Mix 1

Recording by Brygida & Robert Łukowski.

Recording identifiers

ISRC
PLJ621500537
CopyrightID (CopyrightChains transaction hash)
0x2610049dfcc584e3e717eb511dd016adb329396bd255bfe79feb6133e7f53e41
Copyright registration time
2026-07-07T10:44:15+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:b155885d6551c22f37f171bb31bcd697055971da9fd7d53e43200f6541eae732

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.