(Humming Chorus) Coro a boccia chiusa (from "Madama Butterfly", Act II)

Recording identifiers

ISRC

GBH5G1301027

Release date of the album this recording appears on

2013-02-16

CopyrightID (CopyrightChains transaction hash)

0x29f4d07fa996539b3d8cc1ea9f9d873731a7c7b488c427b5dcc7041646614448

Copyright registration time

2026-07-06T05:09:02+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-06T06:56:49Z

Bitcoin block

956889

Canonical record hash

sha256:6e4ed845fb32a614c9c0bd43647c413d723fe4f4856dbf75d4f4d8945a10fea1

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBH5G1301027

What this proof establishes

This recording was released in 2013, 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.