Studio notes
Notes on iPhone apps, the web, backends and Ethereum smart contracts, written so that the people who commission software can follow them.
RSS feedBackend
How to build a webhook handler that survives duplicate and out-of-order deliveries: signature checks, an event ID table, one transaction and an outbox.
Smart contracts
How to give each module of an upgradeable Solidity protocol its own ERC-7201 storage namespace: naming, the erc7201 builtin, safe struct changes and tests.
Smart contracts
How Solidity's layout at specifier and the new erc7201 builtin move contract storage, how that differs from ERC-7201 namespaced structs, and the pitfalls.
Smart contracts
A practical layout for a Solidity protocol: interfaces, core and periphery, modules that own their state, libraries and inheritance, and why each matters.
Smart contracts
How the first-depositor inflation attack steals from ERC-4626 vault users, with worked numbers, and how virtual shares and internal accounting stop it.
Web
The choices behind our own website: static HTML with Astro, under 2 KB of JavaScript, CSS-only animation, structured data, and no cookie banner.
Smart contracts
A practical guide to Foundry invariant tests for DeFi lending protocols: handlers, bounded inputs, ghost variables, time travel, and the invariants worth checking.
Smart contracts
How UUPS, beacon and transparent proxies work, what each costs, where they go wrong, and how to choose an upgrade pattern for an Ethereum protocol.
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