Notes on backend architecture, MPC systems, and infrastructure routing.https://sings.dev/enhttps://sings.dev/en/posts/purpose-driven-systems/https://sings.dev/en/posts/purpose-driven-systems/A simple cycle for systems that last, and how superpowers turns that cycle into a tool.Sat, 09 May 2026 00:00:00 GMThttps://sings.dev/en/posts/macos-terminal-hangul-1/https://sings.dev/en/posts/macos-terminal-hangul-1/Why Korean text and sorting look broken on some macOS terminals — the root cause is NFC vs NFD.Tue, 09 Dec 2025 00:00:00 GMThttps://sings.dev/en/posts/safe-random-types/https://sings.dev/en/posts/safe-random-types/How TRNGs and CSPRNGs produce safe random numbers, and how to use them across operating systems and programming languages.Tue, 02 Jan 2024 00:00:00 GMThttps://sings.dev/en/posts/safe-random-history/https://sings.dev/en/posts/safe-random-history/From coin tosses and dice to a computer's pseudo-random output — why we need random numbers and why naive randomness isn't enough.Mon, 01 May 2023 00:00:00 GMThttps://sings.dev/en/posts/ethereum-vs-eos-winner/https://sings.dev/en/posts/ethereum-vs-eos-winner/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.Thu, 06 Dec 2018 00:00:00 GMThttps://sings.dev/en/posts/scatter-transactions/https://sings.dev/en/posts/scatter-transactions/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.Wed, 14 Nov 2018 00:00:00 GMThttps://sings.dev/en/posts/scatter-account-binding/https://sings.dev/en/posts/scatter-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.Fri, 19 Oct 2018 00:00:00 GMThttps://sings.dev/en/posts/eosjs-token-transfer/https://sings.dev/en/posts/eosjs-token-transfer/Use the eosjs transaction method to send tokens that live in custom contracts on EOS.Thu, 04 Oct 2018 00:00:00 GMThttps://sings.dev/en/posts/eosjs-coin-transfer/https://sings.dev/en/posts/eosjs-coin-transfer/Install and configure eosjs, then use the transfer method to send EOS coins.Thu, 27 Sep 2018 00:00:00 GMThttps://sings.dev/en/posts/eos-dawn-architecture/https://sings.dev/en/posts/eos-dawn-architecture/How EOS's nodeos, cleos, and keosd fit together — plus the configuration and start/stop scripts that make running a node painless.Sun, 20 May 2018 00:00:00 GMThttps://sings.dev/en/posts/eos-dawn-installation/https://sings.dev/en/posts/eos-dawn-installation/Building EOS, then running nodeos and cleos.Thu, 17 May 2018 00:00:00 GMThttps://sings.dev/en/posts/ethereum-keystore-decryption/https://sings.dev/en/posts/ethereum-keystore-decryption/How a private key is recovered from an Ethereum KeyStore file — password verification, mac comparison, AES decryption — plus follow-up questions on the design.Tue, 08 May 2018 00:00:00 GMThttps://sings.dev/en/posts/ethereum-keystore-encryption/https://sings.dev/en/posts/ethereum-keystore-encryption/How an Ethereum KeyStore file holds and encrypts a private key, walked through step by step — ECDSA, Scrypt, AES, and SHA3-256.Sun, 25 Mar 2018 00:00:00 GMT