Nocna Zmiana Bluesa
type: MusicGroup
genre: blues
genre: blues rock
popularity: 14
followers: 3662
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSVerificationAPI
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f64a2a614a805a994fc69d6ba65b4a0d51cefee64561d1cc599261085df51d. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c320c43-9637-4e3d-820b-b271e22fa103.json and https://artists.proofprofile.net/proofs/artist/5c320c43-9637-4e3d-820b-b271e22fa103.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:07:16Z
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album: The Best of the Blues Nightshift
  type: MusicAlbum
  date published: 1990-06-25
album: Chory na bluesa
  type: MusicAlbum
  date published: 1993-04-02
album: Blues w sile wieku (The Best)
  type: MusicAlbum
  date published: 2005-06-29
  track: John Lee Hooker
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    by artist: Nocna Zmiana Bluesa
    in album: Blues w sile wieku (The Best)
      type: MusicAlbum
      date published: 2005-06-29
    genre: blues
    genre: blues rock
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T02:20:07Z
    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 0xf6685d12f3a23c05acc51c2456d3d00cc6a2a18027b9a0a641b97b3315a0ac23. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:20:07Z), 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/PLB171302308.
      date published: 2026-07-17T02:20:07Z
    audio: John Lee Hooker
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      additional property: Danceability
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      additional property: Liveness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
        type: PropertyValue
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      additional property: Key Name
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      additional property: Mode Name
        type: PropertyValue
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  track: Polski blues
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    by artist: Nocna Zmiana Bluesa
    in album: Blues w sile wieku (The Best)
      type: MusicAlbum
      date published: 2005-06-29
    genre: blues
    genre: blues rock
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    additional property: OTSTimestamp
      type: PropertyValue
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    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 0x8a048ac6b26895b5c80a9004a8577717c53cf8510541cb2d38e1ec8e1a750a6a. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/PLB171302314.
      date published: 2026-07-18T00:52:36Z
    audio: Polski blues
      type: AudioObject
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      additional property: Danceability
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      additional property: Energy
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      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Chory na bluesa
album: Harmonijkowy as
album: Blues Mieszka w Polsce
album: Co Tylko Chcesz
album: Official Bootleg (Live)
album: Blues mieszka w Polsce
album: Co tylko chcesz
album: Back to the Roots - Live in Olsztyn
album: My się nie damy (Live)
album: Amazonia
album: Koncert w Rozmarino

Instrumentalness
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value: 0

Liveness
type: PropertyValue
value: 0.091

Valence (Positivity)
type: PropertyValue
value: 0.339

Loudness (dB)
type: PropertyValue
value: -9.613

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

Chory na bluesa
type: MusicRecording
duration: PT4M1S
duration ms: 241280
explicit: false
by artist: Nocna Zmiana Bluesa
in album: Blues w sile wieku (The Best)
  type: MusicAlbum
  date published: 2005-06-29
genre: blues
genre: blues rock
isrc code: PLB171302322
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-03T00:23:55+00:00
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additional property: OTSHash
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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 0xd87a7f673d8407041046bfc07ccee0822d424700824bca124ccdce54e0477441. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PLB171302322.
  date published: 2026-07-03T01:01:38Z
audio: Chory na bluesa
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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    value: 0.004
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.707
  additional property: Key Name
    type: PropertyValue
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Harmonijkowy as
type: MusicAlbum
date published: 2006-04-25

Blues Mieszka w Polsce
type: MusicAlbum
date published: 2006-10-02

Co Tylko Chcesz
type: MusicAlbum
date published: 2006-10-02

Official Bootleg (Live)
type: MusicAlbum
date published: 2006-10-02

Blues mieszka w Polsce
type: MusicAlbum
date published: 2006-10-02
track: Blues mieszka w Polsce
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  duration: PT3M7S
  duration ms: 187786
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  by artist: Nocna Zmiana Bluesa
  in album: Blues mieszka w Polsce
    type: MusicAlbum
    date published: 2006-10-02
  genre: blues
  genre: blues rock
  isrc code: PLB170600137
  additional property: CopyrightID
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    type: PropertyValue
    value: registered
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    value: 2026-07-16T06:22:53+00:00
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLB170600137
  additional property: OTSTimestamp
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  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 0x1f54529badc3498bef60ceb50a24ef66c323dda84f624b0e737d5816dee399d4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PLB170600137.
    date published: 2026-07-16T07:22:18Z
  audio: Blues mieszka w Polsce
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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      type: PropertyValue
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      type: PropertyValue
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    additional property: Valence (Positivity)
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      value: 0.424
    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
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Co tylko chcesz
type: MusicAlbum
date published: 2006-10-02

Back to the Roots - Live in Olsztyn
type: MusicAlbum
date published: 2015-12-31

My się nie damy (Live)
type: MusicAlbum
date published: 2016-12-01

Amazonia
type: MusicAlbum
date published: 2021-11-14

Koncert w Rozmarino
type: MusicAlbum
date published: 2023-12-11