Le nozze di Figaro, K. 492: Act I No. 1: Duettino - Cinque...dieci...venti...trenta

Recording identifiers

ISRC

HKI190348102

Release date of the album this recording appears on

2004-05-08

CopyrightID (CopyrightChains transaction hash)

0x41cf664be14cf932846673d3da0640759afe53a787b718c8f85828cccff02c3c

Copyright registration time

2026-07-07T15:44:09+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-08T03:53:27Z

Bitcoin block

957124

Canonical record hash

sha256:7998694415758693b4de53030fcb8848c522c10a9a384aeb1030d8146c98c135

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC HKI190348102

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.