Lullaby, K. 350

Recording by Wolfgang Amadeus Mozart.

Recording identifiers

ISRC
RUB362100006
CopyrightID (CopyrightChains transaction hash)
0x011d90b0797cb9af4589b579b173416f669c2d67332d2a1e8b2b301ef3a3bc4a
Copyright registration time
2026-07-06T23:31:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:8baf8d8d1984138ef13d1b63aa4bb9a23ae62eeb8ec94981d80920ee1de49409

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.