Tosca, Act. I - Recondite armonie

Recording by Giacomo Puccini.

Recording identifiers

ISRC
USA560660077
CopyrightID (CopyrightChains transaction hash)
0x0e788ff0cc7765c5fa2eef2879eaab0933501b303e5ca0b2251b82c7fee9daef
Copyright registration time
2026-07-22T05:18:44+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-22T05:56:21Z
Bitcoin block
959103
Canonical record hash
sha256:9312c769c608e4111ca37925ea5d20aaa27efa9d6634563b04fe73a6756b2181

What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. 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.