Chain

{
  "chainid": string,
  "name": string,
  "address": string,
  "tx": string,
  "testnet": boolean
}

{
  "chainid": "11155111",
  "name": "Sepolia",
  "address": "https://sepolia.etherscan.io/address/",
  "tx": "https://sepolia.etherscan.io/tx/",
  "testnet": true
}