Étude III

Recording by Hans Sitt.

Recording identifiers

ISRC
QZNWY2482672
CopyrightID (CopyrightChains transaction hash)
0xaa3ff46a21c4d0ec052c8c66adad61e85d6614d3d98330cd8d4ab4b773b8b386
Copyright registration time
2026-07-08T00:38:18+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:22:41Z
Bitcoin block
957120
Canonical record hash
sha256:e9615a0adde630805d280c57039e92a59d4468e29525d772847c6a5ce4d51039

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.