Blockchain Smart Contract

A Quick Guide to Blockchain Smart Contracts

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Blockchain technology is the talk of the town. It is one of the widely discussed topics in the IT industry. Almost everybody has some knowledge about what blockchain is. Blockchain is a distributed ledger of digital records that cannot be edited. It provides the utmost security and it is the highest safe technology of all time. But there is one thing that always caught our attention i.e. “Smart Contracts”. Whenever we hear about blockchain, smart contract names come as suffixes like Blockchain-Based Smart Contracts. But very less people have a deep understanding of smart contracts.

Today we will take you through a quick guide to Smart Contracts. Read till the end!

What Are Smart Contracts?

Imagine a contract or an agreement that never sleeps, and never needs any intermediaries. That’s the beauty of blockchain-based smart contracts! Like any other contract or agreement between two or more parties, Smart Contracts are self-executing agreements coded on a blockchain development platform, for example, Ethereum. It is developed to automatically facilitate, verify, and enforce the terms of an agreement between parties.

Blockchain-Based Smart contracts are like digital contracts that don’t require any third-party trust that used to happen in conventional ways. Smart Contracts use blockchain technology, which is a secure and un-editable system. By integrating blockchain-based smart contracts, you don’t need to depend on a central authority to get assurance about whether agreements are getting followed or not.

Smart contracts are developed in codes and automatically executed when certain pre-defined conditions are met. People can interact directly and gain confidence in the process. It’s a seamless and transparent way to exchange value without the need for intermediaries.

Evolution of Smart Contracts

The concept of Smart contracts was introduced by Nick Szabo in the 1990s. He visualizes the digital contracts that will be self-executing and followed by certain predefined conditions store in the system. However, blockchain technology emerged around 2009 as Bitcoin, which facilitates a decentralized platform to implement Smart Contracts.

Later in 2015, Ethereum(a more versatile blockchain platform) was developed that helps developers build smart contracts over it. Solidity is a programming language that is a must to know for developers to create smart contracts. Solidity can simplify the process of coding and helps in deploying it over the blockchain.

Smart contracts get prevalent with the rise of ICO in the cryptocurrency landscape. ICO uses smart contracts to raise funds with the help of token sales which gives rise to a model of crowdfunding. As the technology matures, it founds applications beyond the domain of cryptocurrencies. Smart contracts are now being used for a variety of purposes for example Decentralized Finance DeFi, Supply Chain Management, Digital identity, and voting system and the possibilities are endless.

Key Features of Smart Contracts

Most of the features of the smart contract are taken from the blockchain technology as they are deployed over blockchain platforms:

  • Automation: Smart contracts are known for their automation feature as they are self-executing contracts and do not require any intermediaries. Once the certain predefined conditions coded into the contract meet, the contract executes automatically without the need for any human or manual intervention.
  • Secure: Smart contracts use cryptographic encryption to guarantee the security of data and transactions. The decentralized nature of blockchain makes it extremely challenging for malicious players to compromise the contract.
  • Trust and Transparency: When operating on public networks, all the parties can see how a smart contract is being used which gains trust and offers transparency.
  • Cost Savvy: Smart contracts eliminate the requirement for intermediaries, like lawyers or brokers, etc. The self-execution feature and transparency provided by smart contracts also reduce the chances of disputes, additionally reducing cost.
  • Versatility: Smart contracts are now being used in many industries and have witnessed numerous use cases. It helps in secure transactions, effective supply chain, enables DeFi, and much more.

Components of Smart Contracts

These digital smart contracts constructed on blockchain platforms, are built on blockchain, and they are not just lines of code but rather consolidate different fundamental components that furnish their usefulness and unwavering quality. The components of smart contracts are significant for engineers and clients to grasp their functionalities, as it delivers bits of knowledge into how these smart contracts are created and deployed, how blockchain and smart contracts are interrelated, and the mechanisms they work to ensure trust and transparency.

