Piano Sonata No. 2 in B-Flat Minor, Op. 35: I. Grave

Recording identifiers

ISRC

FRZ119506350

Release date of the album this recording appears on

2021-08-28

CopyrightID (CopyrightChains transaction hash)

0xf045a6ddb87e1e74c00454a7d76f6548ed4815599db1ce013c6d62371774649a

Copyright registration time

2026-07-07T14:51:21+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:354051547a7d88776e39e30515c00256ed85f9db7e827aece6f4670e42bdf168

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC FRZ119506350

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.