Essay
2026-05-09
Purpose-Driven Systems (feat. superpowers)
A simple cycle for systems that last, and how superpowers turns that cycle into a tool.
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13 posts in the archive
- Development
2025-12-09
Why macOS Terminals Mangle Korean: NFC vs NFD (1/2): NFC vs NFD
Why Korean text and sorting look broken on some macOS terminals — the root cause is NFC vs NFD.
- Development
2024-01-02
Generating Safe Random Numbers (2/2): TRNG and CSPRNG
How TRNGs and CSPRNGs produce safe random numbers, and how to use them across operating systems and programming languages.
- Development
2023-05-01
Generating Safe Random Numbers (1/2): Why it matters
From coin tosses and dice to a computer's pseudo-random output — why we need random numbers and why naive randomness isn't enough.
- Development
2018-12-06
Ethereum vs EOS: Who Wins?
A side-by-side look at Ethereum (gen 2) and EOS (gen 3) across usability, fees, and dApp adoption — and a guess at which platform might lead next.
- Development
2018-11-14
Building EOS Web Apps with Scatter (2/2): Transactions and sign-out
Use a Scatter-bound EOS account to send coins, transfer custom tokens, vote for block producers, and sign out — without ever embedding a private key in your code.
- Development
2018-10-19
Building EOS Web Apps with Scatter (1/2): Account binding
Use Scatter, a Chrome-extension key manager, to bind an EOS account to a web service without ever exposing the private key in the browser.
- Development
2018-10-04
Sending EOS and Tokens with eosjs (2/2): Token transfer
Use the eosjs transaction method to send tokens that live in custom contracts on EOS.
- Development
2018-09-27
Sending EOS and Tokens with eosjs (1/2): EOS coin transfer
Install and configure eosjs, then use the transfer method to send EOS coins.
- Development
2018-05-20
Building and running an EOS Dawn v4.0 node (2/2): Architecture and configuration
How EOS's nodeos, cleos, and keosd fit together — plus the configuration and start/stop scripts that make running a node painless.
- Development
2018-05-17
Building and running an EOS Dawn v4.0 node (1/2): Install and first run
Building EOS, then running nodeos and cleos.
- Development
2018-05-08
Inside the Ethereum KeyStore File (2/2): Decryption and follow-ups
How a private key is recovered from an Ethereum KeyStore file — password verification, mac comparison, AES decryption — plus follow-up questions on the design.
- Development
2018-03-25
Inside the Ethereum KeyStore File (1/2): Generation and encryption
How an Ethereum KeyStore file holds and encrypts a private key, walked through step by step — ECDSA, Scrypt, AES, and SHA3-256.
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