Symphonic Studies, Op. 13: Etude IX

Recording by Robert Schumann.

Recording identifiers

ISRC
DEF058100892
CopyrightID (CopyrightChains transaction hash)
0x321f84a36622feb790416f6a12f857eea47f3be89cae3476ecfd4b08b5a6371a
Copyright registration time
2026-07-31T00:26:10+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T02:19:15Z
Bitcoin block
960334
Canonical record hash
sha256:b229f795884330d283fac77346867372bf7188f1ee41885aa354019252e8247b

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.