Repository

https://github.com/steemit/steem

Intro

Following HF20 that took place few days back, and as we are starting to operate normally again on the Steem blockchain, I had tested out the long awaited functionality of discounted accounts claim and creation, as we believe it has the potential to open the doors for the masses of Steem adoption.

Basically this functionality allows claiming spots of "discounted accounts creation" from a pool of spots, whereby you would consume "a large amount" of Resource Credits/RCs (Last time I checked those consumed anywhere between 12-22 MM RCs - but the numbers are still adjusting and subject to availability and different factors ) compared to prior approaches which required either paying for account creation, or delegating your SP to create the account. Once claimed, you could also create an account without any additional transaction cost.
Number of claims done shows on your account on steemd.com. The number reflects how many accounts you can create now

So few days back, I was able to claim a spot, and create an account successfully. Back then, the feature still had a bug, whereby created account has so little RCs (only 3,000 of them), which basically lead the account without any capacity to perform any activity on the BC.
Gladly this issue has now been fixed. Old affected accounts now have the minimum RCs, but also newly created accounts (we just tested this out today with another account) do have the proper minimum as well.

According to steemd.com, newly created accounts now have a full amount of 6,060,649,946 RCs, and are able to at create 3 comments. As they have 0 SP and 0 VM (Voting Mana), I do not believe they can cast any upvote. We haven't tested this out though, but it only makes sense.

So to cut the story short and move to the tutorial, my good friend and Actifit ambassador @taskmaster4450 asked me to share the script that I created few days ago, so as to provide an easy way to anyone to be able to claim discounted accounts, and create them.

Requirements

To follow the tutorial, you would need some basic HTML and Javascript knowledge, preferably some interaction with dsteem library as we utilize it to perform the actual transactions and operations with the Steem blockchain.
Although and even if you do not have any such knoweldge, you could simply open a notepad, follow the tutorial, write the text, save as HTML file, and you're good!
You will also be able to download a copy of the full code, via accessing the gist available at the end of the tutorial.

Difficulty

The tutorial should not be too difficult to pull off as explained above, and could be rated anywhere between basic and intermediate.

Tutorial Contents

So let's get started with the tutorial. First off, let's setup a small interface to allow us to accomplish what is needed within a browser. We will allow 3 options for the activity:

• Only claiming a spot for discounted account creation, as you can always claim a spot, and keep it for later account creation.
• Only creating a discounted account, as you could rely on previously claimed spots to create the account
• Do both at the same time, claiming a spot and creating the account

HTML Interface

We will just create a very minimalistic interface, that allows the entry of 4-6 types of information, depending on what we want to exactly accomplish at this instance. So we will need to capture the following using basic :

• Main Account: The account to be used to claim or create the account (input text box).
• Private Active Key: Both operations require using your private active key (input text box).
• New Account Name: In case you are aiming to create an account at the moment (input text box).
• New Account Pass: The password for the new account. We recommend making the password as complex as possible. You could easily use http://passwordsgenerator.net/ for creating such complex password (input text box).
• Operation Checkboxes: Checkboxes for the operation(s) that will be carried out now, whether a Claim or a Create. (input checkbox).
• Proceed button: The button to kick start the activity. (input checkbox).
• Notification: A small div area to display error and success messages. (input button).

The below simply code accomplishes this

        Main Account:<input type="text" id="main_account"><br/>
        Private Active Key:<input type="text" id="private_key"><br/>
        New Account Name:<input type="text" id="new_account"><br/>
        New Account Pass:<input type="text" id="new_account_pass"><br/>
        Claim <input type="checkbox" id="claim_op" name="claim_op">
        Create <input type="checkbox" id="create_op" name="create_op"><br/>
        <div id="error_section"></div>
        <input type="button" value="proceed" id="create_claim">

Import jQuery and dSteem libraries

I personally love working with jQuery, although we could make use without it, but we will utilize it for smooth usage and access to fields and function calls.
I recently started using dSteem since HF20 as SteemJS had some troubles with returning data during HF20, and I had to switch to it to get some of my scripts running. Although SteemJS is now fully functional, dSteem is better supported by Steemit, and also is reportedly faster.
Let us include both scripts into our code head section

        <script src="https://unpkg.com/dsteem@latest/dist/dsteem.js"></script>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

EDIT: As of recent changes to dsteem with the release of a newer version, the latest script no longer functions, the workaround/fix for this is instead of using the latest dsteem library, you need to use version 0.10.0 instead, so your code becomes

        <script src="https://unpkg.com/[email protected]/dist/dsteem.js">
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

Let's Perform Action!

