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

Recording identifiers

ISRC

GBBBA0345606

CopyrightID (CopyrightChains transaction hash)

0x52d21d9340e9ac1a479ebdbc81a836c3948493a7328e050dbe2062425ad1595f

Copyright registration time

2026-06-27T22:38:09+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:dc06b39b55f71413543025074248e9ad7f2b102dcedf1526787dc7795bb782b4

• 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.