In-depth analysis of API3: decentralization, data flow and sustainable economic model

Abstract

API3 is an innovative first-party oracle project focused on enabling data providers to Run your own oracles, thereby ensuring first parties deliver data directly to blockchain applications without the need for intermediaries, enhancing data integrity and solving critical trust issues. API3 ensures data quality standards by managing and monitoring data providers. Data providers that fail to meet the standards will be replaced, ensuring data integrity while reducing users' reliance on trust.

By using Airnode technology to deploy first-party oracles and decentralized APIs (dAPI), API3 promotes better communication between data providers and blockchain networks. Direct, secure, and efficient connection, this mechanism alleviates possible problems with traditional third-party oracles, ensures higher security, transparency, and efficiency, and reduces data transmission costs and potential risk points.

The combined mechanism of OEV Network and ZK-Rollup brings greater competitiveness to API3, and also brings significant progress to the dAPP and oracle tracks. . This solution unlocks new value streams for stakeholders by capturing MEV and feeding value back into the protocol ecosystem, promoting a more balanced and financially sustainable ecosystem.

API3 has a carefully designed, unique and powerful token economic model. Its tokens are fully empowered, fighting inflation through the burning mechanism and staking rewards locked for one year, and encouraging staking through dynamic APR. More importantly, the design of its economic model incorporates the operation and risk factors of the protocol itself, bringing a self-regulating mechanism of negative feedback loops, allowing stakeholders and governors to quickly reach governance decisions around the long-term development of the project. Consistent, and then improve the stability of the agreement by suppressing excessive risks, and ultimately form a positive cycle for the development of the agreement, benefiting many parties in the long term.

With innovative first-party oracle methods and a strong focus on data reliability and security, combined with DAO's fully decentralized governance model, and With a wider range of applications in data provision, the future of API3 will not be limited to providing oracle price feeding services as an intermediate component, but may become the infrastructure for the development of on-chain ecology and diversified dApps, providing more opportunities for us The ubiquitous API applications in real life provide the possibility of on-chain development, setting new standards for the oracle track while constantly promoting innovation in the ecosystem.

In the evolving Web 3.0 ecosystem, decentralized applications (dApps) are experiencing rapid growth, and their increasing value highlights their potential while also expanding the need for real-world data integration. Demand has made the decentralized oracle track one of the most important components of the on-chain ecosystem.

However, a major challenge remains: how to seamlessly and securely integrate off-chain data into the blockchain ecosystem. In this context, API3 emerged as a solution to this challenge, aiming to revolutionize the data interface between off-chain and on-chain environments.

API3 was launched in December 2020 and is a pioneering A revolutionary first-party oracle project, its goal is to enable most APIs customized for centralized applications to enter the decentralized world of Web3.0 without giving API providers or developers of dAPP projects bring significant burden.

Different from traditional third-party oracle networks, API3 focuses on first-party data provision, and its infrastructure is based on decentralized API (dAPI). Through serverless oracle node technology Airnode allows API providers to directly connect their data to dApp projects, eliminating the dependence on third-party middlemen for data aggregation and transfer that are common in traditional oracle networks. dAPI is inherently compatible with blockchain technology, enables cross-chain integration, and provides cross-platform oracle solutions.

API3’s governance model is based on a Decentralized Autonomous Organization (DAO), giving token holders decision-making power and ensuring a transparent and community-driven ecosystem. We have reason to expect that the innovative framework of API3 has the potential to meet the key needs of decentralized and trustworthy data sources in the blockchain field. It may set a new standard for the oracle track and on-chain data integration, and create a more A connected and efficient decentralized future.

Source: https:/// /www.linkedin.com/in/heikki-v%C3%A4nttinen-83a86380/?originalSubdomain=pt

Heikki Vanttinen , co-founder of API3, has accumulated rich work experience in multiple fields, especially in blockchain technology and smart contract development. Heikki served as the founder and CEO of CLC Group, focusing on achieving seamless integration of smart contracts and the real world, and demonstrated outstanding capabilities in multiple disciplines such as business development, decentralized application development and research.

At the same time, his entrepreneurial experience and marketing and sales experience also demonstrate his leadership and business insight in cross-functional team management, business expansion and new market development. .

