⚡Flashbots

MEV Protection focuses on protecting users from vulnerabilities such as front-running in Ethereum transactions. This is achieved through integration with Flashbots' solutions.

/getflashbotblocks

Get details of the flashbot blocks.

GET https://api.expand.network/chain/getflashbotblocks

Query Parameters

Name	Type	Description
chainId	String	Refer to the Chain ID page for details.
chainSymbol	String	Refer to the Chain ID page for details.

Sample Request

https://api.expand.network/chain/getflashbotblocks?chainId=1

Sample Response

{
    "status": 200,
    "msg": "success",
    "data": {
        "paris": 1,
        "blocks": [
            {
                "block_number": 18974792,
                "miner_reward": "17726971662419410",
                "fee_recipient_eth_diff": "17726971662419410",
                "miner": "0xDAFEA492D9c6733ae3d56b7Ed1ADB60692c98Bc5",
                "fee_recipient": "0xDAFEA492D9c6733ae3d56b7Ed1ADB60692c98Bc5",
                "coinbase_transfers": "0",
                "eth_sent_to_fee_recipient": "0",
                "gas_used": 8039689,
                "gas_price": "2204932511",
                "effective_priority_fee": "2204932511",
                "transactions": [
                    {
                        "transaction_hash": "0xa34125f19982fdcd8f8ac012b7924ecf145d9f1c5a5aae060b68e7d0b403c491",
                        "tx_index": 0,
                        "bundle_type": "flashbots",
                        "bundle_index": 0,
                        "block_number": 18974792,
                        "eoa_address": "0x5DB4b98e3deF62f0fce1267Db1d77639C43C3B14",
                        "to_address": "0x77E06c9eCCf2E797fd462A92B6D7642EF85b0A44",
                        "gas_used": 106331,
                        "gas_price": "31119562123",
                        "coinbase_transfer": "0",
                        "eth_sent_to_fee_recipient": "0",
                        "total_miner_reward": "3308974160100713",
                        "fee_recipient_eth_diff": "3308974160100713"
                    },
                    {
                        "transaction_hash": "0x5719b3ee2891cd3d4bdbcf3d5d3b41fb2f68f3e027ee825b84ca4b6b51ddef8d",
                        "tx_index": 0,
                        "bundle_type": "mempool",
                        "bundle_index": 1,
                        "block_number": 18974792,
                        "eoa_address": "0xFB12622b729599db9c30469bD36787cA2e9413c3",
                        "to_address": "0x04d44A44E0be0a692938baeC467F22c4dBDF719b",
                        "gas_used": 21000,
                        "gas_price": "17607123388",
                        "coinbase_transfer": "0",
                        "eth_sent_to_fee_recipient": "0",
                        "total_miner_reward": "369749591148000",
                        "fee_recipient_eth_diff": "369749591148000"
                    }
                ]
            },
            {
                "block_number": 18974736,
                "miner_reward": "24107460683890845",
                "fee_recipient_eth_diff": "24107460683890845",
                "miner": "0xDAFEA492D9c6733ae3d56b7Ed1ADB60692c98Bc5",
                "fee_recipient": "0xDAFEA492D9c6733ae3d56b7Ed1ADB60692c98Bc5",
                "coinbase_transfers": "0",
                "eth_sent_to_fee_recipient": "0",
                "gas_used": 17311402,
                "gas_price": "1392577024",
                "effective_priority_fee": "1392577024",
                "transactions": [
                    {
                        "transaction_hash": "0xa049c8a8ce354fca67277d7218fd4b70c798d6c92d7e2ab5779d644187dfa0bb",
                        "tx_index": 0,
                        "bundle_type": "flashbots",
                        "bundle_index": 0,
                        "block_number": 18974736,
                        "eoa_address": "0x000812de2241aB594aE154060028F70F39DAE000",
                        "to_address": "0x00fa0B420C3119F473c2463104FB9d4E91E445af",
                        "gas_used": 21000,
                        "gas_price": "26962839990",
                        "coinbase_transfer": "0",
                        "eth_sent_to_fee_recipient": "0",
                        "total_miner_reward": "566219639790000",
                        "fee_recipient_eth_diff": "566219639790000"
                    },
                    {
                        "transaction_hash": "0x09486a4e90887c631f3dbb2f33a4c0d700f7079e48eba48580f4d74ade51f5fc",
                        "tx_index": 1,
                        "bundle_type": "flashbots",
                        "bundle_index": 0,
                        "block_number": 18974736,
                        "eoa_address": "0x00fa0B420C3119F473c2463104FB9d4E91E445af",
                        "to_address": "0x6B175474E89094C44Da98b954EedeAC495271d0F",
                        "gas_used": 47018,
                        "gas_price": "26962839990",
                        "coinbase_transfer": "0",
                        "eth_sent_to_fee_recipient": "0",
                        "total_miner_reward": "1267738810649820",
                        "fee_recipient_eth_diff": "1267738810649820"
                    }
                ]
            }
        ],
        "latest_block_number": 18974792
    }
}

/getflashbottransactions

Get details of the flashbot transactions.

GET https://api.expand.network/chain/getflashbottransactions

Query Parameters

Name	Type	Description
chainId	String	Refer to the Chain ID page for details.
chainSymbol	String	Refer to the Chain ID page for details.

