artists.proofprofile.net/proofs/artist/0ba531f9-c304-41d0-a311-312e027fbc39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:37:45Z
  text: {"copyright_id":"0xa503efa7f5c3e29abc1f2cda57a39cba4532ce63373255efb1454cb704c461da","name":"王桂兰","registered_at":"2026-06-15T17:28:15Z","symbol":"NIM0779915","token_address":"0x2ba7e63197695fb951528e1c0d247012ab7d56af","type":"artist","uuid":"0ba531f9-c304-41d0-a311-312e027fbc39"}
album: 二妹妹
  type: MusicAlbum
  date published: 2025-01-02