An introductory Dapp to connect the blockchain to your HTML web application. It covers the essential functions of reading blockchain data and interacting with transactions sent and received. In summary:
⦁ Switch between Mainnet and Testnet. These are separate blockchains, and many of the popular blockchains feature this separate test network for you to test it without sending real funds.
⦁ Displays live blockchain data. Market price, gas fees, latest block numbers etc.
⦁ Query an address. Search a wallet address to find its recent transactions and the amount sent. Much more data can be retrieved through the API.
⦁ Query a transaction. Search a specific transaction to get details about it such as amount sent and transaction fees. Much more data can be retrieved through the API.
⦁ Receive a payment. This checks all crypto received to a specific address, so you can validate if payments are received.
⦁ 3rd party transaction validation. All the query results create a URL to a blockchain scanner such as 'Etherscan' to validate and see more data.
Choose a directory on your computer to put the project files. The dapp uses an API to access blockchain data and transactions, so you'll need to create a key and add it to your script. Open up the API company listed in 'resources' below, and a create a free account. When you get the API key, open the file variables.php. Update the variables called $api_key with your key. Sometimes you need a separate key for test net and main net.
Create a wallet:
To fully test out the application, you'll need to create blockchain transactions, so you'll need a wallet. Try the wallet recommended in the 'resources' section below. In variables.php if you replace the $payment_receive_address variables with you address, you can test sending funds to yourself to see that work.
Loading the project:
You'll need to serve the website to your browser.
⦁ Open 'Command Prompt' on Windows.
⦁ Access the folder project folder by using the 'CD' command and the file path. If your folder was located in C:\Coding Projects\dapps, then the command would be cd Coding Projects\dapps
⦁ Serve onto localhost 8000: php -S 127.0.0.1:8000
⦁ Paste 127.0.0.1:8000 URL into the browser and it will load.
⦁ Software for coding. I use Visual Studio, but any IDE you prefer is ok. 'NotePad ++" is also good.
⦁ Wallet: metamask.io. Go to https://mumbai.polygonscan.com/ and there's a metamask button to add network
⦁ Scanner: polygonscan.com
⦁ Bootstrap 5: https://getbootstrap.com/docs/5.1/getting-started/introduction/
⦁ Bootstrap 5: https://getbootstrap.com/docs/5.1/examples/
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Selecting the best website template for your business can seem like a daunting task. However, if you take the time to do your research, choose a design that meets your company’s needs, and ask the right questions, it can be a fairly easy process. You can also make the process even easier by considering these tips for finding the best website template for your business.