Sample Request

https://api.expand.network/chain/getflashbottransactions?chainId=1

Sample Response

{
    "status": 200,
    "msg": "success",
    "data": {
        "transactions": [
            {
                "transaction_hash": "0xbcf55b7e9488135c12f3e70bd2a191cc19913475de6937f54cb9843865416391",
                "tx_index": 0,
                "bundle_index": 21,
                "block_number": 18975317,
                "eao_address": "0x2aC74Bd02EE017fa05629432Dd3728720c455032",
                "to_address": "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
                "gas_used": 30428,
                "gas_price": "10000002",
                "coinbase_transfer": "0",
                "eth_sent_to_fee_recipient": "0",
                "total_miner_reward": "304280060856",
                "fee_recipient_eth_diff": "304280060856"
            },
            {
                "transaction_hash": "0xd441a44e2adf57f0d53e027d4441cdfee8653cd7f259ec0c90b60ea144b31d32",
                "tx_index": 0,
                "bundle_index": 20,
                "block_number": 18975317,
                "eao_address": "0x758aC3DC8FB6F939adf42bB83e717f94619052f5",
                "to_address": "0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789",
                "gas_used": 118712,
                "gas_price": "11300000",
                "coinbase_transfer": "0",
                "eth_sent_to_fee_recipient": "0",
                "total_miner_reward": "1341445600000",
                "fee_recipient_eth_diff": "1341445600000"
            },
            {
                "transaction_hash": "0x02cbeb153f91225abcdad3cd4d39d457b5e13f3fb1191f26c73c328c50f54071",
                "tx_index": 0,
                "bundle_index": 19,
                "block_number": 18975317,
                "eao_address": "0x4a25D28d10B02BCF13a16068F56d167D8F96d093",
                "to_address": "0x5FF137D4b0FDCD49DcA30c7CF57E578a026d2789",
                "gas_used": 181502,
                "gas_price": "12500000",
                "coinbase_transfer": "0",
                "eth_sent_to_fee_recipient": "0",
                "total_miner_reward": "2268775000000",
                "fee_recipient_eth_diff": "2268775000000"
            },
            {
                "transaction_hash": "0x2b89ed3dbfe8946229468f33e31ed447631c192906344b7c62b6e927a7a5a512",
                "tx_index": 12,
                "bundle_index": 18,
                "block_number": 18975317,
                "eao_address": "0x4960DC043DDc244A02192898B3e2F1730194F0ac",
                "to_address": "0xf2B2420CEff184EEc76B3de15bd90C5734e45449",
                "gas_used": 21000,
                "gas_price": "10000001",
                "coinbase_transfer": "0",
                "eth_sent_to_fee_recipient": "0",
                "total_miner_reward": "210000021000",
                "fee_recipient_eth_diff": "210000021000"
            }
        ],
        "latest_block_number": 18975317
    }
}

/getflashbotbundle

Get details of the specified flashbot bundle.

GET https://api.expand.network/chain/getflashbottransactions

Query Parameters

Name	Type	Description
chainId	String	Refer to the Chain ID page for details.
chainSymbol	String	Refer to the Chain ID page for details.
bundleHash*	String	The bundle hash.

Sample Request

https://api.expand.network/chain/getflashbotbundle?bundleHash=0x2228f5d8954ce31dc1601a8ba264dbd401bf1428388ce88238932815c5d6f23f

Sample Response

{
    "status": 200,
    "msg": "success",
    "data": {
        "transactions": [
            {
                "transaction_hash": "0xd9cdf1483a85aa206625c66fea49059b96ffae1c086f76664cfa3f91a495d73a",
                "tx_index": 0,
                "bundle_index": 3,
                "block_number": 9091437,
                "eao_address": "0x8D460B72eaF3d63830E16C22d1Fc6908D0834Abe",
                "to_address": "0x8D460B72eaF3d63830E16C22d1Fc6908D0834Abe",
                "gas_used": 21000,
                "gas_price": "1000000000",
                "coinbase_transfer": "0",
                "eth_sent_to_fee_recipient": "0",
                "total_miner_reward": "21000000000000",
                "fee_recipient_eth_diff": "21000000000000"
            }
        ]
    }
}

/sendtransaction

Send transaction on the chain.

POST https://api.expand.network/chain/sendtransaction

Request Body

Name	Type	Description
rpc	String	Remote procedural call URL.
chainId	String	Refer to the Chain ID page for details.
chainSymbol	String	Refer to the Chain ID page for details.
rawTransaction*	String	The encoded transaction, obtained from the signed transaction.
bdnTransaction	Boolean	If true, then txn goes through the bdn route, which speeds up the transaction process. By default, false.
mevProtection	Boolean	If true, then txn goes through flashbots.

Sample Request

With mevProtection: true

{
    "chainId":"1",
    "rawTransaction": "0xf8a68205180f82753e94dc31ee1784292379fbb2964b3b9c4124d8f89c6080b844a9059cbb000000000000000000000000a67e9b68c41b0f26184d64c26e0b2b81466e5994000000000000000000000000000000000000000000000000000000174876e8002ea0952b0468aff066f3e00a1d476b8894d84bfc47a1a3cdab9d6809a3461cc713e5a018219ee382aa3c7edf73a87bd8a75e2c40a97efbdf56a6cfd353af06fb74101d",
    "mevProtection": true
}

Sample Response

With mevProtection: true

{
    "status": 200,
    "msg": "success",
    "data": {
        "txHash": "0xd9cdf1483a85aa206625c66fea49059b96ffae1c086f76664cfa3f91a495d73a"
    }
}