Source: https://www.linkedin.com/in/burak-benligiray-b3055715b/< /em>

Burak Benligiray, co-founder of API3, leader of the core technical team, PhD in electrical and electronic engineering, worked as a research assistant in the university, and dabbled in Many different technical areas. Burak has extensive experience and excellent technical capabilities in the field of technological innovation and research. He has demonstrated deep expertise in the field of blockchain technology and smart contracts, and is committed to building a decentralized and trust-minimized system. .

According to Crunchbase data, on November 12, 2020, API3 received a US$3 million seed round of financing led by Placeholder. In this round of financing, a total of 13 institutions including Pantera Capital, Accomplice, CoinFund, Digital Currency Group, Hashed, and Solidity Ventures participated in this investment.

Meanwhile, API3 raised a total of $23 million in a public token sale in December 2020.

On January 29, 2021, it was announced that it had reached a cooperation with the Polkadot Layer 2 protocol Plasm Network and would introduce Airnode-supported APIs and data price feeds into the Polkadot ecosystem.

On April 20, 2021, a 10-year partnership with the Open Banking project was announced to open up the use of APIs to allow developers to build around financial institutions applications and services, and develop blockchain solutions.

On June 3, 2021, it reached a cooperation with the encrypted credit data company Credmark and launched a decentralized risk model platform to score decentralized financial projects.

On March 25, 2022, it was announced that it had reached a cooperation with Metis, the Ethereum Layer 2 expansion solution, to provide developers on Metis with a Web 3 API directory and for the Metis ecosystem. The system provides price feeds.

On May 4, 2022, it was announced that it would cooperate with the Australian National University to launch a quantum random number generator QRNG that can be used in smart contracts, ensuring unpredictable randomness. .

On January 29, 2024, the launch of the ZK-Rollup platform OEV Network was announced to increase the revenue of DeFi protocols by capturing and utilizing oracle machines to extract value. Not only ensures instant revenue for dAPPs, but also enhances security, transparency and accountability through on-chain auctions.

The overall mechanism of API3 is shown in the figure. Among them, API3 takes the form of a decentralized autonomous organization (DAO) as a platform to connect all parties together. API providers earn revenue by providing data, and dAPP enjoys the data services provided by dAPI by paying subscription fees. If users of dAPP find that there is a problem with dAPI's data, they can submit a claim. Token stakers will receive rewards and voting rights for API3 DAO through the staking mechanism. The specific mechanism will be described in detail below.

In Web 2.0, APIs serve as a key bridge for data exchange between various digital platforms. As the key to digital interaction, they enable software applications to communicate seamlessly, supporting the functionality of modern digital services in our lives. For example, when we use a booking website to book a flight, the website usually relies on APIs to obtain real-time pricing and availability from various airline databases.

The concept of dAPI extends the application model of traditional API to the decentralized field. Unlike traditional APIs that rely on centralized servers and third-party intermediaries, dAPIs provide a direct data feed from data providers to users without any intermediaries.

API3’s dAPI is built on the oracles that support Airnode, allowing API providers to connect their data sources directly to the blockchain network, enabling dApps to Secure, trustless access to real-world data.

API3 provides both managed dAPI and self-funded dAPI two data interface service types for developers to use, meeting different potential use cases. At the same time, API3 uses a multi-signature wallet and governance protocol to manage changes to its dAPI configuration, balancing flexibility and security.

Among them, managed dAPI aggregates data from multiple first-party oracles and provides a more reliable and stable data source through the median function, which is suitable for Production environments that have high requirements on data quality and stability. Under the managed dAPI model, users need to pay a fee to API3 to use the service, which will be used to cover operating and management costs.

The specific mechanism is shown in the figure. Each API provider first sends data to a single aggregator, which processes and integrates data from different sources to ensure that dAPP receives reliable and consistent information. dAPP can obtain processed data by calling dAPI and provide services based on these data. The API3 DAO supervises the entire process through governance mechanisms such as voting to ensure the transparency and security of the system.

Self-funded dAPIs, on the other hand, allow users to provide data through a single first-party oracle at their own cost. This approach provides developers with more flexibility and autonomy, allowing them to experiment and use data interfaces at a lower cost, and is especially suitable for projects in the early stages or for cost-sensitive applications. In this model, users need to provide funds for the operation of self-funded dAPI, and these funds will be used to pay for on-chain transaction fees and ensure timely updates of data.

