add Rootstock network: RSK Mainnet and RSK Testnet

packages/chains/README.md

@@ -79,6 +79,8 @@ const { chains, provider } = configureChains(
 - `polygonMumbai`
 - `pulsechain`
 - `pulsechainV4`
+- `rskMainnet`
+- `rskTestnet`
 - `skaleBlockBrawlers`
 - `skaleCalypso`
 - `skaleCalypsoTestnet`

packages/chains/src/index.ts

@@ -93,6 +93,8 @@ export { qTestnet } from './qTestnet'
 export { rollux } from './rollux'
 export { rolluxTestnet } from './rolluxTestnet'
 export { ronin } from './ronin'
+export { rskMainnet } from './rskMainnet'
+export { rskTestnet } from './rskTestnet'
 export { saigon } from './saigon'
 export { scrollSepolia } from './scrollSepolia'
 export { scrollTestnet } from './scrollTestnet'

packages/chains/src/rskMainnet.ts

@@ -0,0 +1,36 @@
+import { Chain } from './types'
+
+export const rskMainnet = {
+  id: 30,
+  name: 'RSK Mainnet',
+  network: 'rsk',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'RSK Mainnet',
+    symbol: 'RBTC',
+  },
+  rpcUrls: {
+    public: {
+      http: ['https://public-node.rsk.co'],
+    },
+    default: {
+      http: ['https://public-node.rsk.co'],
+    },
+  },
+  blockExplorers: {
+    etherscan: {
+      name: 'RSK Explorer',
+      url: 'https://explorer.rsk.co',
+    },
+    default: {
+      name: 'RSK Explorer',
+      url: 'https://explorer.rsk.co',
+    },
+  },
+  contracts: {
+    multicall3: {
+      address: '0xca11bde05977b3631167028862be2a173976ca11',
+      blockCreated: 4249540,
+    },
+  },
+} as const satisfies Chain

packages/chains/src/rskTestnet.ts

@@ -0,0 +1,36 @@
+import { Chain } from './types'
+
+export const rskTestnet = {
+  id: 31,
+  name: 'RSK Testnet',
+  network: 'rsktestnet',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'RSK Testnet',
+    symbol: 'tRBTC',
+  },
+  rpcUrls: {
+    public: {
+      http: ['https://public-node.testnet.rsk.co'],
+    },
+    default: {
+      http: ['https://public-node.testnet.rsk.co'],
+    },
+  },
+  blockExplorers: {
+    etherscan: {
+      name: 'RSK Testnet Explorer',
+      url: 'https://explorer.testnet.rsk.co',
+    },
+    default: {
+      name: 'RSK Testnet Explorer',
+      url: 'https://explorer.testnet.rsk.co',
+    },
+  },
+  contracts: {
+    multicall3: {
+      address: '0xcA11bDe05977B3631167028862BE2A173976cA11',
+      blockCreated: 2771150,
+    },
+  },
+} as const satisfies Chain