Le nozze di Figaro, K. 492: "Sagt, holde Frauen"

Recording identifiers

ISRC

DEF056131708

Release date of the album this recording appears on

1962-07-01

CopyrightID (CopyrightChains transaction hash)

0x54e81f7d88703e4a928a7e724cc75dcb70bac19f1e7447db264b03752f5c00ab

Copyright registration time

2026-07-30T21:51:10+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-30T22:27:30Z

Bitcoin block

960321

Canonical record hash

sha256:8d16d285d67252630bb182196ab7cc344b4cef24f492ba107c5b9223d2869451

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF056131708

What this proof establishes

This recording was released in 1962, 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.