Piano Sonata No. 1, Op. 1: II. Andante con moto

Recording by Hanns Eisler.

Recording identifiers

ISRC
NLE422435806
Release date of the album this recording appears on
2025-03-07
CopyrightID (CopyrightChains transaction hash)
0xe9f2ee425d8c05d1034bc788e9f3213cec66a1db8e5da25d5f923e1e61a80e1f
Copyright registration time
2026-07-29T18:09:28+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-29T19:35:34Z
Bitcoin block
960138
Canonical record hash
sha256:a54185cb97ba8a683140e6b26063fae950b2b408fc76b5564597f9f84b749585

What this proof establishes

This recording was released in 2025. ProofProfile's artist catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and this recording entered the record through cc-db-prod's ISRC-linked registration. Its provenance rests on the dates stated above rather than on the era of that source corpus.

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.