Everything You Need To Know About Smart Contracts

With the digitalization of modern society, an increasing number of economic activities are moving into the digital space, creating a growing need for systems that can securely execute online agreements between people without the risk of fraud. The rise of Web3 and the development of blockchain networks, where data is stored transparently and is generally immutable once recorded, are transforming the contract creation and execution. This is possible because of smart contracts that automate the entire process, making contract execution faster, more efficient, and safer for all parties involved, which is why they are considered one of the most significant applications of blockchain technology. Here is a simple explanation of what these contracts are, how they are used, and what benefits they offer.

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What Are Smart Contracts?

A contract itself represents an agreement between two or more parties that grants each party certain rights in exchange for fulfilling agreed obligations. The simplest example is signing an employment agreement, in which the employee gains the right to a salary in exchange for performing specific work tasks that may generate profit for the employer. The employee receives compensation after fulfilling their contractual obligations.

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This concept is similar to that of smart contracts, but the word ”smart” in the term indicates that it refers to an agreement made between people online and that is executed within a digital environment. 

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Furthermore, a smart contract is a piece of computer code that automatically executes actions when certain requirements are met. A simple example would be an agreement between two people regarding the online sale of a concert ticket. Before sending the ticket, the seller wants to be sure the buyer has paid for it. A smart contract checks this automatically, and if the payment is made, it releases the ticket to the buyer without intermediaries. This is possible because of programmed commands written into their system, which is one of the key features that make smart contracts a crucial component of blockchain technology.

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What Are They Used For?

Automated Transactions

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With smart contracts, there is no need for manual payment verification or transaction approval. Once the code recognizes that the predefined conditions have been met, it automatically executes the agreement. For example, when a payment is completed, the smart contract identifies it as a fulfilled condition and automatically sends the product or service to the buyer. Smart contracts are commonly used for online purchases, payments, and insurance systems in which compensation is automatically paid out if damage or loss occurs.

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Digital Assets

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Smart contracts play an important role in the management of digital assets. When someone purchases a digital token, the smart contract on the blockchain automatically records who owns it. Therefore, it serves as proof of ownership. Thanks to this transparent record, digital assets can be further traded without the involvement of a centralized institution, while the exchange itself remains secure.

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Decentralized Finance (DeFi)

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Decentralized finance is a system for trading and managing money within blockchain technology and cryptocurrencies without the involvement of banks, which are replaced by peer-to-peer loans and transactions. The role of smart contracts is to replace banks in approving transactions by verifying the rules of the system and executing transactions once all conditions have been met.

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Smart Contract Life Cycle

Phase 1: Creation

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This is the phase in which the smart contract is created, and where its rules and conditions are defined. It is also the stage where the actions that the contract is allowed to perform once those conditions are met are determined. After the rules are carefully defined, the next step is compiling, where the written code is translated into a language that can be executed on the blockchain network.

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Phase 2: Deployment

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Once the contract has been completed, it is deployed to the blockchain and becomes immutable, meaning it can’t be changed again.

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Phase 3: User Interaction

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In this phase, users can interact with the smart contract by triggering its functions through a specific action. For example, when a user sends money, the smart contract receives information about the transaction, interprets it in relation to the predefined conditions, and then waits for network confirmation.

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Phase 4: Validation

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The blockchain receives information from the smart contract and verifies whether the data confirming that the conditions have been met is valid. If it is, the next step is approved.

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Phase 5: Final Settlement and State Update

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After confirmation from the previous step, the smart contract automatically executes the agreed action and records the resulting state change on the blockchain, for example, who the new owner of an NFT is, or sends the product or service to the buyer.

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Smart Contract Benefits

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Immutability

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Traditional contracts may sometimes contain terms that require interpretation, whereas a smart contract always has clearly defined terms that, once written, can’t be changed. In this way, smart contracts eliminate the risk of unpleasant surprises for users.

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Identity Security

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When smart contracts store information as public data, they keep the user’s name under a code.

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Removal of Intermediaries

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By operating automatically, smart contracts eliminate the need for a third party, which reduces administrative overhead and makes transactions more efficient and cost-effective. Unlike banks, smart contracts are also active 24/7.

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The Future of Smart Contracts

With their ability to automate online transaction processes and simplify the exchange of goods, smart contracts support decentralized finance. As a result, smart contracts are expected to play an increasingly significant role in digital business and online interactions. However, this innovative solution still faces some challenges, such as the digital divide among the population, which may slow down its widespread adoption. Regardless, with more and more economic activities moving into the digital world, smart contracts certainly have strong potential to become a widely accepted solution, a trend that will become clearer as adoption continues to grow over time.