ex-Trust Wallet · Rust · SwiftUI

Hi, I'm Tao 👋Blockchain & software engineer in Tokyo

I build crypto wallet infrastructure, cross-platform SDKs, and native macOS & iOS apps — and write about the journey here.

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// recent work

Selected projects

jayjay

Rust

SwiftUI

macOS

Jujutsu

A native macOS GUI for Jujutsu (jj) with a DAG, side-by-side diffs, interdiff, and conflict resolution. Built with Rust and SwiftUI.

hw-core

Rust

Hardware Wallet

Trezor

BLE

Cross platform hardware wallet interface. A Rust-based library implementing low-level wallet functionality, including Trezor Host Protocol.

Solana Primitives

Rust

Blockchain

Solana

SDK

A Rust crate providing fundamental data structures and tools for constructing and submitting Solana transactions.

App Detective

Swift

macOS

Reverse Engineering

Diagnostics

A tool to detect macOS apps' GUI tech stack, helping developers understand the underlying technologies used in applications.

Inspect

Swift

TLS

OpenSSL

iOS

Inspect is an action extension (works in both Safari, Chrome and Edge) that allows you to inspect and export website's https certificate information.

GhostTile

ObjcC

XPC

Code injection

macOS

Hide your running applications from Dock like a charm.

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// writing

From the devlog

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Closing Loops

Apr 22, 2026

Three old apps, a decade apart — and what rewriting them taught me about indie dev in the AI coding era.

Rewriting GhostTile for Modern macOS

Apr 22, 2026

GhostTile was my first polished paid Mac app. This is the story of why it faded, why I rewrote it, and why I am making the new repo public.

Do AI Agents Really Need New Wallets?

Feb 15, 2026

AI agents don't need new wallets. They need a protocol to talk to the ones you already trust.

Native Obsession

Jun 4, 2025

Exploring the philosophy of embracing native environments from hardware to cloud, crypto and AI.

Crypto Security Practices Through the Years

Jul 20, 2024

Exploring the evolution of security practices in the crypto space, from password managers to advanced data protection.

Broken Money: How Our Financial System is Failing Us

Jun 4, 2024

An insightful exploration of the history and development of money, the current failures of our financial system, and the rise of Bitcoin as open source money.