Madyson  Reilly

Madyson Reilly

1600181580

Build a Shopping Cart in Angular10

In this article we are going to build shopping cart frontend with Angular 10 for our application.

You can check our backend part built in Nodejs, which we already have published.

Note that you need to have the angular CLI installed on your local machine. To upgrade to Angular 10 you can follow up this tutorial.

To start up we need to setup our application directory. Create an angular-cart directory in your desktop and run this command to setup a new angular project:

cd desktop
mkdir angular-cart && cd angular-cart
ng new angular-cart

Running the ng new command will prompt some questions for the project scaffolding. Type y to add Angular routing to that project and select css as the default stylesheet.

Selecting this two things will create a new Angular 10 project. You can move into the project directory and then use the code . command to open up our project in VS Code.

To serve our application we can run ng serve which will open up our application on port 4200.

We will continue by setting up our user interface for the application. You can get all our UI components from WrapPixel’s UI Kit.

WrapPixel for Best Angular Resources

WrapPixel is an online template store where you could get great Angular Dashboard Template and Angular Material Themes.

We will create our components for listing of products and cart details. We will also define a navbar component for page navigation.

To create a component run this on your terminal:

ng g c components/cart
ng g c components/navbar
ng g c components/products

This will create a components directory and create a cart modules where we will define our markup and styles.

We need to configure Bootstrap into our application by adding the CDN into the src/dex.html file.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>AngularCart</title>
  <base href="/">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
    integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
  <link rel="icon" type="image/x-icon" href="favicon.ico">
</head>
<body>
  <app-root></app-root>
</body>
</html>

#javascript #nodejs #beginner #web-development #angular

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Buddha Community

Build a Shopping Cart in Angular10
wp codevo

wp codevo

1608042336

JavaScript Shopping Cart - Javascript Project for Beginners

https://youtu.be/5B5Hn9VvrVs

#shopping cart javascript #hopping cart with javascript #javascript shopping cart tutorial for beginners #javascript cart project #javascript tutorial #shopping cart

Ramya M

Ramya M

1608966619

10 Best Shopping Cart Software for your Online Store In 2022

The ecommerce market has faced tremendous growth in recent decades. People are well used to online shopping and they started showing less interest in traditional shopping. Aspiring entrepreneurs are already in search of entering the online market by all means.

Any online business relies on an effective shopping cart website. So every software development company is an urge to develop a perfect shopping cart software that will let the user gain genuine customers and to earn better returns.

What is Shopping Cart Software

Shopping cart software facilitates the customers to purchase the products or services on any ecommerce website. The shopping cart software plays a vital role in online shopping and the customer gets a unified shopping experience when the ecommerce website has excellent shopping cart software integrated with it.

This is one of the main aspects that every entrepreneur needs to concentrate on to acquire more new customers.

Here is the List of Top 5 Online shopping Cart Software For Your Business

1. Zielcommerce – The Most Trusted Online Shopping Cart Software

This is image title
 

Zielcommerce is a complete digital market-based ecommerce software that can ensure the users have an effective online shopping cart platform and allow the customers to have a secured shopping. You can have a B2B or B2C, this software supports all types of business models and is most trusted by startups. Zielcommerce combines your point-of-sales and the back-end system and lets the customers have a smooth transaction.

Zielcommerce gives you the overall control of the online shopping cart software and you can customize it as per your business requirement. You can upgrade your business as the software is scalable and it can support your business growth. The vendor and buyer-centric software can satisfy all types of users and can assure you good sales and greater returns.

The Reliable Features of this Online Shopping Cart Software

  • Pay once and own the software.
  • Attract your global audience with the multilingual and multi-currency feature.
  • You can enjoy the single-click checkout process.
  • The review and rating feature allows the customers to share their opinion and feedback about their experience with the shopping cart software.
  • Get analytical reporting with this shopping cart ecommerce platform and understand your business performance.

2. Cube Cart – An Ultimate Online Shopping Cart Software

This is image title
Cube cart provides an extraordinary shopping experience to the users and can get them greater reach and visibility among their target audience. This shopping cart software grabs the global users as they are SEO friendly and are easily ranked in all search engines on top pages.

The buyer will be delighted with extensive features of this online shopping cart software. Cuba cart is highly secured with proper SSL integration that will allow the user to have a secured transaction. It also has a versatile payment options that facilitates the buyer to choose his convenient payment method to pay and purchase the product.

