The Ethereum Blockchain

Differences Between Wallet Types (e.g., Private Key vs Keystore)

What are the different types of private key formats that I can use to access my wallet? The ETH is stored on the blockchain. Your private key, Keystore file, or whatever piece of information you have proves ownership of that ETH, which allows you to move it. At the end of the day, you are always signing with your private key. However, for additional functionality (like protecting it with a password), there are different formats and ways of storing your private key: MetaMask Learn More Here…

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Ethereum Address Has Uppercase and Lowercase Letters

What does it mean if my address has uppercase and lowercase letters? There are two versions of Ethereum addresses: one that contains uppercase letters and one that does not. 0x7cb57b5a97eabe94205c07890be4c1ad31e486a8 0x7cB57B5A97eAbe94205C07890BE4c1aD31E486A8 The one that is all lowercase is "not checksummed," meaning that you could mistype a letter or number, send it off, and it would be lost forever. If you use the checksummed version and mistype it, it will tell you that it's an invalid…

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Getting Back to the Basics: 10 Tips for Beginners

Tips Never hand type your address. If you copy and paste your address, do it in incognito mode and still take the time to double-check the address. This attack has not been seen yet, but a lot of Chrome extensions have access to the information that you copy and paste. Most extensions do not have access to incognito tabs by default, but you can change this in your settings. (Contributed by @RaymondDurk - Thank You!) Use the version of your address that has uppercase letters. Ethereum…

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Links you should read next

The Ethereum Wiki CryptoList: Curated collection of blockchain & cryptocurrency links. EthList: The Crowdsourced Ethereum Reading List What is An Ethereum Token: The Ultimate Beginner’s Guide Goldman Sachs on Blockchains Sebfor: What is Ethereum – The Ultimate Guide CoinCenter / Vitalik: What is Ethereum a16z: Blockchain Building Blocks and Basics. silentcicero: Pro Tips for Ethereum Wallet Management The CryptoCurrency Education Thread Where To Start Fresh After The Crypto Crash The Ultimate…

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More Help, Support, and Communities

General Questions and Ethereum Questions: /r/ethereum Questions: Stack Exchange Getting Started: Reddit Guide for Noobs: /r/ethereumnoobies for Development: /r/ethdev Giveth Slack: Giveth Slack Clients / Wallets / Interfaces Geth: Gitter Mist: Gitter Parity: GitHub · Gitter Metamask: Slack · Support MyCrypto…

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Should I keep my ETH and tokens in a single or multiple addresses?

MyCrypto is a front-end interface that enables you to interact directly with the Ethereum blockchain. Any Ethereum address can receive and store Ethereum-based tokens ("ERC-20" tokens). MyCrypto enables you, through the interface, to send tokens from your address, view your token balance, etc. However, MyCrypto's existence has no bearing on your address's ability to receive tokens. Whether you store all your ETH and tokens in the same address is up to you. Some people prefer to have different…

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What Are Internal Transactions?

Internal transactions, despite the name (which isn't part of the yellow paper but is a convention people have settled on), are not actual transactions. They are also not included directly in the blockchain; they are value transfers that were initiated by executing a smart contract (smart contract Ether or token transfer). Certain Ether and token transfers require calling a smart contract to perform the action. These show up as internal transactions and are not indicated in the main ETH…

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What is nonce?

In Ethereum, every transaction has a nonce. The nonce is the number of transactions sent from a given address. Each time you send a transaction, the nonce increases by 1 . There are rules about what transactions are valid, and the nonce is used to enforce some of these rules. Specifically: Transactions must be in order: You cannot have a transaction with a nonce of 1 mined before one with a nonce of 0 . No skipping! You cannot have a transaction with a nonce of 2 mined if you have not…

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What is WalletConnect?

WalletConnect is an open protocol made to facilitate a secure connection between mobile cryptocurrency wallets and desktop applications, such as dapps. Transactions are made through an encrypted connection by scanning a QR code, and are confirmed on the mobile device. As the private key never leaves the user’s device, their funds are never at risk and the possibility of a hijack is very low. WalletConnect was initially shared with the public by Richard Burton in 2018 , and is in active…

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A Glossary of Common Terms in the Ethereum and Crypto Space

Words are Hard This is a list of terms you might encounter when using the MyCrypto interface. Asset MyCrypto uses the umbrella term “asset” to refer to any cryptocurrency or token. Cryptocurrency A digital store of value that uses complex cryptography to secure financial transactions, control the creation of additional units, and/or verify the transfer of other assets or property. Possession of cryptocurrencies and their activity are tracked using immutable distributed ledger technology, most…

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Is the Blockchain Private?

Picture a spreadsheet that is duplicated thousands of times across a network of computers. Then imagine that this network is designed to regularly update this spreadsheet and you have a basic understanding of the blockchain. — What is Blockchain Technology? A Step-by-Step Guide For Beginners by Blockgeeks The blockchain is a public , distributed ledger. It allows anyone, anywhere to view and verify the transactions executed on it. In fact, the primary value of blockchains is that they remove…

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What is gas?

Introduction Ethereum is the network, also known as the blockchain. Ether (ETH) is the fuel for that network. When you send tokens, interact with a contract, send ETH, or do anything else on the blockchain, you must pay for that computation. That payment is calculated in gas, and gas is paid in ETH. You are paying for the computation , regardless of whether your transaction succeeds or fails. Even if it fails, the miners must validate and execute your transaction (compute) and therefore you…

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