When building Ethereum backend systems, things usually work fine—until they don’t. Bots fail silently. Transactions revert unexpectedly. Gas usage spikes without a clear reason. And suddenly, what looked like a simple transaction becomes opaque once it hits the network. Most of the time, the problem isn’t the smart contract itself. It’s the lack of visibility into what actually happened during execution. This is where transaction tracing becomes essential—and also where many teams hit a wall....