4 Impromptus, Op. 90, D.899: N°4 en la bémol majeur

Recording identifiers

ISRC

FRUM78300045

Release date of the album this recording appears on

2010-01-01

CopyrightID (CopyrightChains transaction hash)

0xa3a3025b04fc2e24ce482e68a4b184d674c0eb9080c95106546c4f9594f9a0f8

Copyright registration time

2026-07-06T02:33:39+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-06T06:56:49Z

Bitcoin block

956889

Canonical record hash

sha256:48eb539da97a432e4c7921846c205e58f78a7f56ed69a65956fd79e27f37ef41

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FRUM78300045

What this proof establishes

This recording was released in 2010, before generative AI. ProofProfile's catalogue derives from the pre-2022 AcousticBrainz and MusicBrainz source corpus, and ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

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.