Indexers

const latest = await provider.getBlockNumber();
const logs = await provider.getLogs({
  address: contractAddress,
  topics: [ethers.id("Transfer(address,address,uint256)")],
  fromBlock: Math.max(0, latest - 5000),
  toBlock: latest,
});

const startBlock = deploymentBlock; // First block to scan; when resuming, use the saved cursor + 1.
const step = 10000; // Shrink the window if a request hits the 10000-log cap.
const latest = await provider.getBlockNumber();
for (let from = startBlock; from <= latest; from += step) {
  const to = Math.min(from + step - 1, latest);
  const page = await provider.getLogs({
    address: contractAddress,
    topics: [ethers.id("Transfer(address,address,uint256)")],
    fromBlock: from,
    toBlock: to,
  });
  // Process `page`, then persist `to` as the cursor.
}