Nikola Kołodziejczyk
type: MusicGroup
description: Nikola Kołodziejczyk (born 5 July 1986) is a Polish jazz pianist, composer, arranger and conductor. Biography Kołodziejczyk was born on 5 July 1986 in Kraków. He graduated from and is a former facult
popularity: 6
followers: 191
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSVerifyInstructions
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  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 0x819cc752a23b83e655d138cc614dbf061cc7e197e640d31947990678aca71f07. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24ebe2ad-c8cc-45fb-ab55-72963e14ee0a.json and https://artists.proofprofile.net/proofs/artist/24ebe2ad-c8cc-45fb-ab55-72963e14ee0a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
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track: Ktoś całkiem nowy [Etiuda As-dur]
track: Przedsionek [Koncert fortepianowy e-moll]

Ktoś całkiem nowy [Etiuda As-dur]
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duration: PT4M9S
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by artist: Frédéric Chopin
by artist: Natalia Kukulska
by artist: Nikola Kołodziejczyk
by artist: Orkiestra symfoniczna Sinfonia Varsovia
in album: Czułe struny
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  date published: 2020-08-28
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: PLC592000101
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: Ktoś całkiem nowy [Etiuda As-dur]
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Przedsionek [Koncert fortepianowy e-moll]
type: MusicRecording
duration: PT5M37S
duration ms: 337666
explicit: false
by artist: Frédéric Chopin
by artist: Natalia Kukulska
by artist: Nikola Kołodziejczyk
by artist: Orkiestra symfoniczna Sinfonia Varsovia
in album: Czułe struny
  type: MusicAlbum
  date published: 2020-08-28
genre: classical
genre: early-romantic-era
genre: polish-classical
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7205005b692235e1d1e65c799b7e7daee404bd24f4a607ef162425da3f994153. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/PLC592000107.
  date published: 2026-07-29T13:09:35Z
audio: Przedsionek [Koncert fortepianowy e-moll]
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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 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