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album: Piękna jak księżyc - Victrix Regina Poloniae
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  date published: 2023-10-08
album: The Sound of the Sea
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  date published: 2023-01-19
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    by artist: Bartosz Kowalski
    by artist: Chór Politechniki Morskiej w Szczecinie
    by artist: Sylwia Fabiańczyk - Makuch
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      date published: 2023-01-19
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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 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
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      date published: 2026-07-31T12:24:41Z
    audio: Water Song
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      additional property: Tempo (BPM)
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      additional property: Danceability
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      additional property: Valence (Positivity)
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album: Midnight Stories: Contemporary Music of Polish Composers
  type: MusicAlbum
  date published: 2020-04-17
album: Chór Politechniki Morskiej w Szczecinie – przesłuchania konkursowe 2022
  type: MusicAlbum
  date published: 2023-02-03
  track: Deszcz na morzu
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    by artist: Marek Raczyński
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      type: MusicAlbum
      date published: 2023-02-03
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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
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-31T00:26:26Z
    audio: Deszcz na morzu
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      additional property: Tempo (BPM)
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  track: The Conversion of Saul
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    duration: PT4M1S
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    by artist: Grand Prix Polskiej Chóralistyki
    by artist: Z. Randall Stroope
    in album: Chór Politechniki Morskiej w Szczecinie – przesłuchania konkursowe 2022
      type: MusicAlbum
      date published: 2023-02-03
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    subject of: OpenTimestamps Proof of Existence
    audio: The Conversion of Saul
album: Śpiewajmy!
track: Niech zstąpi Duch Twój

CopyrightChainExplorerURL
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42365615

OTSTimestamp
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value: 2026-07-31T18:48:12Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d24d41139c0acb7ff91e946e0a949107a7a57f80e8fe68566db91489914a3c8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZDA42365615.
date published: 2026-07-31T18:48:12Z

The Conversion of Saul
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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
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Śpiewajmy!
type: MusicAlbum
date published: 2019-09-06

Niech zstąpi Duch Twój
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duration: PT3M43S
duration ms: 223746
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by artist: Zuzanna Falkowska
by artist: Chór Centrum Myśli Jana Pawła II
by artist: Jakub Siekierzyński
in album: Zdumieni światłem
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  date published: 2025-04-30
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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 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 0x0a7a6c285ffe56d6efc5760d04d41050c7592f52f3bd810764b16005ec31de6c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLA162515301.
  date published: 2026-07-08T03:22:41Z
audio: Niech zstąpi Duch Twój
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