Juodvarnis
type: MusicGroup
popularity: 8
followers: 1732
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1f959c0baeb05fece025ccbb04256299e8a50070eb250793a92b3545fae95b72
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/454bebd9-c804-495b-b472-86bb6dcb01a9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/454bebd9-c804-495b-b472-86bb6dcb01a9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/454bebd9-c804-495b-b472-86bb6dcb01a9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
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 0x1f959c0baeb05fece025ccbb04256299e8a50070eb250793a92b3545fae95b72. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/454bebd9-c804-495b-b472-86bb6dcb01a9.json and https://artists.proofprofile.net/proofs/artist/454bebd9-c804-495b-b472-86bb6dcb01a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
album: Šauksmai iš praeities
  type: MusicAlbum
  date published: 2014-03-21
album: Šauksmai iš praeities
  type: MusicAlbum
  date published: 2014-03-21
album: Mirusio žmogaus kelionė
  type: MusicAlbum
  date published: 2016-02-21
album: Diena Kai Pasenau
  type: MusicAlbum
  date published: 2020-05-17
album: Prisimink Mane
  type: MusicAlbum
  date published: 2020-06-14
album: Sielos Dugne
  type: MusicAlbum
  date published: 2020-07-26
album: Nerimo Dienos
  type: MusicAlbum
  date published: 2020-08-28
  track: Mechaninė Saulė
    type: MusicRecording
    duration: PT4M51S
    duration ms: 291186
    explicit: false
    by artist: Juodvarnis
    in album: Nerimo Dienos
      type: MusicAlbum
      date published: 2020-08-28
    isrc code: QZK6Q2060696
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T16:11:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x45ef41555a998c2ae048f46ac22ae0981eeec6ed6b7e9e6fd54203dd3f774849
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958761
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958761
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6Q2060696
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T19:13:58Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ef41555a998c2ae048f46ac22ae0981eeec6ed6b7e9e6fd54203dd3f774849. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:58Z), 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/QZK6Q2060696.
      date published: 2026-07-19T19:13:58Z
    audio: Mechaninė Saulė
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 169.279
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.167
      additional property: Energy
        type: PropertyValue
        value: 0.953
      additional property: Speechiness
        type: PropertyValue
        value: 0.071
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.09
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.179
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.546
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Iš Amžių Šaknų (Live at MJR XXI 1/2)
  type: MusicAlbum
  date published: 2021-01-15
album: Trys (Live at MJR XXI 1/2)
  type: MusicAlbum
  date published: 2021-03-28
album: Svoris
  type: MusicAlbum
  date published: 2024-08-09
album: Juodos Akys
  type: MusicAlbum
  date published: 2025-01-24