Blockchain and Web3

Code is money, so you prove it

Unit tests as the base, then static analysis across every contract, fuzzing on invariants (properties that must never break, tested against thousands of random sequences), and symbolic execution plus formal verification on the critical rules.

These tools find different things: static analysis catches known bad patterns, fuzzing finds sequences nobody would have written by hand, formal verification proves a rule holds for every possible input rather than the ones you thought to test.

Upgradeable but not arbitrary

Contracts that must evolve use upgradeable proxies, but every change goes through a mandatory delay: whoever holds funds has time to see what is about to change and to leave. Contracts that must not change — the coin, the wrapper — stay immutable and role-less.

Withdrawals carry explicit limits (a maximum daily share, for instance) and use pull instead of push: the recipient withdraws, so one badly behaved account cannot block everyone else.

A chain is infrastructure too

Behind a Layer 2 there are processes that must stay up: sequencer, public RPC node, the component posting batches to the layer below, explorer, indexing and monitoring. It is systems work as much as Solidity work, with separate networks for development, testnet and mainnet.