Sonata a 4 in F Major

Recording identifiers

ISRC

USB8U1600943

CopyrightID (CopyrightChains transaction hash)

0x9150e57440f6bffb7e3aae7a97e3d73ea5c79723b7c3d8d79feda635d45fce2f

Copyright registration time

2026-08-01T00:38:17+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-08-01T01:44:32Z

Bitcoin block

960494

Canonical record hash

sha256:ad4b6cfe3dd45cd8666ec111be71059da76d3023a67b17b5ca03f24d7cf968b4

• 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.