Ballady ćwierć ballady pół

Recording by Michał Bajor.

Recording identifiers

ISRC
PLB170702037
CopyrightID (CopyrightChains transaction hash)
0x3e6d85d45852074ea8e95eacc2207597f0d229ae4f1c13b446ef587e930b0062
Copyright registration time
2026-07-07T08:23:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:90b87d44f96c955c844ddd2bab939c220e797dc84b3da016e5c355aad5472b6a

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.