Blockchain and decentralized applications

Blockchain and decentralized applications
With blockchain innovation came the advancement of dApps , applications that never again rely upon focal programming for their activity, however are dispersed across large number of gadgets that speak with
each other over Internet channels. Bitcoin and other cryptocurrency systems are examples of decentralized applications , decentralized app developer which do not need intermediaries to host or manage the code or user data.

The development of decentralized applications is not subject to the authorization of any central entity, which, by design, does not exist as such. The most commonly used platform to run dApps is Ethereum , where more than a thousand applications of this type have been built.

Traditional App Development vs. dApp Development
Perhaps the primary difference between decentralized and traditional applications in terms of their development is the level of detail with which the dApp code is analyzed before being released . In this sense, an analogy can be made with the development of hardware, which is also as rigorous as the budgets and the firm behind them allows it, in the first case, and demands it, in the second.

As with hardware, dApp testing prior to launch is usually quite strict, as the costs of releasing a poor product to the public are often quite high, also affecting the reputation of the manufacturer . The smart contracts coded in the development of a dApp cannot be modified once released on the mainnet, and errors in their programming cast doubt on the professional skill of their developers and put users’ money at risk.

In the development of traditional applications, what is sought is to launch a minimum viable product (MVP) on the market, which is why it is customary to use rapid iteration cycles. The software is considered ready for the public to use and then the necessary patches or updated versions of the software are released as soon as possible.

When it comes to security, formal code verification is much more prevalent in decentralized app development . This process consists of checking if an algorithm meets certain logical requirements. Verification tools like Coq and Isabelle are often used to prove that a program is free of errors.

dApp development tools
Among the many existing tools, the most used by decentralized application developers are:

Parity is an Ethereum client written in a recent low-level language called Rust. Modularly structured , Parity offers an advanced command line, multiple consensus mechanisms, and minimal storage and memory footprint. Thanks to the number of projects that use this tool, decentralized finance development services during the attack that the Parity wallet suffered on July 19, 2017, a group of white hat hackers intervened in the wallets that had not yet been emptied, being able to save some 514,000 ETH , which for back then they were worth more than $100 million.

The Truffle framework is used by companies such as ShapeShift, Digix Global, and STABL. It comprises tools to create, compile, test, and deploy dApps in an agile manner .

In addition to those mentioned, we have Listener, which runs static analysis on smart contracts, Remix, a Solidity editor and compiler for browsers, and EthPM, a package manager for Ethereum.

The best practices for the development of dApps (Consensys) are available on Github, and there are third parties that perform audit work on smart contracts implemented on the Ethereum tesnet, such as Zeppelin. For those who want to test their smart contract security skills, Zeppelin has a game called “The Ethernaut” where, in order to advance, participants must be able to hack the contract for each level .

Smart contracts are only one part of dApps
The source code of decentralized applications actually contains a small portion of smart contracts, constituting a minor percentage of the total code.

In the case of Storj , the decentralized cloud storage, smart contracts, whose function is to support the logic of transactions, occupy only 9% of the code . The programming that is in charge of the encryption and protection of shared files, the use of the hard disk or the way in which the nodes are updated, is in a separate module, written in NodeJS. Golem smart contracts occupy a smaller percentage, 3%. The main code, in charge of carrying out the rest of the functions, is written in Python.

Smart contracts are on-chain, which means that the code directly interacts with the blockchain. By contrast, defi development off-chain code does not directly relate to it.

New development platforms
To code decentralized applications on Ethereum it is necessary to master a custom programming language. However, there are next-generation development platforms that support the use of traditional languages ​​​​(JavaScript and Python, for example), such as Tendermint and Cosmos .

Tendermint is made up of two elements: the blockchain consensus engine ( Tendermint Core ) and the generic application interface. Tendermint Core ensures that all transactions are logged in at the same time, in the same sequence, on all machines , thus achieving Byzantine fault tolerance. ABCI (Application Blockchain Code Interface) is the name of the interface, it runs on top of Tendermint Core and supports many programming languages ​​​​to process transactions.

The Cosmos platform is based on Tendermint , which allows you to use any programming language to build interoperable decentralized applications belonging to different chains. If you want to develop a more independent and flexible dApp, you can develop it on your own blockchain, and avoid the complications of other networks, such as their consensus mechanisms.

