Alexander Kniazev
type: MusicGroup
description: thumb|Alexandre Kniazev and Plamena Mangova, during la Folle Journée, 2009. Alexandre Alexandrovitch Kniazev () (born 26 April 1961 in Moscow) is a Russian cellist and organist. He was named best mus
popularity: 20
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfd61dc84bb6ced4a509ff119bd49656fb3c9cb9282a50d1ffe49015f0e961ca8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953681
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953681
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/64dd409b-5888-4e90-b55e-e6cc06638547.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/64dd409b-5888-4e90-b55e-e6cc06638547.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/64dd409b-5888-4e90-b55e-e6cc06638547
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:31:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfd61dc84bb6ced4a509ff119bd49656fb3c9cb9282a50d1ffe49015f0e961ca8","name":"Alexander Kniazev","registered_at":"2026-06-14T15:01:13Z","symbol":"NIM0489477","token_address":"0xd5f0006d53d63688fd8730d6c38e84fffbcb1aa2","type":"artist","uuid":"64dd409b-5888-4e90-b55e-e6cc06638547"}
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 0xfd61dc84bb6ced4a509ff119bd49656fb3c9cb9282a50d1ffe49015f0e961ca8. Chain 2 (Bitcoin): anchored in block 953681 (2026-06-14T19:31:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64dd409b-5888-4e90-b55e-e6cc06638547.json and https://artists.proofprofile.net/proofs/artist/64dd409b-5888-4e90-b55e-e6cc06638547.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T19:31:23Z
  text: {"copyright_id":"0xfd61dc84bb6ced4a509ff119bd49656fb3c9cb9282a50d1ffe49015f0e961ca8","name":"Alexander Kniazev","registered_at":"2026-06-14T15:01:13Z","symbol":"NIM0489477","token_address":"0xd5f0006d53d63688fd8730d6c38e84fffbcb1aa2","type":"artist","uuid":"64dd409b-5888-4e90-b55e-e6cc06638547"}