The innovation brought by API3 in the dAPI model may mark a paradigm shift in data consumption models in future decentralized environments. This approach not only directly It reduces the delays, costs and potential failure points associated with third-party middlemen, enhances the security and reliability of data, and represents a step forward in the pursuit of fully decentralized and efficient data solutions in Web3.0. An important step forward.

At the same time, the concept of dAPI makes API3 no longer limited to oracle price feeding services, but also provides services for everything in our lives. Ubiquitous API applications provide potential implementation possibilities and support for decentralization.

Airnode is the core key component of API3. This technology allows API providers to convert their APIs into dAPI, building a bridge for direct communication between off-chain APIs and on-chain smart contracts, realizing real-world data transfer. Seamless flow of the blockchain ecosystem.

Specifically, Airnode is a serverless oracle node, and the key to its architecture is to emphasize decentralization and security. The node is both easy to deploy and maintain by API providers and highly scalable.

Unlike traditional oracles that often require complex setup and intermediary services, Airnode's design allows API providers to directly become first-party oracles without the need for third parties With participation, this design principle ensures that data integrity and security are maintained.

In addition, another big advantage of Airnode is its simplified API integration process. This allows API providers to set up and operate with minimal blockchain knowledge and cost. This feature makes the process of API providers becoming first-party oracle nodes simple and frictionless, promotes a more democratized use of blockchain technology, and in turn encourages a wider range of data providers to participate in the centralized data market. .

Therefore, in essence, the design of Airnode is not limited to an oracle solution, but to build decentralization, security and Foundational components of a user-centric data ecosystem. Through Airnode technology, API3 will hopefully solve common challenges faced by traditional oracle services, such as transparency, trust, and efficiency, thereby paving the way for more powerful and reliable dAPP development.

In the field of cryptocurrency, miner extractable value (MEV) has always been an important concept. Since transactions on the chain are not completed instantly, block producers (such as miners or validators) can Manipulate blocks by transaction sequence, insert, or replace transactions and earn additional profit value. Oracle Extractable Value (OEV) can be considered a subset of MEV.

Recently, API3 announced the launch of the ZK-Rollup platform OEV Network. OEV Network is a ZK-Rollup network customized with Polygon CDK to capture all API 3 OEV generated by dAPP to alleviate the value leakage problem prevalent in current DeFi operations. At the same time, the adoption of rollup makes the entire process transparent and verifiable, making the entire process more decentralized and trustless, and enhancing user confidence in participation and use.

First of all, we can understand what OEV is through an example. Imagine we are participating in an auction where everyone's bids are visible and the auctioneer can choose the order in which bids are considered. This situation creates an opportunity for the auctioneer to earn additional income by strategically placing certain bids to benefit himself or others.

When oracles update or push data to the blockchain, even small differences in timing or accuracy of the information can occur depending on when and how the information is used. All may create opportunities for “suppliers” to capture potential value, such as front-running, arbitrage, or liquidation.

The OEV network developed by API3 aims to make this process more systematic and democratic. The OEV network operates as a specialized order flow auction platform that captures the value generated by oracles during data updates and redistributes that value to DeFi protocols and their users. This process is performed through an auction, where the highest bidder wins the right to update the data source, and the fee they pay for this is shared with those dAPPs that use the API3 data source.  

By capturing OEV, API3 introduces a novel revenue stream for dAPPs, strengthening the economic model for API providers and dAPP projects. Among them, the winning bidder needs to pay an additional 10% fee based on his bid, half of which serves as a source of revenue for API3, and the other half will be allocated to the oracle provider. This way the captured OEV is allocated to the API provider. It will also be able to encourage them to directly participate in the construction of the Web3.0 ecosystem, thereby cultivating a more fair and transparent data ecosystem. At the same time, its on-chain mechanism for auctioning feed rights also creates a decentralized and secure environment, promotes a fairer data ownership model, and mitigates the risks associated with centralized data feeds.

It is worth mentioning that Polygon co-founder Sandeep Nailwal praised the innovative solution of API3 oracle value extraction and called it a DeFi ecosystem important breakthrough.

