Le nozze di Figaro, K. 492, Act I: No. 2, Duet. Se a caso madama la notte ti chiama

Recording identifiers

ISRC

DEF056830103

Release date of the album this recording appears on

1968-01-01

CopyrightID (CopyrightChains transaction hash)

0x426020da033afc6eab469abdbd9fd2851f00e4e5dadbbe4beae592895303f519

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T15:38:18Z

Bitcoin block

960125

Canonical record hash

sha256:910bf0d545c7c23f01c23504d9d3ea6ddedcda5eb6d2a8c0cf237ebef1aa2cbd

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF056830103

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.