Le nozze di Figaro, K. 492, Atto I Scena 4: Recitativo. Tutto ancor non ho perso (Marcellina, Susanna)

Recording identifiers

ISRC

FRZ140308090

Release date of the album this recording appears on

2004

CopyrightID (CopyrightChains transaction hash)

0x3f56ec44b7c707d838cca01bbc29491d5cca2ff3babd5c9d108d36e00e62b73d

Copyright registration time

2026-06-11T13:30:28+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T15:41:10Z

Bitcoin block

953528

Canonical record hash

sha256:b2d77f498d7b9feb0327a14b64348e475458f7066f0dac14e499e41341795765

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FRZ140308090

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.