metamask-extension VS ganache

Have an Ethereum wallet, preferably Metamask installed.

A  Metamask Account.

Plenty of projects are source-available, but not open source, and get tons of issues, and even contributions (https://github.com/MetaMask/metamask-extension off the top of my head)

You can create an attestation based on an existing schema or create your own. Schemas define the format in which attestations will be made, and in this case, we will use the Is Human schema to attest that the owner of a certain address is human. For this example, you only need to connect your Metamask wallet (or any wallet) to Scroll Sepolia, then enter the address you want to attest and click Make attestation. You can choose whether you want the off-chain attestation, i.e., free, obtained only by signing a transaction. Alternatively, you can choose to make it on-chain and pay for the transaction to make it public and connect it to smart contract logic. In this case, you will need to obtain funds in Scroll Sepolia through a Scroll Sepolia Faucet.

Metamask (9000 GitHub Stars) https://github.com/MetaMask/metamask-extension

For this tutorial you will need Metamask or other wallet of your choice, with Scroll Sepolia funds that you can get from a Sepolia faucet and then bridge them to L2 using the Scroll Sepolia bridge. Alternatively, you can use a Scroll Sepolia Faucet to get funds directly on L2.

16) Open Metamask app. In this instruction we will use Metamask extension for Chrome browser.

> I get a 3-5 sec lag on launch [0] as it prepares the browser to block ads.

uBO is typically ready in a fraction of second, so "3-5 sec" is not normal. In Firefox all extensions sit in the same process, so it's possible another extension is preventing uBO to be ready in a timely manner, this has happened[1].

[1] https://github.com/MetaMask/metamask-extension/issues/13163

To set up your Ganache, head to the website, choose your operating system, download it, and then run the application. To set up your account with Metamask, do this:

Blockchain Simulator: Ganache

Learners get hands-on experience with tools like Infura and Truffle Ganache, which are some of the most popular and widely used development tools in the Ethereum ecosystem that are focused on making Solidity easy to use. And as a product of ConsenSys, the Developer Program provides a direct link to the ConsenSys ecosystem, with access to some of the best resources and tools in the industry.

We recommend using Ganache to develop your smart contract first on a local blockchain on your machine. Each account in Ganache comes pre-loaded with test Ether, so you’re all set from the start.

Remember, smart contracts are immutable. Once they are deployed on mainnet, they can’t be modified. So it’s important to make sure they work before deploying. To get around this, we will test the functionalities of our DAO on a local instance of the Ethereum blockchain. This is made possible by Truffle’s Ganache—a one-click way to create a personal and local Ethereum blockchain.

Ganache might be an option for you? https://trufflesuite.com/ganache/

Restarting Ganache Restarting Computer Uninstalling from Applications and Reinstalling Ganache Downloaded Ganache from (https://trufflesuite.com/ganache/)

Ganache - A personal blockchain for Ethereum development.

Truffle & Ganache

Once you have a smart contract underway, you’ll need to test it on a blockchain. This is where Ganache comes in. Ganache is a locally hosted blockchain that simulates Ethereum on your machine. It allows you to use console.log in solidity, fork mainnet (or any other Ethereum network), set mining options, and impersonate real accounts, among other things.