Le nozze di Figaro, K.492 / Act 2: "Bravo! Che bella voce!"

Recording identifiers

ISRC

DEF056830137

Release date of the album this recording appears on

1968-01-01

CopyrightID (CopyrightChains transaction hash)

0x6081f1edfdbb3dbaec5db0ed26bddb6e5c85f3bac2d833895393e6c4a652eba5

Copyright registration time

2026-07-30T19:07:59+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T19:26:00Z

Bitcoin block

960298

Canonical record hash

sha256:8801f6b3ce8cd9b5264b53fd29cb32c949780730cc5e37ab6f75e58110aee7ee

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF056830137

What this proof establishes

This recording was released in 1968, 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.