Technical explainers, troubleshooting playbooks, and infrastructure guidance shaped by the questions developers search for.
Learn how Hyperliquid's application-level JSON ping/pong heartbeat works, why an OPEN socket can still be a zombie, and how to build a detector that reconnects before you miss fills.
Read articleHow block-range width, address filters, and positional topic arrays independently drive eth_getLogs scan cost, with a decision matrix and a self-measurement table.
Read articleWhy Monad returns 'invalid block range' for eth_getLogs, how its documented range guard differs from Ethereum, and a bounded paging algorithm that proves completeness.
Read articleHow OP Stack derivation ties every Base L2 block timestamp to an L1 origin, and how to read that provenance over RPC.
Read articleA resumable, de-duplicating walk of suix_queryTransactionBlocks that survives cursor invalidation and proves continuity with a digest watermark.
Read articleA practical RPC-first guide to reading Token-2022 transfer fees, withheld amounts, and effective post-fee balances from Solana account and transaction data.
Read articleDiagnose and fix the balance and nonce error classes returned by eth_sendRawTransaction by understanding exactly which values the node compares.
Read articleA deep-dive into Ethereum's stateful filter API: how filter IDs work, why getFilterChanges is a destructive cursor, and how to survive server-side expiry.
Read articleLearn how to obtain and interpret a Polkadot transaction fee estimate over JSON-RPC, why the estimate is state-dependent, and how to troubleshoot common failures.
Read articleA practical guide to subscribing to Hyperliquid's trades and userFills WebSocket channels, reconciling with the Info API, and avoiding duplicate fills after reconnects.
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