Brahms' Piano Lullaby

Recording by Matthew Mayer.

Recording identifiers

ISRC
US5ED2202182
CopyrightID (CopyrightChains transaction hash)
0x8f86bb2c6d2400af49b53f1c414eff89c3f7ec012f5c7edf2c83c404aa3535b6
Copyright registration time
2026-06-22T13:32:13+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:38e2042d77e745011d1c2a1240e5cab6471d6434514ab2bfb20a868d5e427503

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.