Concerto in E-Flat Major: II. Romanze. Adagio

Recording by Johannes Matthias Sperger.

Recording identifiers

ISRC
NLY331701540
CopyrightID (CopyrightChains transaction hash)
0xad4c2dcf7abbb2404ed3446947cc4efcef45cbddf6a4b8fae98f7a217d07e467
Copyright registration time
2026-07-06T06:47:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-06T06:56:49Z
Bitcoin block
956889
Canonical record hash
sha256:13ea042396ad67a7e06b8c2d4eb2900bf07c2fb1a978e8776c911e42ee36c811

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.