P PAYWIN
Crypto payment gateway

Accept crypto. Built for merchants.

USDT, BTC, ETH and 8 networks. Instant settlement to your wallet, transparent fees, mandatory 2FA, and an API your developers will actually want to use.

8
Networks supported
BTC · ETH · TRC20 · BSC · SOL · XRP
1.5%
Default percentage fee
No fixed fee on basic tier
256-bit
HMAC webhook signing
Every event signed

Everything you need to accept crypto

A merchant panel + REST API designed for B2B operations, with security baked in.

Mandatory 2FA + HIBP

TOTP enrollment is required before panel access. Passwords are checked against breach lists on every set.

Argon2id at rest

Memory-hard hashing for every credential. API secrets shown once, then hashed.

Signed webhooks

HMAC-SHA256 over timestamp + body, exponential retry, full delivery log.

Native USDT-TRC20

Plus ERC20, BSC, BTC, ETH, SOL, XRP, BNB, USDC. Settlement straight to your wallet.

Append-only audit

Every state change written to merchant_audit_logs. Login attempts pruned after 90 days.

Public REST API

/api/v1 with Idempotency-Key, RFC 7807 errors, IP allowlist per key.

Start accepting crypto in minutes

Sign up, verify your email, complete 2FA setup, and grab your API key. That's it.