Violin Concerto in D Minor, WoO 23: II. Langsam

Recording by Robert Schumann.

Recording identifiers

ISRC
USX9P2311797
CopyrightID (CopyrightChains transaction hash)
0x25cedf3774cf8bf6bb5441a9a033598b34c7d45ea038a5144fd0c5ed3dcd2341
Copyright registration time
2026-06-09T21:03:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-06-13T13:32:09Z
Bitcoin block
953520
Canonical record hash
sha256:5a330228634b968998703299b695dea7a302869075265294b02e4841fd1f2c6f

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.