Guides
How to watch what matters on EVM chains, with working code: the RPC calls, the APIs, and the places where a homemade script quietly stops working.
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How to watch ERC-20 Transfer events with eth_getLogs (and where polling breaks)
The Transfer topic hash, cast logs and ethers v6 examples, and the failure modes of a polling loop: public-RPC range limits, reorgs and cursor handling.
Updated
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Sizing a low-gas balance threshold for relayers on Base, Arbitrum and OP Mainnet
What an L2 transaction really costs (execution plus L1 data), how to measure a relayer’s burn rate from receipts or balances, and a worked burn rate × lead time threshold.
Updated
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Monitoring a Safe multisig with the Safe Transaction Service API
Owners, threshold, modules, guard and the pending queue from api.safe.global: chain short names, API keys, the legacy-host redirect that drops your key, and a working watcher.
Updated