For less ambitious applications that do not require their own blockchain, you can go to Ethermint , an environment with better performance than Ethereum and all of its capabilities available.

On the new Blockstack dApp development platform, users are the owners of their personal data. In this case, applications run off-chain , using the JSON REST API to communicate with the underlying Blockstack core.

Applications can be written in a variety of languages. Additionally, Blockstack offers a tutorial showing how dApps can be built on their platform.

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5 Blockchain Applications That Have Transformed the World of Technology

The blockchain is the decentralized database of the blocks of information, which gets recorded in the chain format and linked in a secured crypto graphical manner. This technology ensures proper safety of the data due to its secure nature, and it totally changes how people carry out transactions. It also brings about a faster and secure process of validating information needed to establish reliability.

Though blockchain technology came into the market to carry out only digital transactions, it is now used in various industries like supply chain, finance, health care, and many more.

The blockchain technology has made its position in mobile app development as well. Blockchain applications are transparent and accountable. From getting easy access to medical records and buying insurance, you can see blockchain applications everywhere.

Here are some of the areas where you can see the use of blockchain applications and how they have changed various industries.

1. Ripple

Ripple is useful for increasing banking transactions. The implementation of blockchain technology in the financial sector is much more profound than any other sector. Ripple proves this. It is one of the greatest tools to record and complete financial transactions.

It develops a large network despite strict physical boundaries. As there is no such third-party involvement present, the cost of these transactions is lower than usual. At the same time, the network also remains transparent and quite secured.

It is normally seen that financial transactions that happen globally are

error-prone and take a lot of time. In addition to this, when the transaction

fees and exchange rates get added up, the total cost usually gets high.

However, Ripple offers real-time international transactions without spending too much money. It has the network of about 200+ institutions making the process affordable, secure, and fast for all sorts of international transactions.

2. Etherisc

This blockchain application helps in automating flight insurance. Insurance is another area where blockchain is gaining popularity. Through this application, insurers can make smart contracts rather than getting involved in the traditional contracts that are usually complex. Etherisc is the blockchain application that helps customers buy flight insurance. If the flight gets canceled or delayed, they do not have to wait for months to get the payment back. This application ensures an on-time payout.

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Devin Pinto


Blockchain Certification | Blockchain Training Course | Blockchain Council

In all the market sectors, Blockchain technology has contributed to the redesign. The improvements that were once impossible have been pushed forward. Blockchain is one of the leading innovations with the ability to influence the various sectors of the industry. It also has the ability to be one of the career-influencing innovations at the same time. We have seen an increasing inclination towards the certification of the Blockchain in recent years, and there are obvious reasons behind it. Blockchain has everything to offer, from good packages to its universal application and futuristic development. Let’s address the reasons why one should go for Blockchain certification.

5 advantages of certification by Blockchain:

1. Lucrative packages- Everyone who completes their education or upskills themselves wants to end up with a good bundle, not only is one assured of a good learning experience with Blockchain, but the packages are drool-worthy at the same time. A Blockchain developer’s average salary varies between $150,000 and $175,000 per annum. Comparatively, a software developer gets a $137,000 per year salary. For a Blockchain developer, the San Francisco Bay area provides the highest bundle, amounting to $162,288 per annum. There’s no point arguing that learning about Blockchain is a smart decision with such lucrative packages.

2. Growing industry- When you select any qualification course, it becomes important that you choose a growing segment or industry that promises potential in the future. You should anticipate all of these with Blockchain. The size of the blockchain market is expected to rise from USD 3.0 billion in 2020 to USD 39.7 billion by 2025. This will see an incredible 67.3 percent CAGR between 2020-2025. To help business processes, several businesses are outsourcing Blockchain technologies. This clearly demonstrates that there will be higher demand in the future for Blockchain developers and certified Blockchain professionals.

3. Universal application- One of the major reasons for the success of Blockchain is that it has a global application. It is not sector-specific. Blockchain usage cases are discovered by almost all market segments. In addition, other innovations such as AI, big data, data science and much more are also supported by Blockchain. It becomes easier to get into a suitable industry once you know about Blockchain.

