Le Nozze di Figaro, K. 492, Act I: Non so più cosa son

Recording identifiers

ISRC

GBAYC8600635

Release date of the album this recording appears on

2020-07-04

CopyrightID (CopyrightChains transaction hash)

0x990aa1744cc8bb941df89a975d00ed930549b261ec144a41ee05df87f6ef21cb

Copyright registration time

2026-06-19T09:01:49+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:e04a2789253278d913523b7ab2a707a6934d48f581c4a12a19c884d1541b6fe8

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC8600635

What this proof establishes

This recording was released in 2020, 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.