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Daniel Daniel

Welcome!

Hello, my name is Daniel, a software engineer and hardware hacker. For the past 5 years, I've been focused on the intersection between crypto and hardware, mainly on the DePIN space, AI, and Robotics.

I'm the co-founder of Hotspotty and DePIN Hub.
This is my corner of the internet, where I share my thoughts, projects, and ideas.

"Stay Awhile and Listen" - Deckard Cain 🎮

Recent Posts

DaysAbroad: Track How Many Days You Spend in Every Country

Automatic GPS tracking for tax residency, Schengen limits, and immigration compliance

I built DaysAbroad, a privacy-first iOS app that automatically tracks how many days you spend in each country using GPS. Useful for tax residency rules, Schengen visa limits, and immigration compliance.

How I Built a Second Brain That Actually Works

The Death of Manual Organization: AI-Native Knowledge Management for 2026 and beyond

After years of failing with Notion and Obsidian, I built an AI-powered second brain that automatically captures, classifies, and connects my thoughts -- no discipline required.

Brasil Papaya: A Music Toolkit App for iOS and Android

Tuner, metronome, sound meter and more, celebrating 30 years of Brasil Papaya

I built a free music toolkit app for the band Brasil Papaya, featuring a guitar & bass tuner, metronome, sound meter, and waveform visualizer. Available on iOS and Android.

The Case for Permanent Storage: Why I'm Betting on Arweave + ar.io

Storage isn't sexy, but it might be the most important bet in crypto

After nearly a decade of testing storage solutions, both web2 and web3, there's only one permanent storage stack I'm still bullish on: Arweave + ar.io. Here's why.

VitalTrends: A Unified Health Dashboard

All your wearable data in one place

I built a unified health dashboard that connects WHOOP and Withings data into a single view with interactive charts, trends, and CSV exports.

JPEG XL has a bright future

The future-proof image format that brings fast, high-quality web photos

JPEG XL is a next-generation image format offering superior lossless and lossy compression, fast progressive loading, and modern features