The salient features of this shopping cart ecommerce solution

  • The software is mobile compatible and fits well with all mobile OS.
  • The shopping cart website is highly secured with SSL certificate configuration.
  • Simple product categorization.
  • User-friendly interface to reduce abandonment rate.
  • Easily customizable and also scalable.

3. Cscart– A Comprehensive Shopping Cart Software 

This is image title
Cscart can build customer trust and increase their credibility with its trustworthy shopping cart software. You can have all the essential features that are necessary to attract customers. The feature-rich UI and UX will never fail to delight the visitors. The software will assure your growth and expansion with its customizable and scalable option.

Pcmag has an integrated module for shipping and logistics. So this shopping cart ecommerce solution will ensure that the customers will get their product on right time without any delay. The store interface of this shopping cart software is quite simple as the merchants can easily upload their product images and description without much complications.

The highlights of this shopping cart software

  • Provide customers with flexible delivery options and make them more comfortable in purchasing products with your shopping cart software
  • The responsive design will attract all smart device users and gets you more sales and revenue.
  • Multiple payment gateways will make customers decide on buying products on your platform.
  • The software comes with a dedicated mobile application that will gain the attention of all mobile users.

4. Shopaccino – A Remarkable shopping cart ecommerce solution

Shopaccino promises the user to have an easy to add shopping cart ecommerce solution. Focusing the global market this shopping cart software supports over 50 languages. You can enjoy the complete flexibility of having payment options with 40 payment gateways in this shopping cart software.

To gain more traffic to this shopping cart software, shopaccino is integrated with social media login and buyers can easily share your recent purchases in your social media. page. This will give a good reach for your brand and your shopping cart software will gain more credibility among online users.

The key features of this shopping cart ecommerce solution

  • In-built marketing tools will help you to gain more organic traffic to your shopping cart software.
  • A complete guidance on managing this shopping cart software is given by the shopaccino team. You can also get online support and get connected with the team 24/7.
  • A free trial version for 14 days is available on this shopping cart software and startups can utilize this and understand the product.
  • A wide range of add-ons are available with this shopping cart software.

5. X-cart – A Renowned Shopping Cart Software

This is image title
X-cart renders everything that you need to leverage your business. You can mark your digital presence through this shopping cart ecommerce solution. More ROI is guaranteed with your high-performing online store. The custom website design will positively increase your sales and revenue. With in-built digital marketing tools, you can expect greater reach in all online platforms.

The flexible, scalable and affordable shopping cart software can help you to acquire more customers to your online store. With the integrated analytics tool, you can convert your insight into action and can positively increase the customer engagement. This shopping cart software holds the native multi vendor features and focuses more on vendor management.

The benefits of this shopping cart software

  • x-cart provides strong customer authentication with latest security regulations.
  • This shopping cart software has powerful anti-fraud tools that will protect your business from online scams.
  • Each client will get an individual VPS server and this will give you a high level of privacy for your data.
  • The database back-up and restore feature will allow you to run your online store without any stress.

6. Neto - A Robust Shopping Cart eCommerce software

Neto is a shopping cart software. It provides a comprehensive solution for inventory management. We help our customers increase their revenue and improve operational efficiency. Offering a unique customer experience that cultivates loyal customers on all channels. An eCommerce platform to handle all aspects of your business, and online store

Features of online shopping cart solution.

  • The embedded marketing tools will help you gain more organic traffic
  • It provides comprehensive advice on the management of this cart software. You can also get online assistance and continuous support.
  • A free 2 weeks trial is available on this shopping cart software and startups can use it and understand the product.
  • Multiples add-ons are available with this shopping cart software.

7. Miva- A Flexible Shopping Cart Platform

Miva is a shopping cart software with a flexible and adaptable ecommerce platform that can be easily changed as their business evolves. They need a platform to help them generate revenue by increasing the average order value and reducing operating expenses. Total flexibility to have payment options with multiple payment gateways in this shopping cart software.

Highlights of this shopping cart software

  • Miva provides Customizing controls seamlessly
  • It offers more secure online shopping and payment and transactions are easy and well managed.
  • Our shopping cart software is able to receive payments in a hassle-free way.
  • Ensures that all transactions proceed smoothly, shopping carts organize and file information into historical sections,and even process the data to present it visually and enable the owner to understand the health of its performance.

