Il barbiere di Siviglia / Act 1: No. 4 Duetto: "All'idea di quel metallo"

Recording identifiers

ISRC

NLA508119707

Release date of the album this recording appears on

1983-06-01

CopyrightID (CopyrightChains transaction hash)

0xc0c49ef273ee3c81731d86677ff2603f752453cfc055cb57fe90c1c7d1e068ec

Copyright registration time

2026-07-06T06:46:25+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-06T07:53:57Z

Bitcoin block

956894

Canonical record hash

sha256:ce1385edbf3c7017a218ff6de5a88576b10751d67fa0658040eff2ac99db6469

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC NLA508119707

What this proof establishes

This recording was released in 1983, 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.