Notes & experiments
The garden.
Things learned, ideas explored, and useful details kept along the way.
All notes
1–12 of 170
- A Dogecoin testnet wallet and transaction notebook
An older TypeScript PSBT experiment with derivation, P2PKH inputs, fee estimates, and broadcast handling.
Blockchain / Tools & experiments - A draggable circular-crop experiment in Flutter
An older overlay and capture implementation with distinct display, geometry, and output-file boundaries.
Mobile & interfaces - A Flutter focus request that fought the keyboard
Why dismissing focus inside build can repeatedly undo a user's text-field interaction.
Mobile & interfaces - A Flutter form that scrolls around the keyboard
An older Scaffold and Android launch-theme example for a screen with several text fields.
Mobile & interfaces - A Guava ListenableFuture duplicate-class error
An older Android dependency conflict between Guava and the standalone listenablefuture artifact.
Mobile & interfaces - A historical BlockCypher transaction-signing client
Transaction proposal, local signing, and broadcast are separate trust boundaries in this older Bitcoin example.
Blockchain - A historical Flutter starter-template checklist
An earlier template's structure, localization, environment entry points, tests, and release preparation.
Mobile & interfaces / Tools & experiments - A historical Flutter WebRTC release-only class lookup failure
The JNI class-lookup error and keep rules recorded around an older Android shrinking configuration.
Mobile & interfaces - A historical note on Base and L2 comparisons
Keep architecture, transaction cost, inclusion latency, and finality as separate comparison questions.
Blockchain - A historical PancakeSwap testnet deployment notebook
Keep the factory, router, pair bytecode hash, SDK, and frontend on the same deployment record.
Blockchain / Tools & experiments - A historical password-CSV import route into Keychain
An earlier browser-mediated import sequence, with the plaintext export boundary kept explicit.
Tools & experiments - A historical Solidity 0.4.21 ERC20 token experiment
Contract compilation, wallet deployment, source verification, and explorer indexing from an older testnet walkthrough.
Blockchain