8. AbanteCart - A Complete Shopping Cart Software Solution

Abantecart is an easy and user-friendly online shopping cart software and generally highly customizable. AbanteCart is not the exception. A unique characteristic, however, is that it requires minimal maintenance. This makes it a practical way for small companies to take advantage of the benefits of free software.

key features of this shopping cart solution

  • The adaptive design will attract all intelligent device users and allow you to increase your sales and revenue.
  • Multiple payment gateways will allow customers to make the decision to purchase products on your platform.
  • It a dedicated mobile app software provide push notification that will attract the attention of all mobile users.
  • This shopping cart software supports more than one language will be easy for international buyers to buy from you,And one step in the right direction if you’re trying to globalize your business.

9. Volusion - A Most Reliable Shopping cart software

Volusion shopping cart software is fully built with all the difficult features that make this software to stand out in the market while allowing you to increase your overall revenue. Easily manage your online store with shopping cart software that’s full of easy-to-use tools. Turn-key, integrated, customizable eCommerce management solution.

Highlights of this online shopping cart software

  • More than 50 payment gateways have been handled with this online shopping cart ecommerce platform.
  • This shopping cart program is protected by an SSL certificate.
  • Automatic tax calculation will allow vendors to process orders with ease.
  • Top-notch data security.

10. UltraCart - A Comprehensive Shopping cart software

Shopping Cart software streamlines the transformation of your online store With just a few clicks, you can sync your UltraCart products and add ecommerce components to any page or post, a shopping cart platform that allows a secure payment anywhere on your site, and on any device

Ultracart has literally multiple ways to personalize and adapt to meet your needs.

  • Making the entire process efficient, easy and fun to look at will please your customers and make them want to return to your store.
  • Easy customization and also scalable & Simple categorizing of products.
  • User-friendly interface to minimize drop-out rate

How Does Shopping Cart Software Work ?

Before you enter into an online business and start developing an ecommerce website you need to understand the role of shopping cart software and how it works. Let us analyze the complete process in detail.

Adding products to the cart - This is the initial stage that is carried out through the shopping cart software. Customers will search for the product and when they finalize the one they need to purchase they will first add that product to the cart. For future review, customers can go through the products that are added to the shopping cart.

Processing on purchase- The shopping cart ecommerce will make the customers decide on buying the products that are added to the shopping cart. The shopping cart software should provide additional facilities like adding new products or removing existing products or to edit the product by changing its color or size or quantity.

Checkout process - This is the final stage where the customer will add information that is related to payment and will purchase the product. The shopping cart software should provide all familiar payment options to the customers that will make them easily transfer the money and buy the product.

Benefits of Online Shopping Cart for Store Owner?

We can be benefited from effective shopping cart software in numerous ways. The key objective for the shopping cart software is to build a better customer relationship with the shopping cart ecommerce site and to get better returns. Let us get into detail about the benefits of the shopping cart software.

Secured shopping – every shopping cart mainly deals with site security and they are integrated with SSL certification. So the customers may not worry about their personal information and can have a secured transaction.

Simplified datamanagement– business intelligence is accomplished through shopping cart software. It not only allows the customer to pass through the ecommerce site but also holds their data and helps to understand their behavior well.

Easy technology adoption – there is a vast evolution in the features of ecommerce websites. It keeps changing as per the technology advancement. The shopping cart software easily adapts to technology and can be more flexible.

Hassle-free payment processing – the shopping cart software will provide customers a hassle-free experience while transferring the payment through their credit or debit cards or any other payment methods. The shopping cart software will direct you to the concerned banking web page and will take responsibility for a smooth transaction.

Enhances website performance – the online shopping cart software will organize and categorize the search history and will display the required products with easy searching algorithms. This will undoubtedly enhance the performance of the shopping cart ecommerce website.

Features of Shopping Cart Software

The features will decide the significance of the shopping cart software. These features will make the customers stay in your shopping cart ecommerce website and will help you with effective sales conversion.

Dedicated administration panel – the shopping cart software will help you to store and manage your products with an exclusive administration panel. The platform provides the users the easy navigation and displays the products in a certain order.

Products categorization – the customers want their products to be displayed with a simple search and shopping cart software will allow you to identify the product easily with less time as the products are well categorized.

Customers’ review – every product or service page will have a review section where the customers are allowed to register their feedback. This will delight them as they feel their opinion is highly respected by the shopping cart ecommerce website.

