Duo concertant in B Major, Op. 3 No. 1: I. Allegro

Recording by August Fryderyk Duranowski.

Recording identifiers

ISRC
CHE272503004
Release date of the album this recording appears on
2025-01-10
CopyrightID (CopyrightChains transaction hash)
0xdfc5fc2d3e8b8a4212f1c7ef4d059e8fe0c6dcb66c0a15168be97c3733703c54
Copyright registration time
2026-07-07T00:05:50+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:ed8393d65f6a9f6ee86e35968651e82e2cd28ac388acaf9af7dbbef37baa9457

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.