Searching For a Lost World

Recording by Zbigniew Preisner.

Recording identifiers

ISRC
PLX352200029
CopyrightID (CopyrightChains transaction hash)
0x02b6729b5d8fdc5f6e419c9e5934291b3f169e60b3f3e517067cb4ed64ecda0b
Copyright registration time
2026-06-21T22:34:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:7823678b7477874d0aa46ce3178ba5f5ab750f875a30382c804737949fa47eb2

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.