Engineering
Engineering
How we build — paymasters, MPC key generation and the SDKs.
Engineering
Engineering
Designing 2-of-2 MPC Key Generation for Self-Custody
No single private key is ever generated. Here's how Furlpay splits signing across a device passkey share and an HSM policy share.
June 28, 2026 · 6 min read
Engineering
Engineering
Bypassing the Gas Crisis: ERC-4337 Paymasters on L2 Networks
Nobody should need ETH just to send USDC. How Furlpay uses ERC-4337 account abstraction and Paymasters to make gas disappear.
June 15, 2026 · 5 min read
Engineering
Engineering
Solving Card Declines: Time-Locked Pre-Authorization Escrows
Why self-custodial cards get declined at gas pumps and hotels — and how Furlpay's time-locked escrow contracts fix pre-authorization holds.
June 1, 2026 · 5 min read
Engineering
Engineering
The Death of the Seed Phrase: WebAuthn & Device Trust
Furlpay replaces the 12-word seed phrase with phishing-resistant WebAuthn passkeys bound to your device's secure hardware.
May 28, 2026 · 5 min read