Blockchain Transaction Monitoring

Blockchain Transaction
Monitoring

Monitor USDT and USDC payments across 5 chains. Use HD wallets for automatic address derivation or add your own static addresses. Detect incoming transfers, get instant webhook notifications.

API

Integration & Webhooks

Watch-Only

Your Keys, Your Control

SaaS

Multi-Tenant Monitoring

Features

Everything you need to monitor payments

A complete blockchain monitoring toolkit for businesses accepting USDT and USDC on TRC20, BEP20, ERC20, Polygon, and Arbitrum.

Real-Time Monitoring

Continuous blockchain scanning for incoming USDT and USDC transfers. Automatic detection across TRC20, BEP20, ERC20, Polygon, and Arbitrum with configurable polling intervals.

Webhook Notifications

HMAC-SHA256 signed webhooks delivered to your server when payments are detected. Automatic retry with exponential backoff and delivery tracking.

Flexible Wallet Modes

Use HD wallets (xPub) for automatic address derivation, or add your existing static addresses directly — perfect for small merchants with just one or two addresses. Share addresses across multiple concurrent payments with intelligent amount matching. Watch-only — your private keys never leave your device.

REST API

Clean, documented API to create monitoring requests, check payment status, and manage projects. Per-project API keys with role-based access.

Multi-Project

Run multiple projects from a single account. Each project gets its own API keys, webhook URL, and isolated payment data.

Secure by Design

Non-custodial architecture. Rate limiting, HMAC verification, 2FA support, and encrypted credentials. We never touch your funds.

Telegram Notifications

Get instant Telegram alerts when payments arrive, expire, or need attention. Connect your account in seconds and choose which events to receive.

How It Works

From wallet to webhook in minutes

PayzCore monitors your blockchain addresses and notifies you when payments arrive. You keep full control of your funds.

Step 1

Add Your Wallet

HD Wallet: import an xPub for automatic address derivation. Static Wallet: add your existing addresses — no xPub needed. Perfect for merchants with 1–2 addresses. Watch-only — no private keys needed.

Step 2

Create a Project

Get your API key and configure a webhook URL. Use our REST API to create monitoring requests from your application.

Step 3

We Monitor

PayzCore continuously scans all supported blockchains for incoming USDT and USDC transfers to your monitored addresses.

Step 4

Get Notified

When a payment is detected, we send an HMAC-signed webhook to your server and an instant Telegram alert to your phone.

WalletAddressScanWebhook
Watch-only. We never access your funds.

Pricing

Simple, transparent pricing

Start free, upgrade when you need more. Pay with USDT only.

Free

$0/month
  • 2 projects
  • 2 wallets
  • 5 chains, USDT + USDC
  • 100 webhooks/day
  • 500 API calls/day
  • Telegram notifications
  • Email support
Get Started
Popular

Pro

$29/month

Paid in USDT

  • 5 projects
  • 5 wallets
  • 5 chains, USDT + USDC
  • 10,000 webhooks/day
  • 25,000 API calls/day
  • Telegram notifications
  • Priority support
Upgrade to Pro

Small merchant? Add a single USDT address and accept payments in minutes. No xPub knowledge required.

Pay with USDT. Your wallet, your funds, your control. No credit cards, no intermediaries.

Technology

Modern stack, proven results

TypeScriptNext.jsNode.jsPostgreSQLRedisDockerREST APIWebhooksHMAC-SHA256TRC20BEP20ERC20PolygonArbitrumHD WalletsStatic Wallets

Disclaimer: PayzCore provides blockchain monitoring and payment notification tools. We do not provide payment processing services, financial services, or act as a payment institution. Our software operates in watch-only mode — it monitors blockchain activity but does not hold, transmit, or custody funds on behalf of any party.

Users register to use our blockchain monitoring tools under their own responsibility. All users are solely responsible for ensuring compliance with applicable laws and regulations in their jurisdictions. Payment for Pro plan is accepted in USDT only.

Ready to start monitoring?

Create your free account and start monitoring blockchain payments in minutes. No credit card required.