How To Sync Entire Ethereum Client in 2-3 hours for Testnets & Mainnet –

Most people spend hours and days synchronizing their Go Ethereum application to start developing Ethereum or Solidity. But they faced loads of problems doing that and eventually became frustrated resulting in no progress or major delays in development.

There are many reasons for this:

  1. Go Ethereum Client for Mainnet need to sync the whole Blockchain which has many GB now. Not everyone has a 1TB HD, especially MacBook owners.
  2. Sync is very slow, for my Ubuntu machine it took over a month on EC2 server with very fast internet. So it’s not internet problem.
  3. Many synchronization errors stop the synchronization process resulting in starting from scratch.
  4. There is so much confusion about which testnet node is running when the network is switched to Testnet because there is no clear name. Ropsten, Kovan, Rinkbey are some good testnets for testing. The Ethereum & Mist Wallet does not show you the name of the test network easily.

If all of the above issues bother you then you must switch to Ethereum’s Parity node which is designed to fix these problems. Not only does this sync everything quickly, but it also gives you a very nice Dapp browser & web interface to interact with the Ethereum network along with other powerful features.

Equality to the rescue

Parity is an Ethereum node designed to overcome many of the problems that exist in other Ethereum wallets and applications (Ethereum & Mist wallets). According to their website “the fastest and lightest Ethereum app and built directly into your web browser. Using it, you can access all the features of the Ethereum network including powerful Decentralized applications and a multitude of cryptocurrencies issued on Ethereum. ”

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Below is the screen of parity UI after installation. As you can see in the bottom right corner, it is connected to Ropsten testnet.

How to sync an Ethereum client in hours and get it ready for testing and development quickly

How to install parity?

Currently, Parity is available in Ubuntu, Mac, Windows and as Docker Images. Installing parity in Mac & Ubuntu is as simple as typing a single command.

[pastacode lang=”bash” manual=”bash%20%3C(” message=”One-line installer of Parity in Mac or Ubuntu” highlight=”” provider=”manual”/]

For windows you can download the installed parity from here.

As for the Docker image, you can download it from the same link above.

Once Parity is installed, it’s time to start it using the terminal.

How to use Parity?

Before running parity, you can optionally install geth & ethminer in your system to be able to mine some test ethers for testing.

Install Geth

If you haven’t already, to install geth use the instructions from this link, keep in mind that no synchronization is needed here. We just want you to install it. Although installing geth is completely optional.

Install ethminer

Ethminer is an ethereum miner for mining blocks into the Blockchain network. If connected to the testnet, it will mine the testnet for test ethers. That’s exactly what we want. So we will connect to ropsten testnet and then try to mine some ropsten ETH. You can install ethminer following the instructions in this link.

Launch Parity with Ropsten as Testnet

[pastacode lang=”bash” manual=”parity%20–chain%20ropsten” message=”” highlight=”” provider=”manual”/]

The above command will launch the parity node in testnet ropsten. The screen will look like this below. Please note that this process will take 2-3 hours to synchronize the entire Ropsten Blockchain and will take very little space. This is much faster and faster than an Ethereum wallet or a Mist wallet that takes days.

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Launch Parity node in ropsten as Testnet for Ethereum client in few hours

This is how the web interface will look like.

Parity interface running in ropsten testnet in ethereum application

You can now go to the menu item “Contracts” at the top

How to develop Ethereum smart contract by parity faster than anything else.

Parity smart contract development interface for ethereum-based decentralized application

Before deploying any smart contract in Ropsten, you will need some Ropsten Ethers in your account. To receive ETH Ropsten, you must follow the instructions below.

  • Option 1: You can use Faucet to get ETH to start your experiment. Check out this Ropsten faucet here.
  • Option 2: Mine your own ETH. You have to wait a few hours to get Ropsten ETH in your account.

How to mine ETH for development?

Important: You don’t need any advanced & specific hardware for mining ETH mining as this is very easy to get everyone ready for development quickly.

Before you start mining Ropsten ETH, you must have an etherbase account to receive your ETH.

Step 1: To do that, first go to the account menu item in your parity web interface and then click create account to create a new account. Remember that your first Ropsten Account will be your etherbase account.

Step 2: Make sure you have ethminer installed as mentioned at the beginning of this article.

Step 3: Stop the parity node (if it is running) and restart it with the command below.

[pastacode lang=”bash” manual=”parity%20–chain%20ropsten%20–author%20%3Cyour%20etherbase%20account%3E” message=”” highlight=”” provider=”manual”/]

by using above command parity will collect all mined ETH in mentioned account.

Step 4: Now launch ethminer in new terminal with below command.

[pastacode lang=”bash” manual=”ethminer” message=”” highlight=”” provider=”manual”/]

Now you will see the message as shown in the image below. It will take some time to generate a DAG (Guided Circle Graph) and then start mining. Leave the machine overnight to receive about 50-100 ETH for the testing process. This much ETH will be good enough for the testing process.

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How to mine Ropsten Ether ifor development test in Ethereum smart contract development in Mac Windows

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