4 Sketches, Op. 4, JB 1:66: No. 1 in F-Sharp Minor, Prelude. Allegro

Recording identifiers

ISRC

CZA160900061

Release date of the album this recording appears on

2009-03-13

CopyrightID (CopyrightChains transaction hash)

0xe22abac4e9c592d24cd051fce53eff036c172ece331882b5b65d826c99620eae

Copyright registration time

2026-06-24T16:32:02+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T05:09:12Z

Bitcoin block

956312

Canonical record hash

sha256:490209ccca46a3e36df371095ceb600af16ca5ec301aaf9832d3cf12b3544dc5

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC CZA160900061

What this proof establishes

This recording was released in 2009, 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.