Programming Languages For Smart Contracts

Solidity: Solidity is one of the most chosen software programming languages to create smart contracts on the Blockchain Ethereum platform. In this language, it is essential to define the variable types. JavaScript, Python, and C++ are some of the languages used to code these digital contracts. developers who are well versed in above mention languages find it easy to develop smart contracts with solidity. Solidity code assembles into bytecode that can be easily deployed on Ethereum Virtual Machine(EVM).

  • Data Types Used in Solidity
    • Boolean
    • Integer
    • String
    • Address
    • Enum
    • Function
    • Array
    • Struct
    • Mapping
  • Benefits of Solidity
    • Solidity permits complex data types and member variables.
    • Solidity provides an Application Binary Interface (ABI) to enable type safety.
    • Solidity is a ‘Natural Language Specification’, used to turn user-centric specifications that any EVM machine can understand.

Vyper: Vyper is specifically designed for composing smart contracts on the Ethereum blockchain framework. Security, simplicity, and audibility are its core focus areas. Its syntax resembles Python which makes it easier to read and understand for those who are well-versed in Python programming language. Vyper follows a restrictive approach as compared to solidity to decrease the chances of errors. Some features are not compatible with Vyper for example, function overloading and recursive calls.

  • Data Types Used in Vyper
    • Boolean
    • Integer
    • Address
    • Bytes
    • String
    • List
    • Mapping
    • Struct
  • Benefits of Vyper
    • Vyper reduces the chances of vulnerabilities in developing smart contracts by eliminating certain features.
    • Vyper’s language syntax and protocols allow more effectively predicted and optimized gas usage compared to others. (GAS is the unit of computation on the Ethereum)

Data Storage in Smart Contracts

Data storage in smart contracts alludes to the storage of data and information within the blockchain network. Each smart contract deployed on any blockchain platform has its private data storage where only the contract can read, write, edit, and delete the data. The data stored in the storage can be in the form of a byte, array, string, or any value. There are mainly two types of storage a smart contract can have i.e. On-chain and Off-chain.

What is On-Chain Storage?

All the data stored on a blockchain decentralized ledger platform and can be accessible for all the stakeholders is known as On-Chain Storage and transactions that happened on it are called as On-Chain transactions.

What is Off-Chain Storage?

All the data stored on the private cloud and accessible to a few stakeholders are known as Off-Chain Storage and transaction done on it are called as off-Chain transactions. In Off-Chain storage, a third party will act as a guarantee, and all the stakeholders under Off-Chain storage deal outside the blockchain platform. When the deal is final outside the transaction will be done and recorded on blockchain.

Cryptographic Security And Digital Signatures

The role of Cryptographic security and digital signatures is vital in tightening the security and virtue of smart contracts. cryptographic security systems and digital signatures are vital parts of smart contracts, empowering secure and confided execution of exchanges and guaranteeing the accuracy of the agreement’s data.

  • Cryptographic Security: It works on cryptographic algorithms and protocols to safeguard data and provide secure transmissions within a smart contract ecosystem. SMPC is a cryptographic conventional protocol that permits various stakeholders to process an outcome without uncovering their inputs mutually. It guarantees protection and security during cooperative smart contract activities.
  • Digital Signature: Digital signatures in smart contracts assist with laying out the credibility of the source, guaranteeing that the agreement’s content/information/data remains unchanged. They additionally keep preventing malicious players from messing with the agreement’s information and give non-disavowal, meaning the underwriter can’t deny their association with the contract.

Development and Deployment of Smart Contracts

The process of developing and deploying Smart contacts is not easy compared to others. It requires specialization and a deep understanding of blockchain. Here are the steps involved in developing and deploying smart contracts.