**4. Work protection-**Surely you would like to invest in an ability that ensures job security. You had the same chance for Blockchain. Since this is the technology of the future, understanding that Blockchain can keep up with futuristic developments will help in a successful and safe job.

**5.**After a certain point of your professional life, you are expected to learn about new abilities that can help enhance your skills. Upskilling is paramount. Upskilling oneself has become the need for the hour, and choosing a path that holds a lot of potential for the future is the best way to do this. For all computer geeks and others who want to gain awareness of emerging technology, Blockchain is a good option.

Concluding thoughts- opting for Blockchain certification is a successful career move with all these advantages. You will be able to find yourself in a safe and secured work profile once you have all the knowledge and information. Link for Blockchain certification programme with the Blockchain Council.

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Everyone must have heard the news of crypto being the hype nowadays and due to that most people are wondering what is this blockchain technology that crypto works on. Blockchain Technology can be used in multiple spaces where large and secured data management is necessary.

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Revolutionary Application of Blockchain Technology

The invention of the internet in the mid-1900s had a revolutionary impact on communication technology. Since then, there has been nothing as disruptive as blockchain the way it is impacting procurement and shaping up industrial presence.
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Now if your curiosity is piqued, let me tell you a thing or two about blockchain and its impact on procurement at a concept level without drilling into its anatomical detail. This will help you grasp the definition much easily. It’ll also give you the foresight to understand how leveraging blockchain will be a tremendous breakthrough in fulfilling your procurement objectives.

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So, blockchain in simple language is a shared database that is omnipresent across multiple computers at any given time. It is like a growing set of data or ‘blocks’ that continue to build on with timestamp with linkage to the previous block thus forming a chain. Blockchain database is owned by more than one person on a shared network. Any block added is irreversible which prevents data manipulation. Via blockchain, data recorded today is saved for posterity.

Although the blockchain is a shared network of data with multiple users, there’s one single initiator who owns cryptographic key that helps add a new record to the chain and enables synchronization of data across the network. The key prevents violation of transactions performed on this platform.

Here’s an analogy: In medical bookkeeping, every medical record can be considered a block with a timestamp. This builds a medical history which neither a doctor nor a patient can modify or alter although the doctor owns the key to add new records and the patient owns the key to access the same thereby keeping medical information intact between the intended parties.

For long, the procurement industry has been examining blockchain to leverage its fullest potential; it is trying to understand its significance in business processes.


For the procurement industry, blockchain is a boon and here are three key benefits:

Invincible & Forever

The blockchain is a safe method that requires no trust, and the procurement industry can smoothly run its transaction on it. It is through cryptography that blockchain technology leverages to ensure digital identities of parties involved are established correctly. And as discussed earlier in the example of the medical bookkeeping, there are private keys owned by parties involved in the transaction and hackers cannot replicate them. Procurement functions leveraging blockchain can rest assured that their transactions will never expire and data accumulates timelessly for easy reference.

Borderless & Speedy

Blockchain transactions perform borderless by incorporating local tax and regulatory laws through smart contracts thereby expanding the scope of one’s business. Because of digital ledgers that blockchain distributes across a permitted network, paper-based invoicing that is tedious and time-consuming is obsolete. It is fair to say that since a blockchain transaction is recorded across multiple parties; it establishes seamless supply-chain points which is a commendable feature for the procurement industry to benefit from.

Visibility & Exploitation-Proof

For spend-analysis, blockchains offered end-to-end visibility for any category and given that the records are indestructible and not vulnerable to data-manipulation, all kinds of fraudulent possibilities are stalled. In fact, if there’s any kind of human joy that blockchain as a technology assures procurement is its ability to prevent child labor, slave employment, money laundering, diamond mining for war-funding, etc. So, if you are in the procurement industry, you can leverage blockchain to establish an audit trail to ensure your business is guarded against any nuisance.

To get in-depth knowledge of this technology and to develop skills to make a great career in this regard one can opt for Blockchain online training Hyderabad.

Your key takeaways include:

Understand how blockchain works
Common apprehensions about blockchain
Benefits of blockchain for procurement
Impact of blockchain on procurement’s future

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