Le nozze di Figaro, K. 492, Act III: No. 20b, Dove sono i bei momenti

Recording identifiers

ISRC

DEF056830161

Release date of the album this recording appears on

1968-01-01

CopyrightID (CopyrightChains transaction hash)

0xc1960a14e1c150391f9597e7d7e5a5581498b7ea3ce1ff51ca80eef52c1b02a1

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T13:09:35Z

Bitcoin block

960108

Canonical record hash

sha256:19e0b6c24279303e79ac75d6c468a1a9f1bb20ebcfd2dd51c9406a1279395fe8

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC DEF056830161

What this proof establishes

This recording was released in 1968, 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.