Sonata in E Major, K. 531

Recording identifiers

ISRC

USSM11904045

CopyrightID (CopyrightChains transaction hash)

0x0fcbd66eaa110b24dc9b108a3b31ab26adb7ca2b73d8ec57e69d001ee7d25a67

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T13:21:01Z

Bitcoin block

960111

Canonical record hash

sha256:cf6ef8c46bf32660c93e89b0ebe07001bef615e0ccd8af2003226431692b4621

• 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.