Фирстов
type: MusicGroup
popularity: 5
followers: 139
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbddb3fdf3bdc7588dac275ced245c530e11cf5da09348f2978bea5f4f3849592
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/8f540dbc-5709-4fe1-a77e-e114d7f7c0d8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8f540dbc-5709-4fe1-a77e-e114d7f7c0d8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8f540dbc-5709-4fe1-a77e-e114d7f7c0d8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbddb3fdf3bdc7588dac275ced245c530e11cf5da09348f2978bea5f4f3849592","name":"Фирстов","registered_at":"2026-06-17T15:41:03Z","symbol":"NIM1441468","token_address":"0x9e51b71bebffd581c4e5856c16e14e5e04c24680","type":"artist","uuid":"8f540dbc-5709-4fe1-a77e-e114d7f7c0d8"}
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 0xbddb3fdf3bdc7588dac275ced245c530e11cf5da09348f2978bea5f4f3849592. 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/8f540dbc-5709-4fe1-a77e-e114d7f7c0d8.json and https://artists.proofprofile.net/proofs/artist/8f540dbc-5709-4fe1-a77e-e114d7f7c0d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xbddb3fdf3bdc7588dac275ced245c530e11cf5da09348f2978bea5f4f3849592","name":"Фирстов","registered_at":"2026-06-17T15:41:03Z","symbol":"NIM1441468","token_address":"0x9e51b71bebffd581c4e5856c16e14e5e04c24680","type":"artist","uuid":"8f540dbc-5709-4fe1-a77e-e114d7f7c0d8"}
album: Вижу глаза
  type: MusicAlbum
  date published: 2021-07-07
  track: Вижу глаза
    type: MusicRecording
    duration: PT2M21S
    duration ms: 141756
    explicit: false
    by artist: Фирстов
    in album: Вижу глаза
      type: MusicAlbum
      date published: 2021-07-07
    isrc code: SMRUS0068785
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T09:53:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd205b809f284ed535dfcf23284cc893efc42ead9a6f5782c0dd0907bcea0c066
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958276
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958276
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SMRUS0068785
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T10:20:17Z
    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 0xd205b809f284ed535dfcf23284cc893efc42ead9a6f5782c0dd0907bcea0c066. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SMRUS0068785.
      date published: 2026-07-16T10:20:17Z
    audio: Вижу глаза
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 154.922
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.678
      additional property: Energy
        type: PropertyValue
        value: 0.517
      additional property: Speechiness
        type: PropertyValue
        value: 0.151
      additional property: Acousticness
        type: PropertyValue
        value: 0.02
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.105
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.276
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.346
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Мечта
  type: MusicAlbum
  date published: 2021-08-17
album: Научите любить
  type: MusicAlbum
  date published: 2024-01-24
album: Птица вольная
  type: MusicAlbum
  date published: 2024-02-16