Public address ethereum

Now, unlike Bitcoin, Ethereum has the same addresses on both the main and all test networks. Users specify the network that they want to use later in the process when they make and sign a transaction. To make an address from the public key, all we need to do is to apply Keccak to the key and then take the last 20 bytes of the result. No other hash functions, no Base58 or any other conversion.

Initially, there were no checksum mechanisms to validate the integrity of the key. However, in , Vitalik Buterin introduced a checksum mechanism, which has since been adopted by wallets and exchanges. Adding a checksum to the Ethereum wallet address makes it case-sensitive. First, you need to get the Keccak hash of the address. Note that this address should be passed to the hash function without the 0x part.

Second, you iterate over the characters of the initial address. Finally, you add 0x back at the start of the resulting string. The checksum address is the same as the initial one if you ignore the case. But the uppercase letters let anyone check that the address is indeed valid. You can find the algorithm of the checksum validation at the page linked here. All we need to do is to apply the ECDSA to public key, then apply Keccak, and finally take the last 20 bytes of that hash. It should take you to a page like this.

The extension is accessible in the top right corner with the puzzle piece icon, if you click that, you can click the pin to make it easier to find. After you pin the extension you'll see it in the top right of your browser here.

Step 2. Create your Wallet Now that you installed MetaMask, you have the browser extension. You'll then get to a page that looks like this. Since this is our first time trying it, we'll select "Create a Wallet. I'll select "No Thanks. This will unlock the MetaMask extension on your computer. Type in your password and click "Create. I'd recommend watching it. Step 3. Next you'll be presented with your Secrete Backup Phrase. This may also go by other names, like recovery phrase, or wallet seed phrase.

This is your super secret password which provides access to your wallet. If you lose this phrase, you lose access to your tokens. If someone else gets this phrase, they get access to your wallet. Click to reveal the secret words.

This is a 12 word phrase.

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The Ethereum address is the "public" address that you would need to receive funds from another party. To access funds in the address, you must have its private key. Kindly exercise duty of care when handling your private key as they can be used to access all the funds in an address. A wallet is an interface that you may use to manage your Ethereum account as well as its public and private key pair.

Contract Address Contract address refers to the address hosting a collection of code on the Ethereum blockchain that executes functions. These functions of a contract address are executed when a transaction with associated input data contract interaction is made to it.

Addresses are represented as key-value pairs with keys and values separated with a forward slash. For example, the multiaddr for a node with IPv4 address The hexadecimal node-ID is encoded in the username portion of the URL separated from the host using an sign. The port in the hostname section is the TCP listening port. They supercede multiaddr's and enodes. These are especially useful because they allow greater informational exchange between nodes. The ENR contains a signature, sequence number and fields detailing the identity scheme used to generate and validate signatures.

The ENR can also be populated with arbitrary data organized as key-value pairs.