Non-custodial, crypto-only payments — explained for the operators and developers who actually run the money. Pain, mechanics, and how Payzum solves it.
Yes, a crypto payment gateway can convert payments to USDC automatically. How Payzum's optional, on-chain auto-convert works, when to turn it on or leave it off, USDC vs USDT as the target, a step-by-step setup and five use cases, with Chainalysis, IRS and Circle facts checked on 11 October 2026.
On October 6, 2026, SAP launched SAP Pay, powered by Tereina, inside SAP Cloud ERP; on October 7, Circle made USDC the preferred stablecoin for eligible dollar workflows, with EURC for euros and a Circle Mint account required. The analysis: reconciliation follows whoever starts the payment. A plain USDC transfer carries no invoice number, so suppliers being paid need one payment request per invoice, an expiry and a signed paid event in their own ledger.
A buyer's checklist for small businesses choosing a stablecoin payment processor: where the money lands, how fast it's final, what a sale really costs at your average ticket, the coins and networks your customers hold, one account for the counter and the website, plugins, refunds and exit risk, and who answers when something breaks. With card-fee math checked on 19 October 2026, use cases and a side-by-side table.
Payzum has not opened a funding round yet. A raise is planned, and investors can join the waiting list at waiting.list@payzum.com. This post sets out where the company stands, how it makes money, the four parts of the investment thesis (a live product, accounting, a non-custodial model and payments for AI agents) and the risks an investor should weigh.
On October 5, 2026, cross-border payments company Conduit sued Tether in New York, alleging it has kept $2.76 million of USDT working capital frozen since September 24, 2025 in a self-custodied Fireblocks wallet that Brazil's Federal Police never flagged. The case shows self-custody and wallet separation don't stop an issuer freeze. What merchants should change: hold less per issuer, for less time, and keep records ready.
Eight crypto payment processors compared on neutral criteria: Payzum, Stripe's stablecoin payments, Coinbase Business, BitPay, CoinGate, NOWPayments, CoinPayments and BTCPay Server. What changed in 2026 (Coinbase Commerce closed, MiCA's grace period ended, Stripe settles stablecoins in dollars), the three custody models behind 'we accept crypto', a side-by-side table checked against each provider's public docs, and which type fits which online business.
Payzum publishes official, MIT-licensed SDKs for Node.js/TypeScript, PHP, Python and Rust. Each one creates an invoice in a few lines and verifies all three signed webhook families against one shared test corpus. Here is each SDK set up step by step, what they protect you from, and what they don't do yet.
On October 1, 2026, Visa cited Allium's State of Stablecoins and Payments report: $401–527 billion in identified stablecoin payments from January to August 2026, up 42–63%, with 58–64% received by businesses. B2B settlement ($137–153B), service fees ($56B), payroll ($43B) and supplier payments ($28B) each outpace retail purchases ($19B). This analysis lays out the full dataset, the caveats behind it, why stablecoin business payments look like invoices rather than shopping carts, and how a business can set up non-custodial stablecoin receivables, payouts and checkout flow by flow.
Install an open-source gateway, paste two keys and enable it for Visual Form Builder forms, and donors can give USDC or USDT on any GiveWP form. A signed webhook completes the donation, GiveWP sends its usual receipt, and the gift settles to your organization's own wallet. Here are six checks for any GiveWP crypto gateway, the Payzum plugin set up step by step, what happens at each payment status, and what it deliberately doesn't do, recurring gifts included.