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On the Ethereum mainnet mining is currently done with a proof-of-work algorithm. But testnets both public and private often use a different algorithm, because the available computational power is often significantly smaller, making the network susceptible to malicious attacks.
The algorithm we will deploy for this private testnet is a proof-of-authority algorithm called Clique. Simply put, only a few privileged nodes will be allowed to mine or seal blocks in the blockchain. Puppeth can be used to deploy and manage networks such as the one we are creating here. As of writing, Puppeth are making certain assumptions about your deployment, such as all servers being remote, or using Docker.
One of the strengths of blockchain networks like Ethereum is how resilient they are, and how well they run on imperfect infrastructure. That said, server security is still important to keep private keys and certain configuration safe. However, I will keep server security such as filesystem permissions, firewall configuration out-of-scope for this blog post.
All services that we will go through can run out of separate directories on a single server, as separate servers, as Docker containers or anything else. The topology we will use in this guide is simple and consists of three hypothetical Unix-like servers, running the below services as following:. So called bootnodes are used to help nodes in the network to initiate contact, like a meeting point on the Internet.
After initial contact has been made nodes will talk directly to each other. For the purpose of this guide we will compile bootnode from source. Note that we assume that you have a working Go environment configured already. See part 4 of this series for a brief guide on setting up Go.
You will need this when starting other nodes on the network. Here I assume that you already have geth installed and functioning. We will start by creating a separate data directory and new accounts for them all. Now, repeat the same on server2 and server3. Take note of the addresses that you created for all three nodes. You will need to define these as privileged nodes when creating the genesis block for the new network.
In order to generate the genesis block for this private network we will use a utility called Puppeth. As mentioned earlier, Puppet is very useful for managing networks such as the one we are creating. Testnet Wei faucet - Wei faucet for the tesnet. Wallets To store your ethers Mist - Mist - Official wallet with integrated full node. Icebox - Lightwallet-powered cold storage solution.. How to mine Ethereum on a Windows PC? Mining pools Fell alone? Coinotron - Coinotron Pool.
Whisper an upcoming P2P messaging protocol that will be integrated into the EtherBrowser. Swarm Swarm - Swarm for Storage. Gas Gas is the fundamental network cost unit and is paid for exclusively in ether. Lists of projects State of the Dapps - State of the Dapps - an impressive list of projects. Companies Consensys - Consensys. Community Social Facebook - Facebook.
Blog - The official blog. Stack Exchange - Stack Exchange. Speciality Skype Channels Solidity and web3 - Solidity and web3. Pi Ethereum - Pi Ethereum. Miner community Support -Miner community Support. Reputation - discussion, education and delivery. Russia - Russia - Russian Etherians Russian language.
Gitter channels Go-Ethereum - Go-Ethereum. Users loose passwords all the time. Make sure in a secure maner that this doesn't affect their control over assets. DNS of blockchain world. Use human-friendly names instead of crypto addresses.
Asset Manager Admin panel with multi-sig capabilities lets you require multiple confirmations from trusted parties to securely perform management actions. More info Login Asset Wallet Web and mobile wallet applications for end-users. More info Blockchain Explorer See all transactions, addresses and technical information in web browser.
See it in action Dividend reports Token ownership report generator could be used to determine asset holders to send them ICO profits. Access report generator EToken Set of Ethereum smart contracts that are used to issue assets on blockchain.
Documentation Download Supernode Reliable blockchain access point that eliminates the need to run and manage your own Ethereum node. Set up Documentation Keystore Secure storage for encrypted wallet containers.