Keyboard Concerto No. 4 in A Major, BWV 1055: II. Larghetto

Recording by Johann Sebastian Bach.

Recording identifiers

ISRC
GBAJY0530802
Release date of the album this recording appears on
2025-05-01
CopyrightID (CopyrightChains transaction hash)
0x04a8505d523a1dbaefe442ce9a60e765bd9272d4b29313d77efc0a2db6bdb43a
Copyright registration time
2026-07-07T01:29:35+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-08T03:20:19Z
Bitcoin block
957118
Canonical record hash
sha256:3eee31b743a68760bac46d73f2d0bfe94980ea81ce7afb954ca8000c3f599ce1

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.