Easy checkout – the shopping cart software will let the customers buy the product they want with less complication in easy checkout processing option. This will also reduce the abandonment rate of the shopping cart ecommerce website.

Third-party API integration – every business will follow its third-party software for its business administration. The shopping cart software will support you to integrate your third-party software and manage it all under a single roof.

Online chat support – shopping cart software will support the customers by providing them the online chat support that will be 24/7 available. All queries and complaints can register any day, anytime.

How Much Does the Shopping Cart Software Cost?

If you want to know the cost for purchasing online shopping cart software then you need to analyze several factors like the number of customers you expect to use the shopping cart software and also the number of sellers who will be registering with the platform.

Then comes the feature you will need in your shopping cart software. You can set the features according to your business types like small, medium, or corporate. These factors will fix the price of the shopping cart software.

Conclusion

Give a perfect shopping experience for your customers by building a reliable shopping cart software. The impression you make will stand forever in the minds of your customers. This is why you need to pay more attention to developing a shopping cart ecommerce website.

Keep in mind that customers will keep comparing your shopping cart software with your competitors so you need to always monitor what strategy your competitors are playing and should find a counter solution and should implement it and try to get good conversions.

#ecommerce platform #best ecommerce platform #shopping cart software #shopping cart platform #shopping cart website #ecommerce software solution

The Best Way to Build a Chatbot in 2021

A useful tool several businesses implement for answering questions that potential customers may have is a chatbot. Many programming languages give web designers several ways on how to make a chatbot for their websites. They are capable of answering basic questions for visitors and offer innovation for businesses.

With the help of programming languages, it is possible to create a chatbot from the ground up to satisfy someone’s needs.

Plan Out the Chatbot’s Purpose

Before building a chatbot, it is ideal for web designers to determine how it will function on a website. Several chatbot duties center around fulfilling customers’ needs and questions or compiling and optimizing data via transactions.

Some benefits of implementing chatbots include:

  • Generating leads for marketing products and services
  • Improve work capacity when employees cannot answer questions or during non-business hours
  • Reducing errors while providing accurate information to customers or visitors
  • Meeting customer demands through instant communication
  • Alerting customers about their online transactions

Some programmers may choose to design a chatbox to function through predefined answers based on the questions customers may input or function by adapting and learning via human input.

#chatbots #latest news #the best way to build a chatbot in 2021 #build #build a chatbot #best way to build a chatbot

Riyad Amin

Riyad Amin

1571046022

Build Your Own Cryptocurrency Blockchain in Python

Cryptocurrency is a decentralized digital currency that uses encryption techniques to regulate the generation of currency units and to verify the transfer of funds. Anonymity, decentralization, and security are among its main features. Cryptocurrency is not regulated or tracked by any centralized authority, government, or bank.

Blockchain, a decentralized peer-to-peer (P2P) network, which is comprised of data blocks, is an integral part of cryptocurrency. These blocks chronologically store information about transactions and adhere to a protocol for inter-node communication and validating new blocks. The data recorded in blocks cannot be altered without the alteration of all subsequent blocks.

In this article, we are going to explain how you can create a simple blockchain using the Python programming language.

Here is the basic blueprint of the Python class we’ll use for creating the blockchain:

class Block(object):
    def __init__():
        pass
    #initial structure of the block class 
    def compute_hash():
        pass
    #producing the cryptographic hash of each block 
  class BlockChain(object):
    def __init__(self):
    #building the chain
    def build_genesis(self):
        pass
    #creating the initial block
    def build_block(self, proof_number, previous_hash):
        pass
    #builds new block and adds to the chain
   @staticmethod
    def confirm_validity(block, previous_block):
        pass
    #checks whether the blockchain is valid
    def get_data(self, sender, receiver, amount):
        pass
    # declares data of transactions
    @staticmethod
    def proof_of_work(last_proof):
        pass
    #adds to the security of the blockchain
    @property
    def latest_block(self):
        pass
    #returns the last block in the chain

Now, let’s explain how the blockchain class works.

