Maratończyk

Recording by Wojciech Brzeziński.

Recording identifiers

ISRC
PLB170801994
CopyrightID (CopyrightChains transaction hash)
0x396a45b4374342b246f19386f50bc66e54c8ea80c29e1c023e8432e81b33a09b
Copyright registration time
2026-07-06T20:56:52+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:6902b6ad48db7f6e9a071be14fab8ba2fae1af86a75dc58369843863b6200398

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.