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[WIKI] nexus market online Technical

Nexus Market Technical Documentation

Complete nexus market online technical specifications, API endpoints, escrow protocol details, PGP 2FA implementation, XMR wallet integration, vendor dashboard features. January 2026 architecture.

/technical index
Architecture Overview
nexus-api:~$ curl -X POST /api/v2/escrow/init
pgp-auth:~$ gpg --clearsign /tmp/2fa-challenge
xmr-wallet:~$ multisig 2-of-3 escrow.init
[01] System Architecture

nexus market online Infrastructure

Tech Stack

  • Node.js v20 + Express
  • PostgreSQL 16 (encrypted)
  • Redis 7 (session cache)
  • Tor hidden service v3
  • Rate limiting: 10req/min

Load Balancing

  • 4 onion endpoints
  • Geo-distributed relays
  • CDN-free static assets
  • Connection pooling
  • 99.9% uptime SLA

Security Layers

  • PGP 2FA mandatory
  • XMR multisig escrow
  • Tor-only access
  • LUKS disk encryption
  • Fail2ban + iptables
[02] API Documentation

nexus market online REST API v2

Authentication

POST /api/v2/auth/login
Content-Type: application/json
{
"username": "user",
"pgp_signature": "-----BEGIN PGP..."
}

Headers: X-PGP-Fingerprint: B59D3C5F...

Listings API

GET /api/v2/listings?category=drugs&min_rating=4.5&limit=50
Response: {
"listings": [15,247],
"pagination": {...}
}
Endpoint Method Rate Limit Auth
/api/v2/auth/login POST 5/min PGP 2FA
/api/v2/listings GET 30/min Optional
/api/v2/escrow/init POST 10/hour Required
[03] XMR Escrow Protocol

Multisig 2-of-3 Escrow System

Escrow Flow

  1. Buyer → POST /api/v2/escrow/init
  2. Generate 2-of-3 multisig
  3. Buyer deposit → 6 confirms
  4. Vendor ships → FE window
  5. 2-of-3 signatures → release

Wallet Addresses

  • Deposit: Fresh subaddress
  • Escrow: Multisig 2-of-3
  • Minimum: 0.001 XMR
  • Confirmations: 6 blocks
  • Fee: 0.0001 XMR

Dispute Resolution

  • 7-day FE window
  • PGP-signed evidence
  • Market 2-of-3 arbiter
  • 50% dispute fee
  • Appeal: PGP moderator
[04] PGP 2FA Implementation

4096-bit RSA Clearsign Protocol

Challenge Format

2FA Challenge v2
Timestamp: 2026-01-13T12:00:00Z
UserID: abc123xyz
Nonce: 7f8e9d4c2b1a
----- END CHALLENGE -----

gpg --clearsign challenge.txt → paste signature

Key Requirements

  • Primary: RSA 4096-bit
  • Subkey: 4096-bit signing
  • Expiration: ≤ 1 year
  • Verification: GPG fingerprint
  • Timeout: 30 seconds
[05] Vendor Dashboard

Advanced Vendor Features

Analytics

  • Real-time sales dashboard
  • Order completion rate
  • Dispute statistics
  • Buyer PGP contacts
  • Escrow balance tracker

Bulk Tools

  • Bulk listing import (CSV)
  • Auto PGP encryption
  • Shipment tracking
  • Message templates
  • Price auto-adjust

Automation

  • Auto FE (configurable)
  • Low-stock alerts
  • Dispute templates
  • PGP key rotation
  • API webhook support
[SPECS] Feature Matrix

Nexus Market vs Competitors

Feature Nexus Other Markets
PGP 2FA
4096-bit		 ❌ None / Weak
XMR Escrow
2-of-3		 ⚠️ Centralized
Vendor Analytics
Real-time		 ❌ Basic
API Access
v2 Full		 ❌ Limited