OrderFulfilled (Seaport) event signature and topic0

import { createPublicClient, http, parseAbiItem } from "viem"
import { mainnet } from "viem/chains"

const client = createPublicClient({ chain: mainnet, transport: http() })

const logs = await client.getLogs({
  address: "0x0000000000000068f116a894984e2db1123eb395",
  event: parseAbiItem("event OrderFulfilled(bytes32 orderHash, address indexed offerer, address indexed zone, address recipient, (uint8,address,uint256,uint256)[] offer, (uint8,address,uint256,uint256,address)[] consideration)"),
  fromBlock: "latest",
})

for (const log of logs) console.log(log.args) // { orderHash, offerer, zone, recipient, offer, consideration }

import { Interface, JsonRpcProvider } from "ethers"

const provider = new JsonRpcProvider(process.env.RPC_URL)
const iface = new Interface(["event OrderFulfilled(bytes32 orderHash, address indexed offerer, address indexed zone, address recipient, (uint8,address,uint256,uint256)[] offer, (uint8,address,uint256,uint256,address)[] consideration)"])

const logs = await provider.getLogs({
  address: "0x0000000000000068f116a894984e2db1123eb395",
  topics: [iface.getEvent("OrderFulfilled")!.topicHash],
})

for (const log of logs) console.log(iface.parseLog(log)?.args)

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "eth_getLogs",
  "params": [
    {
      "address": "0x0000000000000068f116a894984e2db1123eb395",
      "topics": [
        "0x9d9af8e38d66c62e2c12f0225249fd9d721c54b83f48d9352c97c6cacdcb6f31"
      ],
      "fromBlock": "latest"
    }
  ]
}

event OrderFulfilled(bytes32 orderHash, address indexed offerer, address indexed zone, address recipient, (uint8,address,uint256,uint256)[] offer, (uint8,address,uint256,uint256,address)[] consideration);

// inside a function:
emit OrderFulfilled(orderHash, offerer, zone, recipient, offer, consideration);