What is Chainlink And How Does it Work?

Cryptocurrency /

Chainlink is one of the most popular cryptocurrency projects in the world today, delivering more than just the native LINK coin. Chainlink, which was formally established during the 2017 cryptocurrency bubble, has experienced tremendous development in tandem with the current rise in decentralized finance (DeFi).

The Ethereum-based network creates an environment that links real-world data with smart contracts on the blockchain, enabling millions of users to communicate in a decentralized and safe manner. This article defines Chainlink and explains in detail how it operates across various blockchains as the cryptocurrency gets popular acceptance.

Why Was Chainlink Invented?

The application of blockchain technology has expanded beyond peer-to-peer online financial transactions. One of the most prevalent applications of technology today is smart contracts, which allow parties to sign agreements that automatically take effect if certain conditions are satisfied.

These agreements are immutable and safe since they are stored on the blockchain. However, there is an issue when the automatic operation of smart contracts requires access to external data.

The problem is that blockchains lack a means for accessing external data. They rely on data streams, which offer information on pricing, insurance, temperature, and the Internet of Things, among other things.

The second issue is that data from third-party APIs for market pricing or similar information may be inaccurate. The technological answer to this issue is provided by Chainlink’s network of decentralized nodes called oracles. Oracles supply correct data, and Chainlink incentivizes them through a token-based incentive structure.

How Does Chainlink Work and What Technology Be Behind It?

Chainlink depends on a network of oracles to provide safe and reliable data for smart contract integration on the blockchain. This system operates via three contract types: order-matching, reputation, and aggregation.

Here’s how it functions:

When a user of a smart contract wants to connect to a real-world data source, they send a service level agreement (SLA) request over the Chainlink protocol.

Chainlink then utilizes the request’s metadata to identify the oracles (order-matching) that will deliver the required data.

Oracles evaluate real-world data and report it on the blockchain, a process in which an internal system verifies the veracity of the sources. This final step is accomplished by the aggregating contract, which inputs the most accurate result from the oracles on-chain.

Those who seek to access the real-world data pay a nominal price, which is transferred into the native LINK currency and used to incentivize the nodes.

As demand for Chainlink’s technology grows, scalability difficulties have emerged. Nonetheless, the project’s crew has launched a second-layer network that it calls Chainlink 2.0. The new initiative provides “decentralized oracle networks” (DONs), which enable oracles to process external data sources off-chain prior to registering them on the blockchain.

Chainlink will be at the forefront of putting traditional data inputs on the chain for smart contract execution due to the increased usage of DONs.

Is Chainlink Real Money?

You may not refer to Chainlink as “real money,” but it does not preclude its usage as currency. Specifically, the LINK token has value, which enables it to act in the ecosystem like any other money would in a monetary system.

You may send and receive LINK and deposit it in DeFi protocols to get rewards, just as you would with a savings account.

It is also important to note that the token has a “currency” element since it has grown similarly to other cryptocurrencies in order to be accepted at merchant locations worldwide.

LINK, like Bitcoin and other cryptocurrencies, has a fixed quantity of 1 billion tokens. It is significantly more than Bitcoin’s 21 million, yet it is essential to the cryptocurrency’s total long-term worth based on the supply-and-demand theory.

At the time of writing, there are around 419 million tokens in circulation, and the price of LINK relative to the US dollar is $38. In the next years, the token’s value may substantially increase.

Fees And Expenses of Chainlink

Chainlink, like other cryptocurrency initiatives, incurs expenditures and fees. However, costs are typically negligible and depend on which protocol features you employ.

When obtaining external data, users incur the platform’s first significant cost. Oracles or node operators charge a fee to supply the required data, and each oracle determines its own pricing structure. Therefore, when utilizing the protocol, be aware that the prices may differ.

Nodes set gas costs at 20 Gwei by default, however, they have climbed considerably in the past due to Ethereum’s network congestion.

Exchanges and brokers charge transaction fees for sending, receiving, and exchanging Chainlink on their platforms. Therefore, there are fees associated with deposits, trades, and withdrawals. The majority of exchanges and brokers do not impose deposit fees, although you may be charged between 0.1% and 0.2% for every trade. Withdrawals incur fees ranging from as little as 0.70 LINK to 10.0 LINK (at the time of writing).

What Are The Benefits Of Chainlink?

Connecting smart contracts on the blockchain to real-world data sources is one of Chainlink’s most advantageous features.

Oracles are essential in the blockchain and cryptocurrency industries. Oracles are utilized by both decentralized exchanges (DEXs) and decentralized finance (DeFi) protocols, with the former using them to retrieve cryptocurrency values and provide them to consumers.

By granting on-chain smart contracts access to off-blockchain sources, Chainlink contributes to the security and accuracy of data. In addition to enabling trustless transactions and communication, Chainlink eliminates the requirement for a central authority.

Through a decentralized and blockchain-agnostic end-to-end capability, the crypto community has access to inter-network communication. Now, both public and private blockchain users have access to correct data sources.

Using a network of oracles eliminates single points of failure in the event that one of the nodes is hacked.

Can Chainlink Be Used Anonymously?

Chainlink is a protocol platform based on Ethereum, with the Ethereum blockchain enabling anonymity for transactions. However, because the blockchain is public, all transaction records and addresses are viewable. In this instance, a user cannot be identified by examining the wallet address alone. In this way, you may use Chainlink anonymously, and you will remain anonymous so long as no one ties your address to your actual identity.

How Safe is Chainlink?

