Sepolia

Name: viem-go
Author: viem-go

Sepolia testnet chain definition and usage for development and testing

Sepolia is an Ethereum testnet used for development and testing. viem-go does not ship a built-in definitions.Sepolia; define it with DefineChain and the same chain.Chain struct, then pass a pointer to your clients.

Import

import (
  "github.com/ChefBingbong/viem-go/client"
  "github.com/ChefBingbong/viem-go/client/transport"
  "github.com/ChefBingbong/viem-go/chain"
)

Usage

Define the Sepolia chain once (e.g. in an init or package var) and pass a pointer when creating clients.

import (
  "log"

  "github.com/ChefBingbong/viem-go/client"
  "github.com/ChefBingbong/viem-go/client/transport"
  "github.com/ChefBingbong/viem-go/chain"
)

var Sepolia = chain.DefineChain(chain.Chain{
  ID:   11155111,
  Name: "Sepolia",
  NativeCurrency: chain.ChainNativeCurrency{
      Name:     "Sepolia Ether",
      Symbol:   "ETH",
      Decimals: 18,
  },
  BlockTime: int64Ptr(12),
  Testnet:   true,
  RpcUrls: map[string]chain.ChainRpcUrls{
      "default": {
          HTTP: []string{"https://rpc.sepolia.org"},
      },
  },
  BlockExplorers: map[string]chain.ChainBlockExplorer{
      "default": {
          Name:   "Etherscan",
          URL:    "https://sepolia.etherscan.io",
          ApiURL: "https://api-sepolia.etherscan.io/api",
      },
  },
})

func int64Ptr(n int64) *int64 { return &n }

func main() {
  publicClient, err := client.CreatePublicClient(client.PublicClientConfig{
      Chain:     &Sepolia,
      Transport: transport.HTTP("https://rpc.sepolia.org"),
  })
  if err != nil {
      log.Fatal(err)
  }
  defer publicClient.Close()
}

Chain properties

Property	Value
ID	`11155111`
Name	`"Sepolia"`
Native currency	Sepolia Ether (ETH), 18 decimals
Testnet	`true`
Default RPC	`https://rpc.sepolia.org` (or your own endpoint)
Block explorer	sepolia.etherscan.io

Faucets

Get testnet ETH from public faucets, for example:

Go notes

No built-in: There is no definitions.Sepolia in viem-go. Use chain.DefineChain(chain.Chain{...}) as above and keep the result (e.g. package-level var); pass &Sepolia to clients.
RPC URL: You can use Sepolia.DefaultRpcUrl() if your definition's RpcUrls["default"].HTTP[0] is set, or pass any Sepolia RPC URL to transport.HTTP(...).