🧪 Blockchain Blockchain Development Simulation

This simulator walks through what actually happens between clicking "send" and a transaction being final on-chain. Broadcast transfer transactions, deploy a tiny smart contract, and call it — each one lands first in the mempool with a randomized gas price. A miner then greedily fills a gas-limited block with the highest-paying pending transactions, hashes the block against its predecessor, and appends it to the chain, at which point (and only then) the deployed contract's on-chain counter actually updates. It's a concrete, hands-on illustration of mempool economics, block gas limits, hash-chaining, and the deploy-then-call lifecycle that underlies every smart-contract platform.