ISRC USB8U1520859
Verified recording
USB8U1520859 is “Tosca, S. 69: Act I: Recondita armonia” by Giacomo Puccini,
registered on the CopyrightChains blockchain with CopyrightID
0xe0f5d508bb102a6074c3ff4d686f4ecdcaf345ebc78d7ede642d51360bcab277 and independently timestamped
in Bitcoin block 960273 on 2026-07-30.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1520859.
Recording identifiers
- ISRC
- USB8U1520859
- Title
- Tosca, S. 69: Act I: Recondita armonia
- Artist
- Giacomo Puccini
- CopyrightID (CopyrightChains transaction hash)
0xe0f5d508bb102a6074c3ff4d686f4ecdcaf345ebc78d7ede642d51360bcab277
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-30T15:42:38+00:00
- Bitcoin block
- 960273
- Canonical record hash
sha256:78bb364d9e3aaa472544ff538463e511bc38580dd566a2cb7896089516f60657- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1520859
- Bitcoin block existence check
- https://blockstream.info/api/block/960273
Full record
Track page: Tosca, S. 69: Act I: Recondita armonia · Machine-readable JSON-LD