Piano Sonata No. 2 in B-flat Minor, Op. 35, "funeral March": Iii. Marche funebre: Lento

Recording identifiers

ISRC

HKI199233507

Release date of the album this recording appears on

2021-12-24

CopyrightID (CopyrightChains transaction hash)

0x48d0080b78f69f0784a567eb56da63c59536c4d8e2ed9d4c948427c25dbd0d68

Copyright registration time

2026-06-25T23:56:24+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:34953c60f531df40063b152c2cc76ef4fe46d56038af4d50192c7b9692483202

• Verify the CopyrightID on CopyrightChains
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• Recording evidence summary for ISRC HKI199233507

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.