12 Variations on "Ein Mädchen oder Weibchen" for Cello and Piano, Op. 66: Variation VI

Recording identifiers

ISRC

GBBBA0345607

CopyrightID (CopyrightChains transaction hash)

0xc143fc875e0e466a2e5b5b0f95efd0b667d8a3bbc0c8b6d7f98aed622daa0c11

Copyright registration time

2026-07-30T18:34:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T18:46:00Z

Bitcoin block

960294

Canonical record hash

sha256:aaba340113b5b1b456304dce37417f55fc71bfa45dbb47de65232d17eaf58d8e

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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.