Overall, API3’s OEV network brings significant progress to the dAPP and oracle fields, solves key inefficiencies, and This unlocks new value streams for participants and has the potential to lead to a more balanced and financially sustainable ecosystem for data providers and users in the future.

According to the information provided in the white paper, API3's protocol revenue sources mainly include subscription fees paid by dAPP, Oracle Extractable Value (OEV) and Service Coverage. The uses of protocol revenue include but are not limited to supporting the continued development of the project, improving network security, operating costs, staking rewards, and rewards for potential stakeholders within the ecosystem. API3 governs the project through the DAO and determines the allocation of its resources to ensure the sustainability and stable growth of the project.

According to Etherscan data, the current price of $API3 tokens The maximum total supply is approximately 128 million coins, and the circulating supply is approximately 103 million coins. The uncirculated portion is the minted reward tokens obtained by token stakers, and these tokens will not be unlocked until one year after the reward date.

As shown in the figure, the current largest holding address of $API3 tokens is the $API3 pledge pool, and the second largest address is its treasury. The combined proportion of the two accounts for 62.6% of the total token circulation. Apart from this, exchange addresses like Binance and OKX are also major holders of $API3. Therefore, the number of $API3 chips actually circulating in the market is not large, which avoids the occurrence of severe selling pressure to a certain extent.

Overall, API3 comprehensively adopts the three aspects of pledge, mortgage and governance in its token economic model. Its purpose is to incentivize participation, protect the network and drive the growth of the project by ensuring that token holders can influence the trajectory of the project, effectively manage resources and participate in the expansion of the ecosystem. By combining the three utilities to build a good token system, we can achieve true decentralization of governance and operational activities.

The staking mechanism is the most important core component of the API3 token economic model, designed to combine stakeholder incentives with the long-term success of the project. By staking $API3 tokens, holders can earn newly minted tokens (rewarded weekly) as staking rewards and gain voting rights in the governance of the API3 DAO. At the same time, the staked tokens will also be used as collateral, and when the dAPI fails, these tokens will be used as compensation for users.

In order to ensure the continuity of services, the quality of products and the full decentralization of governance, API3 has set a "staking target" and always pursues that the number of pledged tokens should reach a specific amount of the total token supply percentage.

The current pledge target of API3 is 64,097,566 tokens, but the current actual pledge number has not yet reached the target. Therefore, as shown in the figure, the API3 DAO will increase the APR by 1% on each subsequent reward date to incentivize more holders to stake their tokens until the staking target is reached or the APR is increased to 75%.

Since the token rewards received by stakers are minted, this will theoretically lead to token inflation. Therefore, in order to strike a balance, API3 designed a deflation mechanism to solve the problem. First, as shown in the figure above, minted token rewards will not be unlocked until one year after the reward date,This approach encourages participants to hold and stake tokens for the long term rather than short-term speculation.

Secondly, API3 DAO will require users of dAPI to burn or lock $API3 tokens for a specific time to obtain data services. As shown in the figure above, by looking at the open source code of API3, we found that it allows any address to decide whether to enable or disable its own burning permissions, and to burn a specific number of tokens by calling the Burn function.

This method offsets the inflation caused by newly minted tokens to a certain extent, effectively reducing the market supply pressure of $API3 and benefiting This will increase the staking confidence of all token holders and enhance the staking confidence of long-term investors and participants.

By looking at the past pledge situation of $API3, we also found that since 2021, the number of pledges of its tokens has been in a very stable state and has not experienced violent fluctuations. Even with the recent sharp increase in the price of $API3 tokens, the number of pledges has remained stable overall, and there has been no large-scale selling, which proves the effectiveness of the API3 pledge mechanism.

API3's mortgage mechanism can be thought of as an on-chain oracle service insurance product. This function is achieved by providing quantifiable security, and this security is in the form of Service Coverage. reflect.

The entire process can be summarized into the following key steps:

Essentially, this process is similar to buying an insurance, but it does not require any Traditional insurance policy. Once the protocol confirms that the functionality of the dAPI is down, users will be compensated from the staking pool. At the same time, API3 also supports multiple cryptocurrency types (such as ETH), demonstrating the diversification of its services and collateral mechanisms.

