Puccini: Tosca, Act 3: "O dolci mani mansuete e pure" (Cavaradossi, Tosca)

Recording identifiers

ISRC

GBAYC1450111

Release date of the album this recording appears on

1953

CopyrightID (CopyrightChains transaction hash)

0x3ca8256a87ba1d81ffb18854b6e780556de1b603010b0524093b2a93bdc88aff

Copyright registration time

2026-07-30T22:35:08+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T00:26:26Z

Bitcoin block

960327

Canonical record hash

sha256:064903d8d8b5e0e13a21d7859a9e86202d327bcd8e284e8e4ecb81b6ddff54be

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBAYC1450111

What this proof establishes

This recording was released in 1953, 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.