Introduction and Variations on a German National Air Op. posth. (KK 925-927) - Pt. 4

Recording by Frédéric Chopin.

Recording identifiers

ISRC
DEF056502064
Release date of the album this recording appears on
2024-12-08
CopyrightID (CopyrightChains transaction hash)
0x30299724653b8001869afb0c8988926a5b2a2e9493cf9a0f207ce66afb3aafaf
Copyright registration time
2026-06-24T11:08:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:715fb671d18e1509192ee3440dfe3bf35ccec8075ba6206eb7d963c2f5007231

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.