The Marriage of Figaro, K. 492, Act II: So you're proposing not to open it? (Count, Countess)

Recording identifiers

ISRC

GBLWD0412110

Release date of the album this recording appears on

2004-08-01

CopyrightID (CopyrightChains transaction hash)

0x5c0436b1db0c0295e1752f443e534b6b5fb7efbbd4b5ee863aee12940af99200

Copyright registration time

2026-07-07T13:57:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:20:19Z

Bitcoin block

957118

Canonical record hash

sha256:fac3e6dc1b963511def9d4d7cf17b743863208c50c8bcb513aea81d4a5dbab8e

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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• Recording evidence summary for ISRC GBLWD0412110

What this proof establishes

This recording was released in 2004, 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.