Александр Цфасман
type: MusicGroup
popularity: 15
followers: 207
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfeaddd24e87438218acc91016d7a66ee3d203fce03e5ab267f8811cb01b23d62
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953768
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953768
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c1acd134-06bf-4e11-8967-ea26d4ab573c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c1acd134-06bf-4e11-8967-ea26d4ab573c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c1acd134-06bf-4e11-8967-ea26d4ab573c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T09:30:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfeaddd24e87438218acc91016d7a66ee3d203fce03e5ab267f8811cb01b23d62","name":"Александр Цфасман","registered_at":"2026-06-15T00:53:23Z","symbol":"NIM0630741","token_address":"0xe351520a53adc5e5aacef57b5973035cff9f30f6","type":"artist","uuid":"c1acd134-06bf-4e11-8967-ea26d4ab573c"}
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 0xfeaddd24e87438218acc91016d7a66ee3d203fce03e5ab267f8811cb01b23d62. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1acd134-06bf-4e11-8967-ea26d4ab573c.json and https://artists.proofprofile.net/proofs/artist/c1acd134-06bf-4e11-8967-ea26d4ab573c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:30:06Z
  text: {"copyright_id":"0xfeaddd24e87438218acc91016d7a66ee3d203fce03e5ab267f8811cb01b23d62","name":"Александр Цфасман","registered_at":"2026-06-15T00:53:23Z","symbol":"NIM0630741","token_address":"0xe351520a53adc5e5aacef57b5973035cff9f30f6","type":"artist","uuid":"c1acd134-06bf-4e11-8967-ea26d4ab573c"}
album: Музыка Александра Цфасмана
  type: MusicAlbum
  date published: 2014-04-09
album: Александр Цфасман
  type: MusicAlbum
  date published: 2014-04-15
album: Пионеры советского джаза - Александр Цфасман
  type: MusicAlbum
  date published: 2015-04-03
album: Александр Цфасман и звёзды советской эстрады
  type: MusicAlbum
  date published: 2015-04-03
album: Избранное
  type: MusicAlbum
  date published: 2015-04-03
album: Я люблю танцевать
  type: MusicAlbum
  date published: 2015-04-03