Tosca / Act 2: "Io tenni la promessa..." - "E qual via scegliete?" - "Tosca, finalmente mia!"

Recording identifiers

ISRC

GBF077840622

Release date of the album this recording appears on

1979-01-01

CopyrightID (CopyrightChains transaction hash)

0x64eb0bff939569da62d4033e9e5404268cc4bf5151144c7a1f43f3b20658e6ad

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-29T23:23:05Z

Bitcoin block

960164

Canonical record hash

sha256:6a2808c7addd5364fd266a6ab687c9a636f1a8940baa1a5565cda98b939b13b8

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
• Read the machine-verifiable OTS result
• Recording evidence summary for ISRC GBF077840622

What this proof establishes

This recording was released in 1979, 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.