Na próżno

Recording by Kasia Cerekwicka.

Recording identifiers

ISRC
PLC592000013
CopyrightID (CopyrightChains transaction hash)
0x965e0ab60519d3b5935256364b5a45f8fedb4fab4c5d4b491c6a5c3d3a7de312
Copyright registration time
2026-07-30T18:06:39+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T20:09:33Z
Bitcoin block
960302
Canonical record hash
sha256:19e412f6c3a161959316f6f8ca480d34ec7ca9a4768720ac41f18933ad4ab5c1

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.