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

Recording identifiers

ISRC

GBBBA0345603

CopyrightID (CopyrightChains transaction hash)

0x4d479825674d7559114e0f0486248d1b19308eadbc591c0782ebba0d5e585f47

Copyright registration time

2026-06-27T22:48:23+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T16:51:38Z

Bitcoin block

956375

Canonical record hash

sha256:4fba75776e3f7fd1704063ea0a1d2f09b679e592a9f077f7a1dd449f396f39c8

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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.