Initial Structure of the Block Class

Here is the code for our initial block class:

import hashlib
import time
class Block(object):
    def __init__(self, index, proof_number, previous_hash, data, timestamp=None):
        self.index = index
        self.proof_number = proof_number
        self.previous_hash = previous_hash
        self.data = data
        self.timestamp = timestamp or time.time()
    @property
    def compute_hash(self):
        string_block = "{}{}{}{}{}".format(self.index, self.proof_number, self.previous_hash, self.data, self.timestamp)
        return hashlib.sha256(string_block.encode()).hexdigest()

As you can see above, the class constructor or initiation method ( init()) above takes the following parameters:

self — just like any other Python class, this parameter is used to refer to the class itself. Any variable associated with the class can be accessed using it.

index — it’s used to track the position of a block within the blockchain.

previous_hash — it used to reference the hash of the previous block within the blockchain.

data—it gives details of the transactions done, for example, the amount bought.

timestamp—it inserts a timestamp for all the transactions performed.

The second method in the class, compute_hash , is used to produce the cryptographic hash of each block based on the above values.

As you can see, we imported the SHA-256 algorithm into the cryptocurrency blockchain project to help in getting the hashes of the blocks.

Once the values have been placed inside the hashing module, the algorithm will return a 256-bit string denoting the contents of the block.

So, this is what gives the blockchain immutability. Since each block will be represented by a hash, which will be computed from the hash of the previous block, corrupting any block in the chain will make the other blocks have invalid hashes, resulting in breakage of the whole blockchain network.

Building the Chain

The whole concept of a blockchain is based on the fact that the blocks are “chained” to each other. Now, we’ll create a blockchain class that will play the critical role of managing the entire chain.

It will keep the transactions data and include other helper methods for completing various roles, such as adding new blocks.

Let’s talk about the helper methods.

Adding the Constructor Method

Here is the code:

class BlockChain(object):
    def __init__(self):
        self.chain = []
        self.current_data = []
        self.nodes = set()
        self.build_genesis()

The init() constructor method is what instantiates the blockchain.

Here are the roles of its attributes:

self.chain — this variable stores all the blocks.

self.current_data — this variable stores information about the transactions in the block.

self.build_genesis() — this method is used to create the initial block in the chain.

Building the Genesis Block

The build_genesis() method is used for creating the initial block in the chain, that is, a block without any predecessors. The genesis block is what represents the beginning of the blockchain.

To create it, we’ll call the build_block() method and give it some default values. The parameters proof_number and previous_hash are both given a value of zero, though you can give them any value you desire.

Here is the code:

def build_genesis(self):
        self.build_block(proof_number=0, previous_hash=0)
 def build_block(self, proof_number, previous_hash):
        block = Block(
            index=len(self.chain),
            proof_number=proof_number,
            previous_hash=previous_hash,
            data=self.current_data
        )
        self.current_data = []  
        self.chain.append(block)
        return block

Confirming Validity of the Blockchain

The confirm_validity method is critical in examining the integrity of the blockchain and making sure inconsistencies are lacking.

As explained earlier, hashes are pivotal for realizing the security of the cryptocurrency blockchain, because any slight alteration in an object will result in the creation of an entirely different hash.

Thus, the confirm_validity method utilizes a series of if statements to assess whether the hash of each block has been compromised.

Furthermore, it also compares the hash values of every two successive blocks to identify any anomalies. If the chain is working properly, it returns true; otherwise, it returns false.

Here is the code:

def confirm_validity(block, previous_block):
        if previous_block.index + 1 != block.index:
            return False
        elif previous_block.compute_hash != block.previous_hash:
            return False
        elif block.timestamp <= previous_block.timestamp:
            return False
        return True

Declaring Data of Transactions

The get_data method is important in declaring the data of transactions on a block. This method takes three parameters (sender’s information, receiver’s information, and amount) and adds the transaction data to the self.current_data list.

Here is the code:

def get_data(self, sender, receiver, amount):
        self.current_data.append({
            'sender': sender,
            'receiver': receiver,
            'amount': amount
        })
        return True

Effecting the Proof of Work

In blockchain technology, Proof of Work (PoW) refers to the complexity involved in mining or generating new blocks on the blockchain.

For example, the PoW can be implemented by identifying a number that solves a problem whenever a user completes some computing work. Anyone on the blockchain network should find the number complex to identify but easy to verify — this is the main concept of PoW.

This way, it discourages spamming and compromising the integrity of the network.

In this article, we’ll illustrate how to include a Proof of Work algorithm in a blockchain cryptocurrency project.

Finalizing With the Last Block

Finally, the latest_block() helper method is used for retrieving the last block on the network, which is actually the current block.

Here is the code:

def latest_block(self):
        return self.chain[-1]

Implementing Blockchain Mining

Now, this is the most exciting section!

