Sergei Lemeshev
type: MusicGroup
genre: opera
description: Sergei Yakovlevich Lemeshev (; – 27 June 1977) was a Soviet and Russian opera singer and director. People's Artist of the USSR (1950). Biography Early life and career Lemeshev was born into a peasa
popularity: 14
followers: 2039
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x51b0057117b5d92cf8be060df68400785457404e7f5e9dc9f9dbd08914b621f7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953842
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953842
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/edefa963-e8b7-484d-993f-bfa8780ba34f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/edefa963-e8b7-484d-993f-bfa8780ba34f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/edefa963-e8b7-484d-993f-bfa8780ba34f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:22:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x51b0057117b5d92cf8be060df68400785457404e7f5e9dc9f9dbd08914b621f7","name":"Sergei Lemeshev","registered_at":"2026-06-15T05:25:47Z","symbol":"NIM0695788","token_address":"0xcc82e02e490c39ae6c6c542ab1fbc151b562c376","type":"artist","uuid":"edefa963-e8b7-484d-993f-bfa8780ba34f"}
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 0x51b0057117b5d92cf8be060df68400785457404e7f5e9dc9f9dbd08914b621f7. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edefa963-e8b7-484d-993f-bfa8780ba34f.json and https://artists.proofprofile.net/proofs/artist/edefa963-e8b7-484d-993f-bfa8780ba34f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:22:30Z
  text: {"copyright_id":"0x51b0057117b5d92cf8be060df68400785457404e7f5e9dc9f9dbd08914b621f7","name":"Sergei Lemeshev","registered_at":"2026-06-15T05:25:47Z","symbol":"NIM0695788","token_address":"0xcc82e02e490c39ae6c6c542ab1fbc151b562c376","type":"artist","uuid":"edefa963-e8b7-484d-993f-bfa8780ba34f"}
album: Auber: Fra diavolo (Sung in Russian) [Live]
  type: MusicAlbum
  date published: 2016-03-01