Sonata in A Minor for Violin and Cello, M. 73: I. Allegro

Recording identifiers

ISRC

FR50X2075706

Release date of the album this recording appears on

2021-10-08

CopyrightID (CopyrightChains transaction hash)

0x2f92ca0d7066b04fa50f84bc5e97655dfccfd4fa0a14a59f847c557b272d834e

Copyright registration time

2026-07-31T03:15:28+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T04:14:58Z

Bitcoin block

960344

Canonical record hash

sha256:556756017070877fc63033664fd6208b94af5132bae7370b6df5ffa713285be7

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FR50X2075706

What this proof establishes

This recording was released in 2021, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and 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.