Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 1

Recording by Frédéric Chopin.

Recording identifiers

ISRC
DEF056502061
Release date of the album this recording appears on
2024-12-08
CopyrightID (CopyrightChains transaction hash)
0x0dd6236d15c18e0b9afdae90041afaa257bf1140d7a5f06bd9a357f2ccf69bbd
Copyright registration time
2026-07-04T08:11:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-07T14:41:13Z
Bitcoin block
957050
Canonical record hash
sha256:44d3d6937f73d4c19bb4a4825a03a16dd07815f213ca3ded6d8ca398222f0dc4

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.