薛凱琪 duet with 方大同
type: MusicGroup
genre: cantopop
genre: taiwanese pop
popularity: 23
followers: 136
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1d5d5e09b037a35cabf9a310db8514f925fae3590faf13aa82234e2dcb886c8b
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/968dcfe3-64f1-418a-856d-4846435cdb20.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/968dcfe3-64f1-418a-856d-4846435cdb20.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/968dcfe3-64f1-418a-856d-4846435cdb20
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1d5d5e09b037a35cabf9a310db8514f925fae3590faf13aa82234e2dcb886c8b","name":"薛凱琪 duet with 方大同","registered_at":"2026-06-12T18:11:55Z","symbol":"NIM0332437","token_address":"0xd27c51d3d94624b761b66dae974fac30d5fd8b52","type":"artist","uuid":"968dcfe3-64f1-418a-856d-4846435cdb20"}
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 0x1d5d5e09b037a35cabf9a310db8514f925fae3590faf13aa82234e2dcb886c8b. 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/968dcfe3-64f1-418a-856d-4846435cdb20.json and https://artists.proofprofile.net/proofs/artist/968dcfe3-64f1-418a-856d-4846435cdb20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x1d5d5e09b037a35cabf9a310db8514f925fae3590faf13aa82234e2dcb886c8b","name":"薛凱琪 duet with 方大同","registered_at":"2026-06-12T18:11:55Z","symbol":"NIM0332437","token_address":"0xd27c51d3d94624b761b66dae974fac30d5fd8b52","type":"artist","uuid":"968dcfe3-64f1-418a-856d-4846435cdb20"}