More importantly, API3’s mortgage model is designed and brings a self-regulatory mechanism of a negative feedback loop to avoid the system’s own overexpansion and potential Self-destructive behavior. Specifically, as API3 DAO expands and adds new dAPI users, the risk of its overload causing dAPI to malfunction and triggering compensation also increases.

Therefore, the potential demand for compensation provides API3 DAO with an incentive not to excessively increase the load during the governance process, ensuring that API3 does not bear unnecessary burdens for short-term benefits. risks of. This approach helps encourage and promote the responsible, stable growth and sustainability of development of API3 DAO.

In this way, the incentives of dAPI users and other token stakers are aligned because they all have a common goal of avoiding system failure. Stakeholders are incentivized to monitor and maintain the health of the dAPI due to possible insurance payouts, while users benefit from the stability and reliability of this system.

And, because service guarantee claimants must stake tokens to make claims, this increases the cost of making claims, thereby reducing the chance of false or abusive claims. . This mechanism prevents the system from being abused by those who may use the safeguard mechanism to make claims for personal gain rather than the health of the system.

Ultimately, the regulatory mechanism of negative feedback loops will be able to help curb violent fluctuations in token values. In the token economy, stability is key to attracting long-term investors and users. By curbing excessive risk and failure rates, this cycle helps build confidence in the $API3 token as a long-term store of value.

In API3 DAO, the only way to obtain governance voting rights is to stake $API3 tokens. Therefore, the governing party bears all the risks and rewards of API3. As mentioned before, if the governor does not actively participate and a large number of claims occur, then they will bear the loss, and the tokens they stake will flow back into the market and be purchased by the new governance party.

On the contrary, if governance is proper, the supply of $API3 tokens in the market will also be reduced accordingly, which may lead to an increase in token prices due to scarcity. Rising, allowing managers to gain more benefits. This approach enables API3 DAO to continuously improve itself and recover from failures, achieving true decentralization.

In general, API3's token economic model is a carefully designed and complex model. The $API3 token is endowed with multiple uses and needs such as pledging, acting as collateral, insurance pool, governance voting rights, obtaining dAPI services, etc. It not only counters the potential of the token by setting a lock-up period for rewards and a mechanism for burning tokens. Inflation issues have reduced selling pressure.

More importantly, its economic model combines the depth of the $API3 token with the operations and risks of the project itself, as well as the value (supply) of the token. Together, in this case, governance rights will no longer be an insignificant option, but become the most important tool for participants to implement incentives, maximizing incentives for token pledgers to actively participate in governance to reduce Your own risk of loss.

In this way, API3 closely links the long-term development of the project itself with the stakeholders, not only ensuring the long-term stability of the project The development has greatly promoted the realization process of true decentralization.

In recent years, the oracle machine track has experienced significant growth and development with its unique technical capabilities and wide range of application scenarios. According to CoinGecko data, the total market value of the oracle machine track has now More than $13 billion. As an integral part of blockchain technology, oracles bridge the information gap between the cryptographic world and the real world, providing smart contracts with access to external data.

Chainlink has always been the absolute leader in the oracle track. According to data from DefiLlama, Chainlink can currently provide services to more than 50 different networks and 360 protocols. TVS (Total Value Secured) has exceeded With a market value of US$17 billion, its market value is much higher than that of other competitors.

However, this market structure does not mean that there are no challenges and competitors. For example, API3 is positioned as a first-party oracle solution, emphasizing direct data feeds from data providers to the blockchain, aiming to reduce dependencies and potential failure points related to third-party oracles such as Chainlink. Provides greater advantages in terms of accuracy and latency.

In August 2020, nine Chainlink node operators were attacked. Since Chainlink nodes operate by responding to smart contract requests, obtaining and verifying real-world data, and then passing the data to the smart contract, this process requires the consumption of gas fees on Ethereum to pay for the execution of these operations.

The attacker launches the attack by sending a large number of seemingly valid price feed requests to Chainlink nodes, causing the node operator to suddenly face huge Ethereum Gas fees, and then Hedging Gas price fluctuations by minting $Chi as a Gas token developed by 1inch at the time. After minting, the attacker sold these tokens for $ETH, effectively draining the node wallet of $ETH and ultimately causing a loss of approximately 700 $ETH.

