Сергей Летрих
type: MusicGroup
popularity: 13
followers: 40
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf828f0db738f20c76e39e23d2bfcd058fc1c8fdbb3ade60b268753b9d0308d0f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953596
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953596
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0b763a62-9f45-49c2-81d9-8f117a5e6b1a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0b763a62-9f45-49c2-81d9-8f117a5e6b1a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0b763a62-9f45-49c2-81d9-8f117a5e6b1a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T06:21:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf828f0db738f20c76e39e23d2bfcd058fc1c8fdbb3ade60b268753b9d0308d0f","name":"Сергей Летрих","registered_at":"2026-06-14T05:37:19Z","symbol":"NIM0354987","token_address":"0xe17cfa924b2d52c61b9e62c4138fa758d62c756b","type":"artist","uuid":"0b763a62-9f45-49c2-81d9-8f117a5e6b1a"}
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 0xf828f0db738f20c76e39e23d2bfcd058fc1c8fdbb3ade60b268753b9d0308d0f. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b763a62-9f45-49c2-81d9-8f117a5e6b1a.json and https://artists.proofprofile.net/proofs/artist/0b763a62-9f45-49c2-81d9-8f117a5e6b1a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T06:21:39Z
  text: {"copyright_id":"0xf828f0db738f20c76e39e23d2bfcd058fc1c8fdbb3ade60b268753b9d0308d0f","name":"Сергей Летрих","registered_at":"2026-06-14T05:37:19Z","symbol":"NIM0354987","token_address":"0xe17cfa924b2d52c61b9e62c4138fa758d62c756b","type":"artist","uuid":"0b763a62-9f45-49c2-81d9-8f117a5e6b1a"}
album: Уходи, отпускай
  type: MusicAlbum
  date published: 2023-06-08
album: Я не вернусь
  type: MusicAlbum
  date published: 2023-09-08
album: Я не вернусь
  type: MusicAlbum
  date published: 2023-09-08
album: Доченька моя
  type: MusicAlbum
  date published: 2024-03-01
album: Чувства
  type: MusicAlbum
  date published: 2024-05-03
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  type: MusicAlbum
  date published: 2024-06-21
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  type: MusicAlbum
  date published: 2024-08-23
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  type: MusicAlbum
  date published: 2024-10-25
album: Ты меня спасаешь
  type: MusicAlbum
  date published: 2024-11-22
album: Качели
  type: MusicAlbum
  date published: 2024-12-20
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  type: MusicAlbum
  date published: 2025-02-07
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  type: MusicAlbum
  date published: 2025-03-07
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  type: MusicAlbum
  date published: 2025-07-11