4 Impromptus, D. 899 (Op. 90): No. 4 in A-Flat Major. Allegretto

Recording identifiers

ISRC

GBF078200574

Release date of the album this recording appears on

2023-09-25

CopyrightID (CopyrightChains transaction hash)

0x5748af8d8064cfadc1643dd3057720c49e99faf9a6656cb691275954c16c8dcb

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T20:42:35Z

Bitcoin block

960463

Canonical record hash

sha256:65a0ab997b614873fa6cef8d3b4fb713c638eaa91561b5b2530f5d31483169bb

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF078200574

What this proof establishes

This recording was released in 2023. 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.