Cassation in G Major, "Toy Symphony": I. Allegro

Recording by Leopold Mozart.

Recording identifiers

ISRC
HUA250006601
CopyrightID (CopyrightChains transaction hash)
0xdb6b7fbc12f74eafbf4a89b08a1c10d69d1cf2203c9de2a55c1a439f4c600abb
Copyright registration time
2026-06-19T09:01:54+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:30:09Z
Bitcoin block
956302
Canonical record hash
sha256:99f7d15de602496a5e7f53dcf4442d5f4f8b66943d0fac369fec27534d554f84

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.