🔬 Quality Control
How We Verify VPN Keys
Every single proxy node passes an 8-stage verification pipeline with real proxied requests before appearing in our catalog.
1. SHA-1 Fingerprinting
Streaming normalization prevents duplicate keys across 50+ public feeds.
2. TCP Pre-Filter
1500 parallel dialers filter unreachable ports with a 2s timeout.
3. Xray-Core Batch Probing
Outbounds tested with recursive bisection on isolated local SOCKS ports.
4. Russian Probe Testing
Autonomous probe in Kemerovo tests candidate nodes against Russian ISP filtering.
Frequently Asked Questions
Troubleshooting, protocols, and client setup guidance
Why Xray-core as the sole checking engine? ▼
Xray-core represents the reference implementation for VLESS and XTLS-Reality protocols, ensuring precise real-world compatibility.
What is the role of the Russian probe? ▼
Located in Kemerovo (AS207713), the remote probe validates candidates against genuine ISP filtering inside Russia.