So now that we setup the interface and pulled the libraries, we need to create our actual function that handles the claim and/or create, and finally connect it to our button click function.

So first, as some function calls to dSteem will be asynchronous, we will setup the function as async
async function claimCreate()
Following, we will clear all text messages at the start of the function, and then start pulling the data as filled in the interface we created above

//clear messages text
                    $('#error_section').text('');
                    
                    let creator = $('#main_account').val();
                    
                    //active key is required
                    let creatorKey = $('#private_key').val();
                    
                    if (creator == '' || creatorKey == ''){
                        $('#error_section').text('Please enter your account name and private active key to proceed.');
                        return;
                    }

Once we grabbed the essential info, we will need to connect to a Steem node, and a typical node would be https://api.steemit.com .

//connect to node
var client = new dsteem.Client('https://api.steemit.com');

We will also need to properly format the Active key we pulled from the user to confirm to dSteem requirements, as follows:

//dsteem requires this to properly format keys
                    let privateKey = dsteem.PrivateKey.fromString(
                                        creatorKey
                                    );

Having done the above, we are now ready to check which operation has been selected, and to proceed accordingly. We do this by testing each checkbox and seeing if it is in checked state, if not we will skip this operation. If no operation is selected, we will not perform any action on the Steem BC.
Now if the claim operation is selected, we will need to create the relevant operation. The official statement by Steemit was that the "fee" parameter was optional, yet after a lot of testing, it turns out it needs to be passed, with the value of '0.000 STEEM'. So does the extensions param, although it is not used as the moment, making the code as follows

if ($('#claim_op').is(':checked')){
                        //the claim discounted account operation
                        const claim_op = [
                            'claim_account',
                            {
                                creator: creator,
                                fee: '0.000 STEEM',
                                extensions: [],
                            }
                        ];
                        ops.push(claim_op);
                        proceed = true;
                    }

In case the create operation is selected, we will need to grab the user and pass fields, and then ensure the account does not already exist on the Steem BC, create the keys based on the provided password, and then prepare the relevant operation, as follows:

if ($('#create_op').is(':checked')){
                        let username = $('#new_account').val();
                        let password = $('#new_account_pass').val();
                    
                        //check if account exists       
                        const _account = await client.database.call('get_accounts', [[username]]);
                        //account not available to register
                        if (_account.length>0) {
                            console.log('account already exists');
                            console.log(_account);
                            $('#error_section').text('Account name already exists. Please choose a different one');
                            return;
                        }

                        console.log('account available');
                                    
                        //create keys for new account
                        const ownerKey = dsteem.PrivateKey.fromLogin(username, password, 'owner');
                        const activeKey = dsteem.PrivateKey.fromLogin(username, password, 'active');
                        const postingKey = dsteem.PrivateKey.fromLogin(username, password, 'posting');
                        let memoKey = dsteem.PrivateKey.fromLogin(username, password, 'memo').createPublic();
                        
                        //create auth values for passing to account creation
                        const ownerAuth = {
                            weight_threshold: 1,
                            account_auths: [],
                            key_auths: [[ownerKey.createPublic(), 1]],
                        };
                        const activeAuth = {
                            weight_threshold: 1,
                            account_auths: [],
                            key_auths: [[activeKey.createPublic(), 1]],
                        };
                        const postingAuth = {
                            weight_threshold: 1,
                            account_auths: [],
                            key_auths: [[postingKey.createPublic(), 1]],
                        };
                        
                        //the create discounted account operation
                        const create_op = [
                            'create_claimed_account',
                            {
                                creator: creator,
                                new_account_name: username,
                                owner: ownerAuth,
                                active: activeAuth,
                                posting: postingAuth,
                                memo_key: memoKey,
                                json_metadata: '',
                                extensions: [],
                            }
                        ];
                        
                        ops.push(create_op);
                        proceed = true;
                    }

Now that we have prepared the relevant operation(s), we are ready to execute them on Steem using the client.broadcast.sendOperations dSteem function, and hence the remainder of the code would be as such

if (proceed){
                        //proceed executing the selected operation(s)
                        client.broadcast.sendOperations(ops, privateKey).then(
                            function(result) {
                                console.log(result);
                                $('#error_section').text('success');
                            },
                            function(error){
                                $('#error_section').text(error);
                            }
                        );
                    }else{
                        console.log('no operation selected');
                        $('#error_section').text('Please select either Claim, Create, or both');
                    }

So there you go! This completes the tutorial of utilizing this new amazing functionality.

Working Code

You can download a fully functional copy of this work via visiting this gist that I created, download it as an HTML file, and open it in your browser, and you're set to claim and/or create your first discounted account on the Steem Blockchain.