Six Variation for Glass Harmonica: VI. Variation No. 5

Recording by Václav Vincenc Mašek.

Recording identifiers

ISRC
CH1409694007
CopyrightID (CopyrightChains transaction hash)
0xb5d97c44e104a10a79954871fadf2779ce5d6433b453db684a5d3f116b552425
Copyright registration time
2026-07-07T14:40:20+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:d3cb091576ec4e715d9712e30c0b30d88f7d996fb94ef7e52ea50c5f9739e1ed

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.