Violin Sonata, II. Andantino Tranquillo e Dolce

Recording by Karol Szymanowski.

Recording identifiers

ISRC
USSJ10500234
CopyrightID (CopyrightChains transaction hash)
0x2a6a39f3973ba7b0aeb1f06ad2b8f12c25f208fe006393b0049898ca4552c853
Copyright registration time
2026-07-07T07:56:10+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:828625391abc8a3b5062ac14f12be5da9a90a6f5deef189d7120cc382c8a274a

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.