The Barber of Seville, Act I: Una voce poco fa (Rosina)

Recording identifiers

ISRC

GBAYC9600391

Release date of the album this recording appears on

2020-04-04

CopyrightID (CopyrightChains transaction hash)

0x3c7b26ce8ab79a59d0493f30c4fafa2d2507b45096ad9e563483677ace84904b

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T00:26:26Z

Bitcoin block

960327

Canonical record hash

sha256:86395654af47ef929021e3d2260668b6d257a9cf22835e323bce0e10bdbf0689

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC9600391

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.