ISRC USUM72215133
Verified recording
USUM72215133 is “"Managua" - Live In Zagreb, November 21, 1975” by Frank Zappa,
registered on the CopyrightChains blockchain with CopyrightID
0x2bfb89ffe5f92cad7ccc04bf4897ba21c3078b952a21754a9ad8837c06c215f6 and independently timestamped
in Bitcoin block 957050 on 2026-07-07.
Verify the canonical record, hash, and Bitcoin attestation at
https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72215133.
Recording identifiers
- ISRC
- USUM72215133
- Title
- "Managua" - Live In Zagreb, November 21, 1975
- Artist
- Frank Zappa
- CopyrightID (CopyrightChains transaction hash)
0x2bfb89ffe5f92cad7ccc04bf4897ba21c3078b952a21754a9ad8837c06c215f6
Dual-chain proof evidence
- Bitcoin-attested timestamp
- 2026-07-07T14:41:13+00:00
- Bitcoin block
- 957050
- Canonical record hash
sha256:eff5956ac1569ac84c2b6542ebe0d1356346a6c5e45d52c687e42b1c0c2d67c3- Verification API (6-check server-side result)
- https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUM72215133
- Bitcoin block existence check
- https://blockstream.info/api/block/957050
Full record
Track page: "Managua" - Live In Zagreb, November 21, 1975 · Machine-readable JSON-LD