Siwers feat. HZD, Satyr, Miki, Piotr Krasa
type: MusicGroup
popularity: 2
followers: 36
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x3f0f32a1b788bb62d5f6ccd8d78d5dba3eaa9afcd9f90208e55e77509025325e
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953972
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953972
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b1b9920-a767-4935-b97d-a7e72e230b36.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2b1b9920-a767-4935-b97d-a7e72e230b36.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2b1b9920-a767-4935-b97d-a7e72e230b36
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:31:10Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x3f0f32a1b788bb62d5f6ccd8d78d5dba3eaa9afcd9f90208e55e77509025325e","name":"Siwers feat. HZD, Satyr, Miki, Piotr Krasa","registered_at":"2026-06-16T04:31:27Z","symbol":"NIM0938206","token_address":"0x3210c016eaf0c0b059be769d5ee25d9cbd40f595","type":"artist","uuid":"2b1b9920-a767-4935-b97d-a7e72e230b36"}
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0f32a1b788bb62d5f6ccd8d78d5dba3eaa9afcd9f90208e55e77509025325e. Chain 2 (Bitcoin): anchored in block 953972 (2026-06-16T16:31:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b1b9920-a767-4935-b97d-a7e72e230b36.json and https://artists.proofprofile.net/proofs/artist/2b1b9920-a767-4935-b97d-a7e72e230b36.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:31:10Z
  text: {"copyright_id":"0x3f0f32a1b788bb62d5f6ccd8d78d5dba3eaa9afcd9f90208e55e77509025325e","name":"Siwers feat. HZD, Satyr, Miki, Piotr Krasa","registered_at":"2026-06-16T04:31:27Z","symbol":"NIM0938206","token_address":"0x3210c016eaf0c0b059be769d5ee25d9cbd40f595","type":"artist","uuid":"2b1b9920-a767-4935-b97d-a7e72e230b36"}
track: Może Kiedyś
  type: MusicRecording
  duration: PT4M59S
  duration ms: 299363
  explicit: false
  by artist: Siwers feat. HZD, Satyr, Miki, Piotr Krasa
  in album: Bez Ceregieli
    type: MusicAlbum
    date published: 2013-05-17
  isrc code: PLF671300910
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
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    value: 2026-06-09T11:24:49+00:00
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  additional property: OTSBitcoinBlock
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    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLF671300910
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 0x88a5c6366a04d5680f6c596299cfb3f894b106c2f7a837d1ebdfbd5f21c0895f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLF671300910.
    date published: 2026-07-02T03:55:08Z
  audio: Może Kiedyś
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.072
    additional property: Valence (Positivity)
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      value: 0.872
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.984
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
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      value: Minor