Initially, the transactions are kept in a list of unverified transactions. Mining refers to the process of placing the unverified transactions in a block and solving the PoW problem. It can be referred to as the computing work involved in verifying the transactions.

If everything has been figured out correctly, a block is created or mined and joined together with the others in the blockchain. If users have successfully mined a block, they are often rewarded for using their computing resources to solve the PoW problem.

Here is the mining method in this simple cryptocurrency blockchain project:

def block_mining(self, details_miner):
            self.get_data(
            sender="0", #it implies that this node has created a new block
            receiver=details_miner,
            quantity=1, #creating a new block (or identifying the proof number) is awarded with 1
        )
        last_block = self.latest_block
        last_proof_number = last_block.proof_number
        proof_number = self.proof_of_work(last_proof_number)
        last_hash = last_block.compute_hash
        block = self.build_block(proof_number, last_hash)
        return vars(block)

Summary

Here is the whole code for our crypto blockchain class in Python:

import hashlib
import time
class Block(object):
    def __init__(self, index, proof_number, previous_hash, data, timestamp=None):
        self.index = index
        self.proof_number = proof_number
        self.previous_hash = previous_hash
        self.data = data
        self.timestamp = timestamp or time.time()
    @property
    def compute_hash(self):
        string_block = "{}{}{}{}{}".format(self.index, self.proof_number, self.previous_hash, self.data, self.timestamp)
        return hashlib.sha256(string_block.encode()).hexdigest()
    def __repr__(self):
        return "{} - {} - {} - {} - {}".format(self.index, self.proof_number, self.previous_hash, self.data, self.timestamp)
class BlockChain(object):
    def __init__(self):
        self.chain = []
        self.current_data = []
        self.nodes = set()
        self.build_genesis()
    def build_genesis(self):
        self.build_block(proof_number=0, previous_hash=0)
    def build_block(self, proof_number, previous_hash):
        block = Block(
            index=len(self.chain),
            proof_number=proof_number,
            previous_hash=previous_hash,
            data=self.current_data
        )
        self.current_data = []  
        self.chain.append(block)
        return block
    @staticmethod
    def confirm_validity(block, previous_block):
        if previous_block.index + 1 != block.index:
            return False
        elif previous_block.compute_hash != block.previous_hash:
            return False
        elif block.timestamp <= previous_block.timestamp:
            return False
        return True
    def get_data(self, sender, receiver, amount):
        self.current_data.append({
            'sender': sender,
            'receiver': receiver,
            'amount': amount
        })
        return True        
    @staticmethod
    def proof_of_work(last_proof):
        pass
    @property
    def latest_block(self):
        return self.chain[-1]
    def chain_validity(self):
        pass        
    def block_mining(self, details_miner):       
        self.get_data(
            sender="0", #it implies that this node has created a new block
            receiver=details_miner,
            quantity=1, #creating a new block (or identifying the proof number) is awared with 1
        )
        last_block = self.latest_block
        last_proof_number = last_block.proof_number
        proof_number = self.proof_of_work(last_proof_number)
        last_hash = last_block.compute_hash
        block = self.build_block(proof_number, last_hash)
        return vars(block)  
    def create_node(self, address):
        self.nodes.add(address)
        return True
    @staticmethod
    def get_block_object(block_data):        
        return Block(
            block_data['index'],
            block_data['proof_number'],
            block_data['previous_hash'],
            block_data['data'],
            timestamp=block_data['timestamp']
        )
blockchain = BlockChain()
print("GET READY MINING ABOUT TO START")
print(blockchain.chain)
last_block = blockchain.latest_block
last_proof_number = last_block.proof_number
proof_number = blockchain.proof_of_work(last_proof_number)
blockchain.get_data(
    sender="0", #this means that this node has constructed another block
    receiver="LiveEdu.tv", 
    amount=1, #building a new block (or figuring out the proof number) is awarded with 1
)
last_hash = last_block.compute_hash
block = blockchain.build_block(proof_number, last_hash)
print("WOW, MINING HAS BEEN SUCCESSFUL!")
print(blockchain.chain)

Now, let’s try to run our code to see if we can generate some digital coins…

Wow, it worked!

Conclusion

That is it!

We hope that this article has assisted you to understand the underlying technology that powers cryptocurrencies such as Bitcoin and Ethereum.

We just illustrated the basic ideas for making your feet wet in the innovative blockchain technology. The project above can still be enhanced by incorporating other features to make it more useful and robust.

