Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 6

Recording by Frédéric Chopin.

Recording identifiers

ISRC
DEF056502066
Release date of the album this recording appears on
2024-12-08
CopyrightID (CopyrightChains transaction hash)
0x77a6d8db80f6492679a6755b24072dda95100e1a6422761d1a3ba1fc3d2a041f
Copyright registration time
2026-07-31T02:01:58+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T02:19:15Z
Bitcoin block
960334
Canonical record hash
sha256:206cddae0f5289f8c088ff54d3e856e23cad9587a906d94ef73dfd64dfbb7a4c

What this proof establishes

This recording was released in 2024. 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.