  • Smart Contract Designing: Smart contracts are coded in a language known as Solidity. Blockchain Developers determine the contract’s reason, rules, and conditions, which include functions and variables needed to execute it.
  • Compilation: Firstly the code will get compiled into bytecode format to make it understood by everyone on the blockchain network. The compiler will check the code, verifies it, and then transform it into bytecode.
  • Deployment: After the code gets compiled it will become ready to deploy on a blockchain network. This process includes sending transactions onto the network that includes bytecode.
  • Execution: When the bytecode of the smart contract is deployed it will soon become ready for interaction on a blockchain platform. Smart contracts can be activated by users after doing transactions or any turns of events on the blockchain. Once the transaction is triggered contracts code will be executed.
  • Validation: To ensure accuracy and integrity, smart contracts needed to be validated so that there will be no malicious errors occur. For validating smart contracts rigorous testing and auditing will be done by the developers.
  • Deployment on the Main Network: After rigorous testing and validation, the smart contract will be deployed on the main network—the live blockchain network accessible by users. This allows real-world interactions and transactions with the contract.
  • Real-time Monitoring: Once a smart contract is live, it is important to monitor it continuously to check the behaviors or any abnormalities that happened and to fetch security breaches if happened any.

Smart Contract Platforms

A smart contract platform is a system or framework for building decentralized applications(DApps). It is similar to operating systems however, applications run on operating systems but blockchain-based smart contracts runs on specific platforms. As operating systems help launch dot com(.com), smart contracts create blocks that provide decentralized control. Let’s explore some of the most trending Smart Contracts Platforms:

Ethereum and its Role in Smart Contract Development

Ethereum is at the forefront of all the platforms when it comes to smart contract development. It was developed by Vitalik Buterin in 2015 and become popular since then. Ethereum is the first choice for whoever wants to create DApps. Ethereum has the capability to process the code on EVM(Ethereum Virtual Machine). As it ensures that smart contracts are working efficiently across all the networks and providing utmost security throughout the process. Ethereum’s native currency is ETH i.e. ether.

Ethereum plays a crucial role in the smart contract development process. It is the first blockchain platform that has introduced the functions of the smart contract. Its key roles include:

  • Smart Contract Creation: Ethereum provides a robust programming language called Solidity to develop highly functional smart contracts. It facilitates developers to integrate complex applications within smart contracts.
  • Seamless Execution: Ethereum’s platform offers an efficient ecosystem for the seamless execution of smart contracts over the blockchain. The PoW (proof of work) consensus mechanism of Ethereum guarantees that all the blocks will be seamlessly executed with each other which enhances reliability.
  • Decentralization and Trust: Ethereum eliminates the requirement of any intermediaries and offers a transparent ecosystem to trust blindly with the help of blockchain’s decentralized nature. Nobody can tamper with the contracts executed on the Ethereum blockchain platform.

Other Blockchain Platforms Supporting Smart Contracts

Ethereum is one of the widely chosen platforms for smart contract development but there are many other platforms also that are equally efficient.

  • EOS: EOS.IO is a blockchain platform solely designed to create high-performing Decentralised applications. It offers the utmost security, high speed, and unmatched scalability with the help of a proof-of-stake mechanism.
  • Tron: Tron focuses on developing DApps based on the internet that can provide a platform to share content. It has comparatively low fees with high transaction throughput.
  • Cardano: Cardano blockchain platform follows a scientific approach to smart contract development. It uses the Haskell functional programming language and possesses a strong governance standard to provide community engagement in decision-making.

Pros and Cons of Different Smart Contract Platforms

Every smart contract platform comes with a few advantages and disadvantages with them. Here we have compared all the pros and cons of all the smart contract platforms:


  • Pros:
    • Large developer community
    • Extensive tooling, and documentation
    • Widely accepted
  • Cons:
    • Scalability challenges
    • High transaction fees
    • Ethereum’s specific programming environment


  • Pros:
    • High transaction throughput
    • Low latency
    • Developer-friendly tools and libraries
    • Built-in governance mechanisms
  • Cons:
    • DPoS consensus mechanism
    • potential security vulnerabilities


  • Pros:
    • High transaction speed
    • Low fees
    • Decentralized
  • Cons:
    • Governance and centralization
    • Smaller developer community.


