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About CoinPay

CoinPay is a cryptocurrency payment gateway, escrow, and wallet service built for modern e-commerce and for AI agents.

What We Do

We enable online merchants to accept Bitcoin, Ethereum, Solana, Polygon, and USDC payments for a 0.5% transaction fee. Customers pay to an address we derive, and our monitor forwards the balance to your wallet — usually well under a minute after confirmation. We hold the key to that address until the forward completes, so payments pass through us rather than around us.

Our web wallet is genuinely non-custodial: its keys are generated in your browser and never reach our servers. Our default escrow is genuinely custodial: we hold the funds for the length of the job. We describe each one as what it is, and spell out the whole picture here — including what happens to your funds if we shut down, and who decides disputes.

Why CoinPay?

  • 0.5% transaction fee - Lower than traditional processors
  • Non-custodial web wallet - Your keys never leave your browser
  • 2-of-3 multisig escrow - We hold one key of three, never enough to act alone
  • Real-time processing - Instant payment detection
  • Multi-chain support - BTC, ETH, SOL, POL, USDC
  • Simple integration - RESTful API and webhooks
  • MIT licensed - The server handling your funds is public and auditable

Built By

CoinPay is developed by Profullstack, Inc. — a team dedicated to building practical blockchain solutions for real businesses.