Le nozze di Figaro, K. 492, Act II: Voi che sapete

Recording identifiers

ISRC

NLA507200576

Release date of the album this recording appears on

2003-01-01

CopyrightID (CopyrightChains transaction hash)

0x427c3e7e1e5cdd349a4569b7059ece94c2c1f5180b5a4a5ea33ab790086a712f

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T10:20:10Z

Bitcoin block

960389

Canonical record hash

sha256:4eea133a1f3376fab6ed520cc4a3c23366b754a4bb09303378ae305a16ed8e4d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLA507200576

What this proof establishes

This recording was released in 2003, 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.