  • Pros:
    • Scientifically backed approach
    • Utmost security and scalability
    • Transparent governance model
  • Cons:
    • Slower Development Progress
    • Rigorous research-driven methodology
    • Smaller ecosystem compared to Ethereum.

Benefits of Using Smart Contracts

  • Automation: As smart contracts are self-executing they offer full automation in certain predefined conditions. it eliminates all human intervention and manual processes which ultimately saves time and money.
  • Transparency: As it is deployed on blockchain platforms it will become more transparent indeed and the data can be viewed by all the parties available on the network.
  • Cost Savvy: Smart contracts eliminate the need for any intermediaries as they are self-executing. Business can easily streamline their operations without the involvement of any third parties which reduces the expenses.
  • Speed: As they are operating digitally work on a fully automatic mechanism which reduces the need for lengthy paperwork and physical signatures which saves time. It can be executed anytime anywhere.
  • Accuracy: Smart contracts eliminate the errors easily that are hectic to solve in the manual process. It provides full accuracy throughout the process.

Challenges & Limitations

Every technology comes with a few disadvantages and limitations. Smart Contracts also possess some difficulties with it.

  • Difficult To Edit Or Change: Editing smart contract processes is next to impossible, any error or bugs in the code can be tedious and costly to correct.
  • Adaptability And Legal Clarity: It is difficult for a few firms like legal and law firms to execute smart contracts. As smart contracts eliminate third parties like lawyers it is difficult for parties to understand and solve the legal implications of public and private, commercial laws.
  • Costly Technology: Implementing smart contracts on public blockchains required transaction fees, which are known as gas fees, that depend on the complexity. Also, blockchain is still new and fewer developers know how to work on it which requires special expertise that charges a huge amount.

Used Cases of Smart Contracts

  • Clinical trials: Smart contracts have been prominently used in clinical trials it helping in data sharing across the institutes seamlessly with full accuracy and without any intervention. Blockchain platform helps in providing transparency as it plays a crucial role while making wide-reaching clinical trials.
  • Music Industry: Many new music artists are working in the industry who are dependent on streaming income. With the help of Smart contracts royalty payments become easier. Artists can stamp NFTs for exclusive musical content and sell them directly to their fans or others for JAM tokens.
  • Supply chain management: The supply chain is another segment where Smart contracts have proven their importance. Smart contracts developed for supply chain management would eliminate all third parties and intermediaries which means it does not require any daily auditing and managing inventories.
  • Insurance sector: Smart contracts can automate the policies and reduce the insurer’s costs and could help in lowering premiums. Policyholders will get paid quicker as compared to the current manual process.
  • Property ownership: Fractional ownership of real estate can be easily done with smart contracts. You can easily segment the ownership of the property to any number of parties. When somebody owns a token he will become co-owner of that property. It helps people to make micro-investment.
  • Voting in elections: Voting in elections becomes easy with smart contracts. Each vote is ledger protected due to which it cannot be decoded hence there will be no data theft possible.
  • Digital Identity: From reputational information to digital assets, you can store parts on smart contracts to frame a digital identity. At the point when smart contracts are associated with different web-based services, the counterparties can find out about the people without uncovering their identities. Smart Contracts could contain credit scores that banks can use to gauge expected risk.

Future of Smart Contracts

The future of smart contracts is ready for vital advancements with the combination of arising tech advances like AI, IoT, Oracles, etc These mixes can upgrade the capacities and usefulness of Smart contracts, making them all the more impressive and adaptable in different enterprises and applications. The following are a couple of ways these innovations can influence the future of smart contracts:

  • AI & Smart Contracts: Artificial intelligence is utilized to automate and improve the execution of smart contracts. Artificial intelligence algorithms can analyze enormous volumes of data to identify trends, patterns, and inconsistencies, which can be used to pursue more informed choices in smart contracts.
  • IoT and Smart Contracts: The integration of IoT devices with smart contracts empowers the execution of contracts in real-time data in the physical world, IoT sensors can track the location and conditions of products. This combination upgrades transparency, proficiency, and dependability in different spaces.
  • Decentralized Oracles: Oracles act as an extension between smart contracts and outer information sources. Artificial intelligence and IoT can add to the advancement of decentralized oracles, which give reliable and carefully designed data inputs to smart contracts.

