Flute Quartet in C Major, K. Anh. 171: II. Theme & Variations

Recording identifiers

ISRC

CH0041600540

CopyrightID (CopyrightChains transaction hash)

0xf1b382cbe237f512c41ff656b0f73a1ac8fdf067ee5fe0d8e1dcd8b31cda7492

Copyright registration time

2026-07-07T08:50:48+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:22:41Z

Bitcoin block

957120

Canonical record hash

sha256:bd5a7dc8d902af213244c096b414a57a5b4656ef760e69d8a074da2e17b13d5a

• Verify the CopyrightID on CopyrightChains
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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.