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
2025-01-08
CopyrightID (CopyrightChains transaction hash)
0x77a6d8db80f6492679a6755b24072dda95100e1a6422761d1a3ba1fc3d2a041f

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-31T05:17:02Z
Bitcoin block
960348
Canonical record hash
sha256:c78621bf648f31e0c2e34d038b88082adc0517397ec1ec046755847c7ce38f82

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.