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Build a Fintech App with Stablecoin on Solana
A builder's guide to creating a fintech app with embedded wallets and stablecoin payments on Solana — from architecture decisions to production deployment.
Engineering
Build a Fintech App with Stablecoin on Solana
A builder's guide to creating a fintech app with embedded wallets and stablecoin payments on Solana — from architecture decisions to production deployment.
12 min readHow to Set Up Gasless Transactions
A step-by-step guide to implementing gasless transactions on Ethereum and Solana using Openfort's paymaster infrastructure. Sponsor gas fees for users and AI agents with code examples, policy configuration, and real-world best practices.
8 min readHow to Build an Agent Wallet
Build an agent wallet using Openfort backend wallets. Create a TEE-secured wallet, upgrade it with EIP-7702 delegation, set up USDC gas sponsorship, and send transactions on Base Sepolia.
9 min readHow to Build Wallet Permissions with Session Keys
Build wallet permissions using session keys on smart accounts. Learn to grant agents time-limited, revocable spending power without transferring custody.
7 min readHow to Build a Neobank: The PM's Guide for the Stablecoin Era
A product manager's guide to scoping and building a stablecoin neobank. Covers architecture decisions, vendor evaluation, compliance planning, team requirements, timelines, and actionable checklists.
30 min readTechnical Dive: Key Permissions for Accounts
A comprehensive guide to onchain and offchain permission systems for accounts. Learn how to implement granular access control with spending limits, contract whitelisting, and time-based restrictions.
10 min readTechnical Dive: Gas Sponsorship via Paymasters
Gas sponsorship is one of the most transformative capabilities of Account Abstraction. This document provides a comprehensive technical breakdown of how paymasters work, covering both Verifying Mode and ERC-20 Mode, including all eight ERC-20 sub-modes, the on-chain validation and execution lifecycle, paymasterData encoding, gas considerations, and security trade-offs.
13 min readThe Agentic Wallet Problem
How to give software a spending account without becoming a bank.
11 min readParallelizable Paymasters in EntryPoint v0.9
A full breakdown of Openfort Paymaster v9: async signing, support for ERC-20 gas sponsorship, and protocol updates from EntryPoint v0.9 for better UX & scalability.
6 min readFrom spikes to stable: eRPC in production at Openfort
What broke, what we fixed, and what we gained moving our multi-chain RPC from an in-house Elastic stack to eRPC—with hedging, batching, and clean metrics.
8 min readHow to Avoid Wallet Vendor Dependency
Vendor lock-in is one of the biggest hidden risks in wallet infrastructure. This guide explores two strategic approaches to maintain independence
5 min readHow to Migrate from Web3Modal
This guide provides a step-by-step process to migrate your React app from Web3Modal to Openfort React
4 min readIntroducing Multi Accounts Support
These accounts can live on the same chain or across different chains, giving end users and developers more flexibility in how they organize and interact with on-chain assets.
2 min readHow to Migrate from RainbowKit
This guide provides a step-by-step process to migrate your React app from RainbowKit to Openfort React
3 min readGuide for App Developers: Leveraging EIP-7702 Enabled Wallets in Your dApp
This guide provides a concise, actionable roadmap for integrating EIP-7702 enabled wallets into your decentralized application (dApp), focusing on detecting support, wallet interactions.
7 min readBuilding a Passwordless EVM Wallet
This guide, inspired by Openfort's demonstration of EIP-7702 with ERC-4337, will walk you through creating a passkey wallet where users interact with the blockchain using familiar biometric credentials.
10 min readWhat does the Openfort Delegator Account (7702) include?
Openfort has developed a new delegator contract leveraging EIP-7702, aimed at augmenting Externally Owned Accounts (EOAs) with smart contract capabilities.
8 min readExploring EIP-7702: Part 1
Learn about EIP-7702, a next ethereum wallet upgrade for secure, flexible smart contract wallet usage
8 min readEmbedded Wallets Explained (2026 Guide for Developers)
Learn how embedded wallets work, why seedless onboarding converts, and how to ship in-app signing, 4337/7702, and paymaster-powered "gasless" UX—without handling private keys.
8 min readAnnouncing Openfort for Solana
Openfort supports Solana and can now help your project create wallets, sign signatures and send transactions.
3 min read4x size reduction in Openfort JS
Boost performance with 4x smaller SDKs, manage multiple wallets with Shield V2's Keychain, and get started faster with Marti's video guide.
2 min readMobile Wallet Protocol for Unity, a public good
This powerful feature is now available to all game developers, enabling seamless connections between in-game wallets and the broader Web3 ecosystem.
4 min readEIP-7702 Deep Dive: Using Smart EOAs
Upgrade Ethereum EOAs to smart EOAs and understand extra functionality with ERC-4337 compatibility accounts.
9 min readUnderstanding Native Account Abstraction in RIP-7560
Explore how RIP-7560 transforms Ethereum's account abstraction, slashing gas costs and enhancing scalability. Can this protocol-level change redefine blockchain usability?
7 min readShamir Secret Sharing Library Audited
Discover how Openfort's Shamir’s Secret Sharing (SSS) cryptography library passed audit testing to ensure a more secure wallet infrastructure
5 min read2D Nonce: Transaction Parallelization
See how Openfort’s 2D nonce model helps developers execute multiple blockchain transactions in parallel without compromising order or finality
8 min readEIP-3074 to EIP-7702: Advancing Ethereum Account Abstraction
Explore EIP-7702, the innovative upgrade refining EIP-3074. Uncover how temporary smart contract roles enhance Ethereum security and simplify transactions.
3 min readPasskeys and Account Abstraction
Passkeys are becoming an ever increasing option for users to sign transaction with their hardware devices. Let's explore how!
4 min readAA and MPC: A Practical Approach to Security
Explore the real-world benefits of account abstraction and multiparty computation (MPC) in delivering secure and scalable crypto applications
4 min readModular Wallets: Enabling Vertical Wallets at Scale
Discover how modular wallet architecture transforms crypto wallets into scalable vertical solutions for diverse applications.
3 min readUnderstanding Crypto Wallets: Evolution & Future Trends
Discover how crypto wallets evolve from speculation tools to user-friendly, multi-functional solutions. Embrace innovation and unlock blockchain potential.
4 min read