Add Sepolia testnet to chainspec

src/models/chainspec.rs

@@ -343,6 +343,12 @@ pub struct Genesis {
     pub gas_limit: u64,
     pub timestamp: u64,
     pub seal: Seal,
+    #[serde(
+        default,
+        skip_serializing_if = "Option::is_none",
+        with = "::serde_with::rust::unwrap_or_skip"
+    )]
+    pub base_fee_per_gas: Option<U256>,
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
@@ -452,6 +458,7 @@ mod tests {
                     author: hex!("0000000000000000000000000000000000000000").into(),
                     gas_limit: 0x47b760,
                     timestamp: 0x58ee40ba,
+                    base_fee_per_gas: None,
                     seal: Seal::Clique {
                         vanity: hex!(
                             "52657370656374206d7920617574686f7269746168207e452e436172746d616e"

src/models/config.rs

@@ -31,6 +31,7 @@ impl ChainConfig {
             "mainnet" | "ethereum" => Ok(ChainConfig::from(chainspec::MAINNET.clone())),
             "ropsten" => Ok(ChainConfig::from(chainspec::ROPSTEN.clone())),
             "rinkeby" => Ok(ChainConfig::from(chainspec::RINKEBY.clone())),
+            "sepolia" => Ok(ChainConfig::from(chainspec::SEPOLIA.clone())),
             _ => Err(anyhow!(
                 "{name} is not yet supported, please fill an issue at {REPOSITORY_URL} and we'll maybe add support for it in the foreseeable future",
             )),

src/res/chainspec/mod.rs

@@ -7,6 +7,8 @@ pub static ROPSTEN: Lazy<ChainSpec> =
     Lazy::new(|| ron::from_str(include_str!("ropsten.ron")).unwrap());
 pub static RINKEBY: Lazy<ChainSpec> =
     Lazy::new(|| ron::from_str(include_str!("rinkeby.ron")).unwrap());
+pub static SEPOLIA: Lazy<ChainSpec> =
+    Lazy::new(|| ron::from_str(include_str!("sepolia.ron")).unwrap());
 
 #[cfg(test)]
 mod tests {}

src/res/chainspec/sepolia.ron

@@ -0,0 +1,73 @@
+(
+    name: "Sepolia",
+    consensus: (
+        seal_verification: Ethash(
+            duration_limit: 13,
+            block_reward: {
+                0: "0x1bc16d674ec80000",
+            },
+            homestead_formula: 0,
+            byzantium_formula: 1700000,
+            difficulty_bomb: DifficultyBomb(
+                delays: {},
+            ),
+        ),
+        eip1559_block: 0,
+    ),
+    upgrades: (
+        homestead: 0,
+        tangerine: 0,
+        spurious: 0,
+        byzantium: 0,
+        constantinople: 0,
+        petersburg: 0,
+        istanbul: 0,
+        berlin: 0,
+        london: 0,
+    ),
+    params: (
+        chain_id: 11155111,
+        network_id: 11155111,
+        min_gas_limit: 5000,
+    ),
+    genesis: (
+        number: 0,
+        author: "0x0000000000000000000000000000000000000000",
+        timestamp: 1633267481,
+        gas_limit: 30000000,
+        base_fee_per_gas: "0x3b9aca00",
+        seal: Ethash(
+            vanity: "0x5365706f6c69612c20417468656e732c204174746963612c2047726565636521",
+            difficulty: "0x20000",
+            nonce: "0x0000000000000000",
+            mix_hash: "0x0000000000000000000000000000000000000000000000000000000000000000",
+        ),
+    ),
+    balances: {
+        0: {
+            "0xa2a6d93439144ffe4d27c9e088dcd8b783946263": "0xd3c21bcecceda1000000",
+            "0xbc11295936aa79d594139de1b2e12629414f3bdb": "0xd3c21bcecceda1000000",
+            "0x7cf5b79bfe291a67ab02b393e456ccc4c266f753": "0xd3c21bcecceda1000000",
+            "0xaaec86394441f915bce3e6ab399977e9906f3b69": "0xd3c21bcecceda1000000",
+            "0xf47cae1cf79ca6758bfc787dbd21e6bdbe7112b8": "0xd3c21bcecceda1000000",
+            "0xd7eddb78ed295b3c9629240e8924fb8d8874ddd8": "0xd3c21bcecceda1000000",
+            "0x8b7f0977bb4f0fbe7076fa22bc24aca043583f5e": "0xd3c21bcecceda1000000",
+            "0xe2e2659028143784d557bcec6ff3a0721048880a": "0xd3c21bcecceda1000000",
+            "0xd9a5179f091d85051d3c982785efd1455cec8699": "0xd3c21bcecceda1000000",
+            "0xbeef32ca5b9a198d27b4e02f4c70439fe60356cf": "0xd3c21bcecceda1000000",
+            "0x0000006916a87b82333f4245046623b23794c65c": "0x84595161401484a000000",
+            "0xb21c33de1fab3fa15499c62b59fe0cc3250020d1": "0x52b7d2dcc80cd2e4000000",
+            "0x10f5d45854e038071485ac9e402308cf80d2d2fe": "0x52b7d2dcc80cd2e4000000",
+            "0xd7d76c58b3a519e9fa6cc4d22dc017259bc49f1e": "0x52b7d2dcc80cd2e4000000",
+            "0x799d329e5f583419167cd722962485926e338f4a": "0xde0b6b3a7640000"
+        },
+    },
+    p2p: (
+        bootnodes: [
+            "enode://9246d00bc8fd1742e5ad2428b80fc4dc45d786283e05ef6edbd9002cbc335d40998444732fbe921cb88e1d2c73d1b1de53bae6a2237996e9bfe14f871baf7066@18.168.182.86:30303",
+            "enode://ec66ddcf1a974950bd4c782789a7e04f8aa7110a72569b6e65fcd51e937e74eed303b1ea734e4d19cfaec9fbff9b6ee65bf31dcb50ba79acce9dd63a6aca61c7@52.14.151.177:30303"
+        ],
+        preverified_hashes: [
+        ],
+    ),
+)

src/state/genesis.rs

@@ -52,7 +52,7 @@ impl GenesisState {
             extra_data: seal.extra_data(),
             mix_hash: seal.mix_hash(),
             nonce: seal.nonce(),
-            base_fee_per_gas: None,
+            base_fee_per_gas: genesis.base_fee_per_gas,
 
             receipts_root: EMPTY_ROOT,
             ommers_hash: EMPTY_LIST_HASH,
@@ -118,7 +118,7 @@ where
         extra_data: chainspec.genesis.seal.extra_data(),
         mix_hash: chainspec.genesis.seal.mix_hash(),
         nonce: chainspec.genesis.seal.nonce(),
-        base_fee_per_gas: None,
+        base_fee_per_gas: chainspec.genesis.base_fee_per_gas,
 
         receipts_root: EMPTY_ROOT,
         ommers_hash: EMPTY_LIST_HASH,