Rzeka Marzeń

Recording identifiers

ISRC

PLC270900018

CopyrightID (CopyrightChains transaction hash)

0x901a8ffe7fed7c53468f5922ab1284813624c9729c9d8cf57c2d0df03b65230c

Copyright registration time

2026-07-30T05:54:33+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T06:39:12Z

Bitcoin block

960216

Canonical record hash

sha256:2260ae5ff19f2bfa1f5331e08aa83cd9ffab513174bb942ceab54089a8f136a0

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.