Lambert
type: MusicGroup
genre: chinese hip hop
genre: chinese r&b
genre: c-pop
description: Lambert may refer to People Lambert (name), a given name and surname Johann Heinrich Lambert, polymath who popularized the hyperbolic functions in trigonometry and discovered Lambert's cosine law in
popularity: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x19823a7f412ea0f03b04bff44b81b3c010795c829610a9094f6f276fead2c734
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e753cf98-9624-46a9-a6c3-2e5fe6bb1728.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e753cf98-9624-46a9-a6c3-2e5fe6bb1728.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e753cf98-9624-46a9-a6c3-2e5fe6bb1728
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
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 0x19823a7f412ea0f03b04bff44b81b3c010795c829610a9094f6f276fead2c734. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e753cf98-9624-46a9-a6c3-2e5fe6bb1728.json and https://artists.proofprofile.net/proofs/artist/e753cf98-9624-46a9-a6c3-2e5fe6bb1728.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
album: Oldies Mix: Cloudburst
  type: MusicAlbum
  date published: 2021-05-20
album: 北京昨夜下了雪
  type: MusicAlbum
  date published: 2021-12-03
album: 北京昨夜下了雪
  type: MusicAlbum
  date published: 2021-12-03