Mozart: Le nozze di Figaro, K. 492, Act 2: "Porgi, amor, qualche ristoro" (Contessa)

Recording identifiers

ISRC

GBAYC1701499

Release date of the album this recording appears on

2017-07-07

CopyrightID (CopyrightChains transaction hash)

0x895f631b0bb3a4f70e6770dfbc0d6112a1ec1fb253a1b090c83ff4f8b20a4bfe

Copyright registration time

2026-07-06T09:34:40+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T08:27:05Z

Bitcoin block

957012

Canonical record hash

sha256:6caa0d648aa6c6c74115c279faac09e005782c9a7045b6aac0fdb95b595d92f2

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC1701499

What this proof establishes

This recording was released in 2017, 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.