Symphonic Studies, Op. 13: Etude II

Recording by Robert Schumann.

Recording identifiers

ISRC
DEF058100883
CopyrightID (CopyrightChains transaction hash)
0x23ff18c662a512f10c6b2df0d7c4255b93eceae00b58054eccc9f256620341fe
Copyright registration time
2026-07-07T00:59:08+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:9f3f43376d5f966068a30467127d0e0062ce06a682e91be2d0ab6827fbd5e066

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.