Search of Lost Time

Recording by Zbigniew Preisner.

Recording identifiers

ISRC
PLX351700006
CopyrightID (CopyrightChains transaction hash)
0x71af591cada6adb6d7a9d57e8cca903f1b9307c870db204e56ffba7d0c094b6c
Copyright registration time
2026-07-30T18:42:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T19:42:40Z
Bitcoin block
960300
Canonical record hash
sha256:2867418e5b2756ad692c26e3c3285f6616253ed4c90bce96a358adad3d5f26b0

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.