Le nozze di Figaro, K. 492: "Nun vergiß leises Fleh'n"

Recording identifiers

ISRC

DEF056131706

Release date of the album this recording appears on

1962-07-01

CopyrightID (CopyrightChains transaction hash)

0xcc61d49196fe821341cef137117f723af96457d8de4b7028c733664ddadb4571

Copyright registration time

2026-07-31T07:55:20+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T08:26:41Z

Bitcoin block

960368

Canonical record hash

sha256:70eb27b0203abb44e55b74eae46b08ac4f0a1f8a15c2a54aaa6a41f61d9b7db2

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF056131706

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.