Tutorials
Worked, step-by-step reads of one chain's data with real limits and arithmetic.
Reading BNB Smart Chain pending transactions: txpool, subscriptions and their limits
How to see what is waiting to be mined on BSC with the three txpool methods, what the pending and queued maps mean, and a polling loop whose request budget you can work out on paper.
TRON USDT transfer history via JSON-RPC: logs, block windows and address formats
How to rebuild an address's USDT-TRC20 history from raw event logs without a third-party indexer: which filter to send, why every request covers at most 100 blocks, how to convert TRON addresses into topics, and what a year of history costs in requests.
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