Madama Butterfly, Act II: Un bel di vedremo (arr. for trombone)

Recording identifiers

ISRC

HKI190629905

Release date of the album this recording appears on

2007-03-27

CopyrightID (CopyrightChains transaction hash)

0xfdcb8e3394c5ff16b69b8092fc3c0313b3d5265f967b1e7859d708550c21d908

Copyright registration time

2026-07-06T09:41:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-07T14:41:13Z

Bitcoin block

957050

Canonical record hash

sha256:dab6d87ec3237b36fa19d44da7e738cb39951187012f97e128990fbfc5ff4231

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC HKI190629905

What this proof establishes

This recording was released in 2007, 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.