ISRC USX760500091
Verified recording
USX760500091 is “The Barber of Seville, Act I: "Largo al factotum"” by Czech Symphony Orchestra,
registered on the CopyrightChains blockchain with CopyrightID
0x1fe9d867557b3054245697909731ecf13cb67875141267af750a3cca8d3163ed and independently timestamped
in Bitcoin block 957120 on 2026-07-08.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX760500091.
Recording identifiers
- ISRC
- USX760500091
- Title
- The Barber of Seville, Act I: "Largo al factotum"
- Artist
- Czech Symphony Orchestra
- CopyrightID (CopyrightChains transaction hash)
0x1fe9d867557b3054245697909731ecf13cb67875141267af750a3cca8d3163ed
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-08T03:22:41+00:00
- Bitcoin block
- 957120
- Canonical record hash
sha256:60aa0ed5b3d2dd0b73027ea7fef2dcf262a3e3b13767740487f550badbfd1bab- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX760500091
- Bitcoin block existence check
- https://blockstream.info/api/block/957120
Full record
Track page: The Barber of Seville, Act I: "Largo al factotum" · Machine-readable JSON-LD