Madama Butterfly, SC 74, Act II Scene 1: Intermezzo. Coro a bocca chiusa

Recording identifiers

ISRC

FR9W15500219

Release date of the album this recording appears on

2018-02-23

CopyrightID (CopyrightChains transaction hash)

0xb833b67b4cf0f6fb8d12632186ee0293ae4d4ab46d3fbd3ff3dff855af9188e2

Copyright registration time

2026-07-31T23:30:58+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T23:51:35Z

Bitcoin block

960481

Canonical record hash

sha256:c7964fe67b0e6de371cfd430adea4045c1775a52a77fa35409ebc2280da88109

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC FR9W15500219

What this proof establishes

This recording was released in 2018, 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.