Learn More

Thanks for reading !

Do you have any comments or questions? Please share them below.

#python #cryptocurrency

What is BUILD Finance (BUILD) | What is BUILD Finance token | What is BUILD token

BUILD Finance DAO

The document is non-binding. Some information may be outdated as we keep evolving.

BUILD Philosophy

BUILD Finance is a decentralised autonomous venture builder, owned and controlled by the community. BUILD Finance produces, funds, and manages community-owned DeFi products.

There are five core activities in which the venture BUILDers engage:

  1. Identifying business ideas,
  2. Organising teams,
  3. Sourcing capital,
  4. Helping govern the product entities, and
  5. Providing shared services.

BUILD operates a shared capabilities model, where the DAO provides the backbone support and ensures inter-entity synergies so that the product companies can focus on their own outcomes.

BUILD takes care of all organisational, hiring, back/mid office functions, and the product companies focus on what they can do best, until such time where any individual product outgrows the DAO and becomes fully self-sustainable. At that point, the chick is strong enough to leave the nest and live its own life. The survival of the fittest. No product entity is held within DAO by force.

Along the way, BUILD utilises the investment banking model, which, in its essence, is a process of creating assets, gearing them up, and then flipping them into a fund or setting them as income-generating business systems, all this while taking fees along the way at each step. BUILD heavily focuses on integrating each asset/product with each other to boost productive yield and revenues. For example, BUILD’s OTC Market may be integrated with Metric Exchange to connect the liquidity pools with the trading traffic. The net result – pure synergy that benefits each party involved, acting in a self-reinforcing manner.

El Espíritu de la Colmena (The Spirit of the Beehive)

BUILD is a hive and is always alive. While some members may appear more active than others, there’s no central source of control or “core teams” as such. BUILD is work in progress where everyone is encouraged to contribute.

Following the natural free market forces, BUILD only works on those products that members are wanting to work on themselves and that they believe have economic value. Effectively, every builder is also a user of BUILD’s products. We are DeFi users that fill the gaps in the ecosystem. Any member can contribute from both purely altruistic or ultra-mercantile intentions – it’s up to the wider community to decide what is deemed valuable and what product to support. The BUILD community is a sovereign individual that votes with their money and feet.

BUILD members = BUILD users. It’s that simple.

$BUILD TOKEN

Tokenomics

$BUILD token is used as a governance token for the DAO. It also represents a pro-rata claim of ownership on all DAO’s assets and liabilities (e.g. BUILD Treasury and $bCRED debt token).

The token was distributed via liquidity mining with no pre-sale and zero founder/private allocation. The farming event lasted for 7 days around mid-Sep 2020. At the time, BUILD didn’t have any products and held no value. Arguably, $BUILD has still zero value as it is not a legal instrument and does not guarantee or promise any returns to anyone. See the launch announcement here https://medium.com/@BUILD_Finance/announcing-build-finance-dc08df585e57​

Initial supply was 100,000 $BUILD with 100% distributed via fair launch. Subsequently, the DAO unanimously voted to approve minting of extra 30,000 $BUILD and allocate them as:

  • 15,000 $BUILD (11.5%) to the founding member of the DAO (@0xdev0) with 1-year gradual vesting, and
  • 15,000 $BUILD (11.5%) to the DAO treasury as development funds.

For the proposal of the above see: https://forum.letsbuild.finance/t/proposal-2-fund-the-development-of-defi-lending-platform/24​

The voting took place at a later retired web-page https://vote.letsbuild.finance. The governance has since moved to Snapshot (link below). The results of the old proposals are not visible there, however, on-chain voting contract can be see here: https://etherscan.io/address/0xa8621477645f76b06a41c9393ddaf79ddee63daf#readContract​

$Build Token Repartition

Vesting Schedule

Minting keys are not burnt = $BUILD supply is not fixed as token holders can vote on minting new tokens for specific reasons determined by the token holders. For example, the DAO may mint additional tokens to incentivise usage of its products, which would, in turn, increase the value flow or TVL. Dilution is not in the economic benefit of the token holders, hence any such events has to be considered carefully.

