Pieśni: Czasem, gdy długo na półsennie marzę

Recording identifiers

ISRC

PLC701911418

Release date of the album this recording appears on

2020-01-09

CopyrightID (CopyrightChains transaction hash)

0x18571da206ef950fa2c8bee0536a11fad34f430a5d2f3d1f4cfd9dc7234e45b6

Copyright registration time

2026-07-31T16:09:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T17:29:52Z

Bitcoin block

960441

Canonical record hash

sha256:7b846922cbc891f6c8123746d5af3a02e5c05feef0d9ddb783c72f4616026a29

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC PLC701911418

What this proof establishes

This recording was released in 2020, 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.