Leonid Antonov
type: MusicGroup
popularity: 44
followers: 1224
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ee8dfeb5ef96ea8821a9a1c80afb6f23d7a65af1df810988473dfc5bc2bb7df
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/270b276b-adf6-44e5-b8a7-26dc37d28377.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/270b276b-adf6-44e5-b8a7-26dc37d28377.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/270b276b-adf6-44e5-b8a7-26dc37d28377
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4ee8dfeb5ef96ea8821a9a1c80afb6f23d7a65af1df810988473dfc5bc2bb7df","name":"Leonid Antonov","registered_at":"2026-06-11T14:36:12Z","symbol":"NIM0050978","token_address":"0x64d93345d1eb48327b9b917bfdc1a3a6c57fbeae","type":"artist","uuid":"270b276b-adf6-44e5-b8a7-26dc37d28377"}
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 0x4ee8dfeb5ef96ea8821a9a1c80afb6f23d7a65af1df810988473dfc5bc2bb7df. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/270b276b-adf6-44e5-b8a7-26dc37d28377.json and https://artists.proofprofile.net/proofs/artist/270b276b-adf6-44e5-b8a7-26dc37d28377.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x4ee8dfeb5ef96ea8821a9a1c80afb6f23d7a65af1df810988473dfc5bc2bb7df","name":"Leonid Antonov","registered_at":"2026-06-11T14:36:12Z","symbol":"NIM0050978","token_address":"0x64d93345d1eb48327b9b917bfdc1a3a6c57fbeae","type":"artist","uuid":"270b276b-adf6-44e5-b8a7-26dc37d28377"}
album: Fragile
  type: MusicAlbum
  date published: 2021-06-18
album: Constant Change
  type: MusicAlbum
  date published: 2021-07-02
  track: Constant Change
    type: MusicRecording
    duration: PT2M33S
    duration ms: 153124
    explicit: false
    by artist: Leonid Antonov
    in album: Constant Change
      type: MusicAlbum
      date published: 2021-07-02
    isrc code: SE5W32102258
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T00:01:54+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x746ee53eb3a27499d5330b652dd686d68e7570e079764e29d7af6133d1379c9b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE5W32102258
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0x746ee53eb3a27499d5330b652dd686d68e7570e079764e29d7af6133d1379c9b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE5W32102258.
      date published: 2026-07-06T01:25:57Z
    audio: Constant Change
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 65.701
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.243
      additional property: Energy
        type: PropertyValue
        value: 0.029
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.962
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.948
      additional property: Liveness
        type: PropertyValue
        value: 0.109
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.103
      additional property: Loudness (dB)
        type: PropertyValue
        value: -29.358
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Space Time
  type: MusicAlbum
  date published: 2021-09-24
album: Atwined
  type: MusicAlbum
  date published: 2021-10-22
album: Fortress
  type: MusicAlbum
  date published: 2021-12-03
album: Whisper
  type: MusicAlbum
  date published: 2022-01-28
album: Parallel
  type: MusicAlbum
  date published: 2022-12-16
album: Innervisions
  type: MusicAlbum
  date published: 2023-01-27
album: Ataraxis
  type: MusicAlbum
  date published: 2023-02-24
album: Encircling
  type: MusicAlbum
  date published: 2023-03-24
album: Golden Hour
  type: MusicAlbum
  date published: 2023-04-28
album: Affirmation
  type: MusicAlbum
  date published: 2023-05-26
album: Meta
  type: MusicAlbum
  date published: 2023-09-01
album: Triangle
  type: MusicAlbum
  date published: 2023-10-27
album: Parallel Void
  type: MusicAlbum
  date published: 2024-01-12
album: Dreamland
  type: MusicAlbum
  date published: 2024-02-16
album: Simulacrum
  type: MusicAlbum
  date published: 2024-03-22
album: Reverential
  type: MusicAlbum
  date published: 2024-06-14
album: Disappearance
  type: MusicAlbum
  date published: 2024-11-08
album: Hibernate
  type: MusicAlbum
  date published: 2025-01-10
album: Binary
  type: MusicAlbum
  date published: 2025-02-28
album: Fluoresce
  type: MusicAlbum
  date published: 2025-05-23
album: Extraterrestrial
  type: MusicAlbum
  date published: 2025-06-06