Madama Butterfly, Act II: Un bel dì vedremo (Butterfly)

Recording identifiers

ISRC

GBAYC8600153

Release date of the album this recording appears on

1966

CopyrightID (CopyrightChains transaction hash)

0x6b2f1c52d456bad167c4ea28b3b1553a396fa3bf6f77326219e90ad233284843

Copyright registration time

2026-06-08T11:22:02+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T13:32:09Z

Bitcoin block

953520

Canonical record hash

sha256:05983020ee46b77a78ef1f50e892bae00359742089f6787aa1e656a853e06951

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC8600153

What this proof establishes

This recording was released in 1966, 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.