BTCPay Server

BTCPay Server is an incredibly radical, fiercely ideological disruptor that completely annihilated the "Middleman" model of payment processing. While BitPay charges a 1% fee, BTCPay Server is a 100% free, open-source mathematical engine. It is not a SaaS company; it is software that a merchant physically installs on their own private server. It is the absolute weapon of choice for hardcore Bitcoin maximalists who refuse to pay fees to corporate gateways. Its signature feature is "Absolute Mathematical Sovereignty." There is no company. There is no KYC. There is no middleman. The merchant runs the BTCPay code on an AWS server. When a customer pays, the mathematical transaction routes directly from the customer's wallet into the merchant's hardware wallet (like a Ledger or Trezor). The merchant mathematically pays 0% in processing fees, completely eliminating the entire payment gateway industry. It heavily dominates the "Censorship Resistance" sector. If a merchant is selling something controversial, a corporate gateway (like Stripe or BitPay) can mathematically freeze their account and confiscate their money. BTCPay Server cannot be frozen because there is no central authority. It mathematically guarantees that as long as the Bitcoin network is running, the merchant can receive money from anywhere on earth, completely uncensorable.