Overview
ISSN validation — validates an ISSN (International Standard Serial Number, ISO 3297) via its mod-11 check digit, handling the 'X' check character, and normalizes the NNNN-NNNC format. ISSN identifies
Protocol
x402
Price
$0.0050
Payment Asset
USDC
Payment Network
Base
Category
data
Provider
GoCreative AI
Source
self-registered
Indexed
2026-07-01 19:03:16
Health
Status
healthy
Latency (p50)
493ms
Uptime (30d)
100.0%
Reliability Score
95/100
Last Checked
2026-09-09 10:50:34
Last Healthy
2026-09-09 10:50:34
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-09-09 10:50:34 | healthy | 402 | 188ms | |
| 2026-09-09 02:59:09 | healthy | 402 | 496ms | |
| 2026-09-08 18:24:58 | healthy | 402 | 252ms | |
| 2026-09-08 04:20:09 | healthy | 402 | 165ms | |
| 2026-09-08 00:36:22 | healthy | 402 | 208ms | |
| 2026-09-07 14:29:46 | healthy | 402 | 766ms | |
| 2026-09-07 00:26:06 | healthy | 402 | 755ms | |
| 2026-09-06 18:46:37 | healthy | 402 | 493ms |