BTCPay Server: Zero-Fee Crypto Payments Are Live

Date: May 18, 2026

Every payment processor charges a fee. Stripe takes 2.9% + 30¢. Coinbase Commerce takes 1%. Even most crypto processors skim something. We eliminated that entirely.

BTCPay Server: Self-Hosted, Zero Fee

BTCPay Server is open-source, self-hosted payment infrastructure. No middleman. No fee per transaction. The full payment goes directly to the treasury wallet.

We run it as primary rails for all 13 revenue crowns:

• Investor commitments ($1K–$50K)
• Hardware shop (Antminer Z15 Pro)
• Mining-as-a-Service ($5–$500)
• Arena entry fees ($10–$200)
• API subscriptions ($29–$199/mo)
• Agent marketplace ($25–$300)

The Math

At $17,600/mo projected revenue:

• Stripe would cost: $511/mo (2.9%)
• Coinbase Commerce would cost: $176/mo (1%)
• BTCPay: $0

At scale to $100K/mo, that's $2,900/mo we keep instead of giving to a payment processor.

Fallback Coverage

Not every buyer wants BTC. We cover the long tail:

NOWPayments — 200+ cryptocurrencies, 0.5% fee. Fallback when BTCPay isn't available for a specific asset. Kraken Pay — Direct Kraken rails for users who custody on Kraken. Zero slippage for ZEC, ETH, SOL, TON.

How It Works

1. Customer selects payment method at checkout
2. BTCPay generates an invoice with on-chain address
3. Customer pays — transaction hits the blockchain
4. Webhook fires to POST /api/payments/webhook/btcpay
5. Order activates automatically — no manual confirmation
6. Transaction recorded in crypto_payment_submissions

Security

Webhook integrity is verified via BTCPAY_WEBHOOK_SECRET HMAC on every inbound request. Invalid signatures are rejected before any order logic runs. The White Hat Payment Audit (/api/whitehat/audit/payments) runs 45 checks across all three payment integrations to catch configuration drift.

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Zero-fee payment infrastructure is table stakes for a DePIN platform. We're not paying 3% to process our own treasury flows.