Tosca

Recording by Giacomo Puccini.

Recording identifiers

ISRC
ES5701100039
CopyrightID (CopyrightChains transaction hash)
0xa10f514ee4c33fdaf2ea0804be1cddbfafefeabdae36a5bc335e8b52ca97281a
Copyright registration time
2026-06-25T17:12:31+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp
2026-07-02T03:55:08Z
Bitcoin block
956304
Canonical record hash
sha256:5af9d540063e8aa788282d81f96c8d64bfa77741a9ff4c18adf49dd4de098f0d

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.