Vladislav Blazhevich
type: MusicGroup
description: Vladislav Mikhailovitch Blazhevich, (3 August 188110 April 1942) was a Soviet-era Russian composer, conductor, trombonist, and pedagogue.Kharlamov, A.G. Blazhevich: His life and work, ITA Journal, Vol
popularity: 2
followers: 60
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa27317b51840687504b703862ff38d3d8f8e55594f88996d8ec43ef14c64d304
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7894235-88e7-4611-a020-d300aa0e6482.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c7894235-88e7-4611-a020-d300aa0e6482.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c7894235-88e7-4611-a020-d300aa0e6482
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa27317b51840687504b703862ff38d3d8f8e55594f88996d8ec43ef14c64d304","name":"Vladislav Blazhevich","registered_at":"2026-06-20T21:43:26Z","symbol":"NIM1724026","token_address":"0xde848f06f165b4d4def59973ab4ac3ceca494fb1","type":"artist","uuid":"c7894235-88e7-4611-a020-d300aa0e6482"}
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 0xa27317b51840687504b703862ff38d3d8f8e55594f88996d8ec43ef14c64d304. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7894235-88e7-4611-a020-d300aa0e6482.json and https://artists.proofprofile.net/proofs/artist/c7894235-88e7-4611-a020-d300aa0e6482.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0xa27317b51840687504b703862ff38d3d8f8e55594f88996d8ec43ef14c64d304","name":"Vladislav Blazhevich","registered_at":"2026-06-20T21:43:26Z","symbol":"NIM1724026","token_address":"0xde848f06f165b4d4def59973ab4ac3ceca494fb1","type":"artist","uuid":"c7894235-88e7-4611-a020-d300aa0e6482"}
album: Blazhevich: Duet No. 1
  type: MusicAlbum
  date published: 2024-08-06