單反
type: MusicGroup
popularity: 21
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc67547ac355a66494b29ac2801641439221b40138a34078c4cb9275f149bdab4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a1b04b20-4150-41c9-a60e-b40652924dc7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a1b04b20-4150-41c9-a60e-b40652924dc7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a1b04b20-4150-41c9-a60e-b40652924dc7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc67547ac355a66494b29ac2801641439221b40138a34078c4cb9275f149bdab4","name":"單反","registered_at":"2026-06-12T06:01:25Z","symbol":"NIM0208276","token_address":"0x6003e912add579e7eeef9a4c85a28891d9af8e7b","type":"artist","uuid":"a1b04b20-4150-41c9-a60e-b40652924dc7"}
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 0xc67547ac355a66494b29ac2801641439221b40138a34078c4cb9275f149bdab4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1b04b20-4150-41c9-a60e-b40652924dc7.json and https://artists.proofprofile.net/proofs/artist/a1b04b20-4150-41c9-a60e-b40652924dc7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xc67547ac355a66494b29ac2801641439221b40138a34078c4cb9275f149bdab4","name":"單反","registered_at":"2026-06-12T06:01:25Z","symbol":"NIM0208276","token_address":"0x6003e912add579e7eeef9a4c85a28891d9af8e7b","type":"artist","uuid":"a1b04b20-4150-41c9-a60e-b40652924dc7"}
album: 彼岸的希望
  type: MusicAlbum
  date published: 2025-03-18