Gdzie jest wczorajszy dzień (feat. Halina Frąckowiak)

Recording identifiers

ISRC

PLA247013639

Release date of the album this recording appears on

1970-06-23

CopyrightID (CopyrightChains transaction hash)

0xb468915670487c5105477f0ccbd0c57654ff96ba9249585bc039df56f832c999

Copyright registration time

2026-07-31T17:56:22+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T18:48:12Z

Bitcoin block

960448

Canonical record hash

sha256:b37c32296a76ffd68ab2b1800dc901bcb3c2dd2e9bdec09971c1f66ec7a36923

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC PLA247013639

What this proof establishes

This recording was released in 1970, 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.