Technical explainers, troubleshooting playbooks, and infrastructure guidance shaped by the questions developers search for.
Learn how to migrate from deprecated Solana getConfirmed* RPC methods to the canonical getBlock, getSignaturesForAddress, getTransaction, and getSlot family with explicit commitment.
Read articleLearn how to decode Ethereum revert reasons and custom errors from JSON-RPC responses, including Error(string), Panic(uint256), and custom error selectors.
Read articleLearn to use eth_call's state override set to simulate calls against modified state—no transaction needed. Includes viem/ethers examples.
Read articleLearn to read and fix Solana simulateTransaction preflight errors: decode instruction index, program ID, and custom error codes from JSON-RPC logs.
Read articleLearn to decode Polkadot RPC 1010 Invalid Transaction tags and dispatch errors, with a runnable @polkadot/api script and fix checklist.
Read articleDecode Hyperliquid /info and /exchange order rejections: margin, risk limits, open interest caps, oracle price checks, and post-only guardrails.
Read articleLearn what an Ethereum archive node stores, how to query historical balances, logs, and state via RPC, and how to verify your endpoint actually serves archive data.
Read articleLearn how Polygon PoS archive nodes work, how to query historical balances, state, and logs over JSON-RPC, and how to verify your endpoint truly serves archive data.
Read articleLearn how to query historical Base state and logs over OP-Stack JSON-RPC, what an archive node is on Base, and how to verify past balances, storage, and proofs with eth_getProof.
Read articleLearn how to parse Solana versioned transactions (v0) returned by getBlock and getTransaction, including address lookup tables, version flags, and decoding steps with a runnable script.
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