Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 5

Recording by Frédéric Chopin.

Recording identifiers

ISRC
DEF056502065
Release date of the album this recording appears on
2025-01-30
CopyrightID (CopyrightChains transaction hash)
0x196cca2cba2ca4ae76780a74ffa35989d869f7d64d5bc5db07891e54fcf8e57f
Copyright registration time
2026-07-30T19:06:57+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-30T19:26:00Z
Bitcoin block
960298
Canonical record hash
sha256:4e5d68cef98cc5e97dd275fe06d546ef46d19192b0dac34210e16095dd62b4da

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.