Popioły
type: MusicGroup
genre: black metal
popularity: 4
followers: 982
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa9539de7839e9e94f6a1f4d2c187e3f126fe53a8451a9fa1d35a79240ef54c3f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdfe7270-0ea3-40b1-b344-66f67c00fff9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdfe7270-0ea3-40b1-b344-66f67c00fff9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fdfe7270-0ea3-40b1-b344-66f67c00fff9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa9539de7839e9e94f6a1f4d2c187e3f126fe53a8451a9fa1d35a79240ef54c3f","name":"Popioły","registered_at":"2026-06-21T18:03:21Z","symbol":"NIM1993684","token_address":"0x0ef4d390239419f5b1ea0b9e0cd7d121b6021813","type":"artist","uuid":"fdfe7270-0ea3-40b1-b344-66f67c00fff9"}
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 0xa9539de7839e9e94f6a1f4d2c187e3f126fe53a8451a9fa1d35a79240ef54c3f. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdfe7270-0ea3-40b1-b344-66f67c00fff9.json and https://artists.proofprofile.net/proofs/artist/fdfe7270-0ea3-40b1-b344-66f67c00fff9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0xa9539de7839e9e94f6a1f4d2c187e3f126fe53a8451a9fa1d35a79240ef54c3f","name":"Popioły","registered_at":"2026-06-21T18:03:21Z","symbol":"NIM1993684","token_address":"0x0ef4d390239419f5b1ea0b9e0cd7d121b6021813","type":"artist","uuid":"fdfe7270-0ea3-40b1-b344-66f67c00fff9"}
album: Per Aspera Ad Harenae
  type: MusicAlbum
  date published: 2019-05-20
  track: Destination
    type: MusicRecording
    duration: PT2M29S
    duration ms: 149426
    explicit: false
    by artist: Popioły
    in album: Per Aspera Ad Harenae
      type: MusicAlbum
      date published: 2019-05-20
    genre: black metal
    isrc code: SEYOK1930004
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T00:58:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2539b800021ea0d70201c507434e8a71145902fd930df80621fb93605f4248e3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956742
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956742
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEYOK1930004
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T22:38:55Z
    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 0x2539b800021ea0d70201c507434e8a71145902fd930df80621fb93605f4248e3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:38:55Z), 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/SEYOK1930004.
      date published: 2026-07-19T22:38:55Z
    audio: Destination
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.988
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.423
      additional property: Energy
        type: PropertyValue
        value: 0.972
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.772
      additional property: Liveness
        type: PropertyValue
        value: 0.161
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.347
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.021
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Purposeless through meaning
  type: MusicAlbum
  date published: 2020-06-30