I build ambitious software all the way through.

From encrypted contracts and smart-account permissions to payment infrastructure and published SDKs.

6× hackathon winner

Projects

Six systems chosen for technical depth, range, and evidence of shipping, not to mirror every repository.

Featured / Cross-chain payments

Uniport

A payment SDK that lets an app receive the token it wants while the payer deposits from a different chain or asset.

The published React SDK wraps quote, deposit, and settlement tracking behind one button. It handles chain-specific constraints such as required memos, refund-address rules, token trustlines, typed errors, and display-safe amount formatting without changing settlement values.

Published npm SDK

React SDK
1Click API
TypeScript
Cross-chain routing

View project Source code Read the build article

Confidential computing

BlindProcure

Sealed-bid procurement where a contract selects the lowest valid encrypted offer without exposing supplier pricing.

Prices are encrypted in-browser with Zama FHE, compared on Sepolia, and revealed selectively with proof-backed decryption. A cross-origin-isolated popup bridges the encryption SDK’s runtime requirements with Privy authentication.

Encrypted end to end

Zama FHEVM
Solidity
Next.js
Privy

View project Source code

Wallet infrastructure

CKB KeyWay

Email-native wallet infrastructure that gives React apps a stable CKB identity and routed Fiber payments through one SDK.

Stytch OTP recovers a Lit PKP, while a pinned Lit Action signs only the validated CKB lock-group digest. The published @ckb-keyway/react package has completed a real testnet channel and independent 1 CKB payment.

Published npm SDK

CKB
Fiber
Lit PKP
React SDK

View project Source code

Delegated execution

AutoSig

Autonomous onchain portfolio rebalancing with scoped permissions, signed reports, and atomic swap execution.

A Chainlink CRE cron workflow reads allocations, computes drift, gets 1inch routes through confidential HTTP, then delivers a signed report to an ERC-7579 executor on an EIP-7702-upgraded Kernel account. No session key or broad server-held approval.

Atomic batch execution

Chainlink CRE
EIP-7702
ERC-7579
1inch

View project Source code

Realtime wallet security

ShieldAI

An autonomous wallet guardian that detects risky token approvals and revokes them through a tightly scoped delegation.

Envio indexes Approval events in real time, a Railway service analyzes bytecode for malicious patterns, and a MetaMask Hybrid Smart Account delegation permits only approve(address,uint256) calls for revocation.

Envio Bonus winner

Envio
MetaMask Delegation
OpenAI
Monad

View project Source code

Cross-chain AI compute

0friction

A TypeScript SDK and solver that lets EVM apps buy AI inference with USDC, without bridging or holding another network token.

Users authorize the request and a gasless USDC permit on Base. The solver verifies both, fronts the inference cost, processes the response, and settles USDC with an auditable onchain record.

Published npm SDK

AI inference
EIP-712
USDC
TypeScript SDK

View project Source code

Skills

The tools I use most often to take a product from interface to infrastructure.

Languages: TypeScript, JavaScript, Solidity, SQL
Frontend: React, Next.js, CSS
Smart contracts: Foundry, viem, account abstraction
Backend + data: Bun, Express, Postgres, GraphQL
Infrastructure: The Graph, Envio, Railway, Vercel

I learn unfamiliar infrastructure by shipping with it.

I’m Chris Gachau. My repositories show a progression into harder signing flows, permission systems, encrypted data, distributed state, and tools other developers can use.

I’m most interested in work where understanding the system is part of designing the product.

GitHub X Farcaster