Егор Цай
type: MusicGroup
popularity: 7
followers: 90
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9448a09e229bb28e28e3086970410ec3fac4ccf6e18a0ab15161571fe2abb852
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a0d5409-7dc5-4fc0-a96e-4565428393fa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a0d5409-7dc5-4fc0-a96e-4565428393fa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8a0d5409-7dc5-4fc0-a96e-4565428393fa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9448a09e229bb28e28e3086970410ec3fac4ccf6e18a0ab15161571fe2abb852","name":"Егор Цай","registered_at":"2026-06-17T13:46:20Z","symbol":"NIM1414081","token_address":"0xe563c17f5e72b9f091ddec37f6e26b300e480bb2","type":"artist","uuid":"8a0d5409-7dc5-4fc0-a96e-4565428393fa"}
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 0x9448a09e229bb28e28e3086970410ec3fac4ccf6e18a0ab15161571fe2abb852. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a0d5409-7dc5-4fc0-a96e-4565428393fa.json and https://artists.proofprofile.net/proofs/artist/8a0d5409-7dc5-4fc0-a96e-4565428393fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x9448a09e229bb28e28e3086970410ec3fac4ccf6e18a0ab15161571fe2abb852","name":"Егор Цай","registered_at":"2026-06-17T13:46:20Z","symbol":"NIM1414081","token_address":"0xe563c17f5e72b9f091ddec37f6e26b300e480bb2","type":"artist","uuid":"8a0d5409-7dc5-4fc0-a96e-4565428393fa"}
album: Твой сон
  type: MusicAlbum
  date published: 2023-06-02
album: На опустевшей станции метро
  type: MusicAlbum
  date published: 2023-11-24
album: Ты получил всё, что хотел?
  type: MusicAlbum
  date published: 2024-05-31
  track: Свободен
    type: MusicRecording
    duration: PT2M43S
    duration ms: 163333
    explicit: false
    by artist: Егор Цай
    in album: Ты получил всё, что хотел?
      type: MusicAlbum
      date published: 2024-05-31
    isrc code: FRX762478673
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T07:47:19+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4ce7a5a6fd1e18b9d34c0dd7a1d16eb66a3783d8f9540bde485d298e6928803a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762478673
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x4ce7a5a6fd1e18b9d34c0dd7a1d16eb66a3783d8f9540bde485d298e6928803a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762478673.
      date published: 2026-07-03T08:56:35Z
    audio: Свободен
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 112.033
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.577
      additional property: Energy
        type: PropertyValue
        value: 0.669
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.218
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.376
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.303
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.144
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Скоро вернёмся домой
  type: MusicAlbum
  date published: 2025-01-29