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

Recording identifiers

ISRC

GBAYC9000585

Release date of the album this recording appears on

2019-04-12

CopyrightID (CopyrightChains transaction hash)

0x676768463a28533e4686deb8bde6574e3877aeee097df392d3990e13ea6c0d71

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T19:53:13Z

Bitcoin block

960455

Canonical record hash

sha256:a2b6e464680fe3504dcbf776990bf14cb14efb7f80f644de86b7236b1ea363fa

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC9000585

What this proof establishes

This recording was released in 2019, 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.