It may be difficult to determine the security of a cryptocurrency project. This is due to the fact that the young industry is still implementing measures to make projects safer. However, blockchain technology is inherently safe, and Chainlink benefits from features such as tamper-proof and censorship-resistant transactions.

The inclusion of provably secure nodes has increased the security of the network for all users of Chainlink, a developing ecosystem that benefits from decentralization.

Oracles also function in a transparent environment, allowing network members to examine and inquire about their reputation in public. Before transmitting data to the network for aggregation, oracles cryptographically sign all data.

Given the possibility of data modification and assaults, Chainlink has created a proof-of-reserve (PoR) method that is essential for assuring data integrity.

In the DeFi industry, where consumers rely on real-time data, the PoR algorithm protects them from potentially fraudulent off-chain activity. Thus, both decentralized financial protocols and conventional financial systems may operate in a secure setting.

What Teams Are Working On Chainlink Development?

Chainlink is one of the most tech-savvy teams in the industry, and its developers are among the best in the world. There is also a staff of advisers, some of whom are affiliated with the world’s leading academic institutions.

The Chainlink team consists of:

  • Sergey Nazarov 

In addition to Secure Asset Exchange, Sergey built the decentralized email service CryptoMail.

  • Steve Ellis 

The software developer and Nazarov co-founded Chainlink after working together on a bitcoin exchange startup.

  • Ari Juels 

Ari Juels  He is a professor of computer science at Cornell Tech and was previously the director of the crypto project IC3.

  • Andrew Miller 

Miller is a technical adviser for both Chainlink and the cryptocurrency projects Zcash and Tezos. He is a professor of computer science at the University of Illinois.

Which Financial Institutions Are Invested In Chainlink? 

Chainlink has worked with over 30 firms from diverse industries across the world. As more individuals find it simple to utilize any API to acquire off-chain data for smart contracts, the firm has grown. Numerous financial institutions and businesses have invested in the protocol as a result of its extensive application scope.

In addition to powering top DeFi networks like Aave, Synthetix, and yearn. Finance, the Chainlink ecosystem is a component for leading multinational corporations and startups. Here are a handful of these partners and the purposes for which they use Chainlink.


ConsenSys is the owner of OpenLaw. It is a blockchain firm that focuses on legal smart contracts. The incorporation of Chainlink’s oracles enables the transfer of records on-chain. In 2018, the cooperation was announced.

RTrade Technologies Ltd

The headquarters of RTrade Technologies is in Vancouver, Canada. Chainlink is used in the company’s distributed data storage applications and financial data archives. In 2018, the two firms began working jointly.


Wanchain is a blockchain firm established in Singapore that employs Chainlink oracles to access financial market data. Wanchain’s primary objective is to promote blockchain interoperability, a notion that substantially benefits from Chainlink’s safe and accurate off-chain data collection. In 2018, the firms began cooperating.

Web 3 Foundation

In 2018, Chainlink and Web 3 Foundation formed a partnership, with the Swiss foundation utilizing off-chain data feeds and APIs to provide access to smart contract data in payments. Polkadot, a blockchain technology, has utilized Chainlink’s oracle environment as a result of the agreement.


Oracles were purportedly utilized in a test setting to push financial data from many banks and financial institutions, including Barclays, Santander, BNP Paribas, and Fidelity, as part of a proof of concept demonstration effort.

Google Cloud

Google Cloud included the oracle tool for smart contracts into its BigQuery service. In 2019, the cooperation was announced.

Chainlink Mining

Chainlink is not a cryptocurrency that can be mined in the same manner as Bitcoin. Instead of a Proof of Work (PoW) process, Chainlink employs a Proof of Stake (PoS) mechanism and node operators validate transactions to protect the network.

Validators stake their tokens in order to participate in the process of linking off-chain data sources to the blockchain. In exchange for their involvement in the network, nodes are rewarded with LINK from user deposits.

Nodes also profit from fees negotiated as part of agreements to supply off-chain data. This is paid for on the Ethereum network using gas.

Chainlink Wallet

Finding a more secure means to store your LINK tokens should be your top priority; for this, you need a cryptocurrency wallet, of which there are various options to consider.

A cryptocurrency exchange wallet is a practical alternative for short-term storage. The same holds true for mobile wallets like Trust Wallet and online wallets like Metamask. These wallets provide a greater level of ease and security.

However, if you want the utmost level of protection for your LINK tokens, you should acquire one of the supported hardware wallets. The fact that these wallets allow cold or offline storage and do not require a continual internet connection increases the security of your assets. LINK may be stored and used securely on Trezor and Ledger hardware wallets.

Is Chainlink Worth The Investment?

Does it make sense to invest in cryptocurrencies? The easiest way to address this issue is to explore the many facets of investment. As experts frequently note, no investment is simple, and every investment has some degree of risk.

The same is true for Chainlink, which may be utilized as an investing tool as the popularity of cryptocurrencies as speculative instruments grow.

In its brief lifetime, the LINK price has fluctuated from a low of $0.12 to a high of $44, as well as from $20 to a low of $6. The exponential benefits continue to entice more and more individuals. But should this be the sole criterion for determining if Chainlink is an investment worth making?

Clearly, the answer is no. It is essential to do market research, weighing the potential dangers against the potential rewards. This should occur prior to deciding to take a long or short position or to purchase Chainlink and hold it.

In addition to market volatility, you need also consider how to keep your cryptocurrency securely. For example, if you lose your wallet, you will lose your money. As said previously, selecting the greatest wallet for your money is crucial. However, LINK is a long-term endeavor, and many investors feel that its ties with well-known corporations make it an attractive investment opportunity.

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