Access to minting function is available via on-chain governance. A safe buffer is established in a form of the contract-enforced 24 hour delay, which should provide a sufficient time for the community to flag. Meaning that before such a transaction could be executed, everyone would be able to act in advance by withdrawing their funds / exiting from BUILD. Any malicious minting would, theoretically, result in an immediate market sell-off of $BUILD, making it economically detrimental to do such an action. This makes it highly improbable that any malicious minting would be performed_._

GOVERNANCE

All components of the BUILD DAO and the control over its have been decentralised:

  • All contracts (incl. the Treasury and Basis Gold) can be operated by $BUILD holders with on-chain proposals (see https://docs.build.finance/build-knowledge-base/on-chain-voting);
  • All social accounts (Discord, Telegram, and Twitter) are managed by multiple moderators;
  • All frontends (Metric Exchange, Basis Gold, and the BUILD homepage) are auto-deployed and managed by multiple devs.

TREASURY & DEVELOPMENT

BUILD DAO Treasury

The BUILD treasury has over $400k that can be managed by on-chain proposals and used in whichever way the community desires. For example, to hire developers. Having a functioning product, enough funds in the treasury and a fully decentralised governance has been a long-term goal since the inception in September 2020, and now it’s finally here.

Current holdings are (might be outdated):

  • Capital budget (dev / incentives fund) - 11,025 $BUILD (~$94k);
  • Operational budget (product development) - 204,300 $aDAI;
  • Ownership stake - 200,000 $METRIC (~$84k);
  • Ownership stake - 199,900 $UPDOWN(~$62k);
  • Ownership stake - 5,400 $HYPE (~$1.3k);
  • Ownership stake - 2% of $BSGS supply.
  • TOTAL: ~$445k

Funding of the Development

In an early stage, the development will be funded by an allocation of bCRED debt tokens for development expenses. After the first product was built (i.e. Metric Exchange), the DAO sold 5,000 $BUILD for 203,849 $DAI which will now be used for funding of other products or a combination of revenue + a smaller token allocation. This is up to the community to decide.

Smart Contract Audit

Contracts are not audited. It’s up to the BUILD community governance to decide how to spend our funds. If the community wants to spend any amount for auditing, a voting proposal can be initiated. As with any decisions and proposals, the cost-benefit analysis must be employed in regards to the economical sense of spending any funds on audit vs developing more products and expanding our revenue streams.

DAO Liabilities and $bCRED

$bCRED is a token that allowed the DAO to reward members for work before the DAO source sufficient funds. Effectively, $bCRED is a promissory note or an IOU to give back $DAI at 1:1 ratio, when the DAO starts generating revenues. Read more about $bCRED here: https://medium.com/@BUILD_Finance/what-is-bcred-b97e4cc75f8c.

“BUILDER” User Role in Discord

Since Discord is our primary coordination mechanism, we need to make effort to keep it focused on producing value. During the launch of METRIC, we’ve doubled our total number of users! This made it very difficult for existing users to explain what BUILD is about to new users and created a lot of confusion.

To help improve the quality of conversations, we’ve introduced a new user role called BUILDer. BUILDers will have write-access to product development channels while everyone else will only be able to read them. This should keep those product changes focused on actual productive conversations and make them more informative.

“GUARDIAN” Role in Discord

To increase our collective output as a community, a governance vote introduced an incentivisation mechanism for community contribution, tipping, and other small projects using our unique bCRED token (but may change in the future as required). These tokens are stewarded by active community members — “guardians’’ — who are free to allocate these funds to tip people for proactive work. Current guardians are @Son of Ishtar and @0xdev0, although anyone can propose the tip for anyone else. For more details see Proposal #15.

Hence, Guardians are defined as members of the DAO who are entrusted with a community budget for tipping other members for performing various small tasks.

PRODUCT SUITE & ROADMAP

  • Metric Exchange - is a DEX aggregator that allows for limit orders trading for any ERC-20 token via 0x relayer. Development continues with the product owner SHA_2048 and inputs from vfat. Live at metric.exchange.
  • Basis Gold - a synthetic, algorythmically-adjusted token pegged to the price of gold (sXAU) with elastic supply. Live at https://basis.gold/.
  • Updown Finance - binary options for volatility trading instrument (alpha is live at updown.finance).
  • Vortex - a lending & borrowing platform, which will target the long tail of assets that are currently not served by the existing DeFi money markets. Aiming to launch by March’2021.

The other immediate focus right now will be to make good use of our newly available funding and hire several product managers for other projects.

Please note that nothing is here set in stone. Just like any other start-up, we’ll keep experimenting, learning, and evolving. What’s listed here is just our current trajectory but it might change at any point.

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