Emerging Trends in Smart Contracts

Arising trends and advancements in smart contracts are forming the future of decentralized applications and blockchain-based frameworks. These trends and advancements mirror the continuous turn of events and development of smart contracts innovation, preparing for more adaptable, secure, and flexible blockchain-based applications in different ventures. We have listed a couple of remarkable trends:

  • Layer 2 Scaling Solutions: Due to the increasing demand for blockchain-based applications arising, there is a requirement for versatile solutions to address the challenges and limitations of current blockchain networks. Layer 2 scaling solutions, for example, state channels and sidechains, mean to expand exchange throughput and decrease costs without compromising security. These arrangements empower off-chain calculation and settlement while utilizing the security of the fundamental blockchain.
  • Hybrid Smart Contracts: They have consolidated the advantages of both on-chain and off-chain execution. By utilizing oracles and outside information sources, Hybrid Smart Contracts can connect with true events and information, making them more adaptable and reasonable. This approach empowers Smart Contracts to overcome any barrier between the blockchain world and outside frameworks, working with reconciliation with existing foundations.
  • Privacy-Preserving Smart Contracts: Privacy has been a major concern in open public blockchains, as exchange data are transparent and open to all. Advancements, for example, zero-knowledge proofs and secure multi-party computation are being explored to upgrade protection. These strategies take into consideration the verify the smart contract without uncovering sensitive information.
  • Governance and DAOs: Decentralized Autonomous Organizations (DAOs) are blockchain-based entities that work through contracts and decentralized navigation. DAOs are arising as another model for administration, permitting partners to by and large decide, allocate assets, and govern protocol upgrades. These organizations are fueled by smart contracts and give transparency, responsibility, and local community-driven navigation.

Also Read: ERC-4907: The Future of Cryptocurrency Transactions


The world of blockchain-based smart contracts is a game-changer and innovative realm that holds enormous potential for transforming different businesses. Through this blog, we have explored the essential concepts of blockchain and how smart contracts are based upon it.

We have perceived how blockchain-based smart contracts offer the utmost security, transparency, and productivity, empowering organizations to execute arrangements without the intervention of any third party and with complete trust. The decentralized idea of blockchain guarantees that these contracts are permanent and carefully designed, cultivating a climate of truthfulness and reliability.

As we explored more, it is fundamental to perceive the potential outcomes that blockchain-smart contracts carry. From streamlining the supply chain and further enhancing monetary transactions and revamping healthcare, insurance, real estate, etc. The uses of smart contracts are vast and rapid.

Also, it is vital to understand that smart contracts may come with a few limitations and challenges. While blockchain smart contracts offer huge benefits, they additionally accompany their arrangement of difficulties and limits. Security vulnerabilities, adaptability issues, and legal worries should be addressed to bridle the capability of smart contracts.

In any case, the future of blockchain-based smart contracts is undoubtedly promising
In this ever-evolving digital generation, where trust and efficiency are paramount, blockchain smart contracts give an encouraging sign. Via automating and streamlining complex arrangements, they prepare for a future described by utmost security, upgraded transparency, responsibility, and consistent interactions.

Thus, whether you’re a business visionary, engineer, or just a curious tech explorer, exploring the universe of blockchain smart contracts can be an illuminating and remunerating journey. Embrace the potential outcomes, stay informed, and let this quick guide be your venturing stone toward understanding and utilizing the ground-breaking force of blockchain smart contracts.

For any further professional guidance, contact us at CDN Solutions Group