Le nozze di Figaro, K. 492: No. 21 Duettino: "Sull'aria?..Che soave zeffiretto"

Recording identifiers

ISRC

USSM10102306

Release date of the album this recording appears on

2014-05-09

CopyrightID (CopyrightChains transaction hash)

0x6a1b67e852e4d203fa0c4e60d85f009e129c428026ca80c05195180e0dbb3cb9

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T13:06:57Z

Bitcoin block

960404

Canonical record hash

sha256:37672ad7a17bfa88709d31572c0fbec14163478b77556ea12f439922ce4c4c81

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC USSM10102306

What this proof establishes

This recording was released in 2014, 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.