Technical explainers, troubleshooting playbooks, and infrastructure guidance shaped by the questions developers search for.
Learn how to query Substrate runtime metadata at any block, understand metadata versions, and avoid decoding failures across runtime upgrades.
Read articleUnderstand Ethereum's trace and debug RPC families, when to use trace_transaction vs debug_traceTransaction, and how to run them.
Read articleLearn how Polkadot's GRANDPA finality works and how to query, subscribe, and wait for the finalized head over JSON-RPC to avoid treating un-finalized blocks as permanent.
Read articleLearn how to detect if your RPC node is behind the chain tip, measure head lag, and avoid stale responses.
Read articleLearn how to verify Base node sync status using op-node and op-reth Engine/Admin RPC, detect stuck sync, and keep your node at the tip.
Read articleUnderstand Monad's async execution: how transaction receipts, status, and ordering differ from classic EVM chains, with a polling script.
Read articleLearn how to manage EVM nonces correctly with eth_getTransactionCount to avoid nonce too low, stuck transactions, and concurrency issues.
Read articleUnderstand Base OP-Stack finality stages and how to use safe, finalized, and latest block tags in JSON-RPC calls.
Read articleLearn how Ethereum state proofs work and how to use eth_getProof to fetch and independently verify account and storage values over JSON-RPC.
Read articleLearn how to simulate Sui transactions via JSON-RPC to catch object version conflicts, gas issues, and command failures before paying gas.
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