北笙
type: MusicGroup
genre: chinese r&b
genre: c-pop
popularity: 2
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x977bbe4b55c550eba55515cdd26789858cd373b48c1bf516a2e1563bc4878b90
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954025
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954025
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/391c9194-6722-4be8-bd28-1588836c1774.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/391c9194-6722-4be8-bd28-1588836c1774.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/391c9194-6722-4be8-bd28-1588836c1774
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:32:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x977bbe4b55c550eba55515cdd26789858cd373b48c1bf516a2e1563bc4878b90","name":"北笙","registered_at":"2026-06-16T09:26:58Z","symbol":"NIM1008764","token_address":"0x42332b27a1d48dc51015e0d5315af96e1d5244f6","type":"artist","uuid":"391c9194-6722-4be8-bd28-1588836c1774"}
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 0x977bbe4b55c550eba55515cdd26789858cd373b48c1bf516a2e1563bc4878b90. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/391c9194-6722-4be8-bd28-1588836c1774.json and https://artists.proofprofile.net/proofs/artist/391c9194-6722-4be8-bd28-1588836c1774.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x977bbe4b55c550eba55515cdd26789858cd373b48c1bf516a2e1563bc4878b90","name":"北笙","registered_at":"2026-06-16T09:26:58Z","symbol":"NIM1008764","token_address":"0x42332b27a1d48dc51015e0d5315af96e1d5244f6","type":"artist","uuid":"391c9194-6722-4be8-bd28-1588836c1774"}
album: 心中的旅途
  type: MusicAlbum
  date published: 2024-07-29