La bohème, Act IV: O Mimì, tu più non torni – Che ora sia

Recording identifiers

ISRC

GBF077240126

Release date of the album this recording appears on

1973-01-01

CopyrightID (CopyrightChains transaction hash)

0xa7908093c8c2a6c87043e56f8d9197e4e2636292d54bf145670e606f9c1ed969

Copyright registration time

2026-06-08T18:57:04+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-06-13T13:32:09Z

Bitcoin block

953520

Canonical record hash

sha256:64f3270fe9126c429d12db7ccb1ef2ffa6e8ed0738354f63abcbff5adb8f34a4

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF077240126

What this proof establishes

This recording was released in 1973, 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.