Madama Butterfly, Act II: Io scendo al piano (Sharpless, Butterfly)

Recording identifiers

ISRC

GBAYC8600160

Release date of the album this recording appears on

1966

CopyrightID (CopyrightChains transaction hash)

0xa846ba17a3974bc73b07ac3d61d4e719cc338d1157d883fe338a10efcf25af64

Copyright registration time

2026-06-24T10:03:05+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-02T03:55:08Z

Bitcoin block

956304

Canonical record hash

sha256:0c1af3eb06621cdc20b4a03800beaa3d24f51cae8af5578bcc7ba8a5fc167c9d

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC8600160

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.