Ciężkie czasy (feat. Wiśnia Bakajoko)

Recording identifiers

ISRC

PLF241906205

Release date of the album this recording appears on

2019-05-24

CopyrightID (CopyrightChains transaction hash)

0x0138d64f08e5e9355e11e5340c7bd2f5c0b7a4bf6d5aff919afcf290ee8dc831

Copyright registration time

2026-06-07T14:57:45+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T12:53:06Z

Bitcoin block

953515

Canonical record hash

sha256:333067530223753f4f1221c99f35a77a1ea09c0fc879cf34afbdb52632227924

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC PLF241906205

What this proof establishes

This recording was released in 2019, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.