Beethoven: 32 Variations on an Original Theme in C Minor, WoO 80: Variations IX - XI

Recording identifiers

ISRC

GBAYC2401705

CopyrightID (CopyrightChains transaction hash)

0x213449f4b86a65a6f83747575bd7af291ae3fccf09f52bc78f2db1140ef33c15

Copyright registration time

2026-07-30T18:16:57+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T18:23:33Z

Bitcoin block

960291

Canonical record hash

sha256:93a526cfd3e9dcaa801d1d932a0b6448fc83ed3a2e412f39cb797e103df0519a

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result

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.