Although Chainlink took prompt remedial measures after this incident and continues to work hard to improve its protocol to improve network security and reliability. However, considering the great significance of oracles to the on-chain ecology, the risks related to oracles will be an important consideration that we cannot ignore for a long time. For example, Mango Markets and Bonq DAO also later suffered from oracle attacks. huge loss.

In fact, the attackers used the mechanism of third-party oracles to carry out these attacks. In contrast, first-party oracles bring a different solution.

Traditional third-party oracles are operated by third-party middlemen To host the oracle node, the intermediary needs to aggregate external data and feed it into the smart contract. This mechanism results in data consumers needing to trust not only the data provider, but also the intermediary, introducing an additional layer of trust and potential costs, and may raise user concerns about central points of failure, data manipulation risks, transparency, trust issues, etc. worries.

For example, in order to encourage third-party nodes to provide reliable services, third-party oracles usually require middleman costs (Middleman tax) to encourage honest behavior, and this The additional cost is non-existent in the first-party oracle model. In addition, at some level, the mechanism of third-party oracles may be considered not to be truly decentralized.

In contrast,API3, as a first-party oracle, allows API providers to operate oracle nodes by themselves, which improves the reliability of data. and integrity while providing a greater degree of decentralization and cost-effectiveness in a more secure manner.

When it comes to first-party oracles, we have to mention the Pyth Network protocol, which has been equally popular recently. Next, we will analyze API3 and Pyth Network through comparison.

It is easy to see that both projects have made important contributions to the Web3.0 ecosystem by solving the critical need for reliable, decentralized data sources. The main advantages of API3 include:Broader data application scope, fully decentralized DAO governance model, low operational difficulty, cost-effectiveness, high transparency, and a more powerful token economic model.

From these data, we can see that Pyth Network has greater advantages in terms of current integration depth and coverage. However, this does not mean that API3 lacks competitiveness. The current fewer integration protocols give API3 the opportunity to focus on providing high-quality services and delving deeply into the blockchains it serves. In the future, with the continuous development of blockchain technology and the increase in application scenarios, API3 can expand its market share by increasing integrated links, protocol support, and improving its value guarantee.

In addition, API3's current smaller market size may make it more flexible and able to quickly adapt to market changes and user needs, bringing greater potential for growth and expansion. space. In the future, we look forward to API3 continuing to enhance its position in the industry through innovation and optimization.

Therefore, we still have reasons to be optimistic about the development prospects of API3. Combined with the OEV Network introduced in the previous article,when the architecture of dAPI When combined with OEV Network and ZK-Rollup, and governed by a fully decentralized DAO, we can see that the future of API3 may not only be providing oracle services as an intermediate component, but may also become an on-chain The infrastructure developed by the ecosystem and dAPP projects even has the potential to subvert the market currently dominated by third-party oracles.

Although API3 has brought us strong expectations for its various advantages, any blockchain project faces a series of unique risks, and the main risks of API3 may include the following points:

Adoption: The future success of API3 will largely depend on the adoption of API providers and their integration with blockchain projects . If API3 fails to gain enough traction or adoption rates don’t meet expectations, this could negatively impact the success of the project and the value of its token.

Provider churn: If for any reason a large number of API providers cease their services or choose not to adopt API3, this may Limit the variety and quality of available data, potentially impacting the effectiveness of the API3 network.

Security Vulnerabilities: Like any blockchain project, API3 may be subject to potential security issues in its protocol, smart contracts, or the Airnode technology itself Impact of vulnerabilities. Any security breach or exploit could result in the loss of funds or data and erode user trust in the platform.

Competitive Landscape: Competition in the field of oracles is very fierce, and established players like Chainlink already have a considerable market share. The concept and design of API3 are very creative, but this does not guarantee the long-term success of the project, so API3 still needs to stand out and prove its value proposition to overcome competitive pressures.

Therefore, in addition to its innovative methods and mechanisms, the success of API3 will also depend on technical execution, market adoption, competitive differentiation, regulatory environment and other factors. As with all investments in the cryptocurrency space, we should thoroughly understand the advantages and risks involved in the project itself before making an investment decision.

Overall, API 3 brings us a pioneering approach in the oracle space, directly connecting data providers and blockchain networks through first-party oracles and dAPI, enhancing security security, transparency and efficiency, while reducing the risks associated with data tampering and the costs associated with data feeds.

Furthermore, API 3 has a well-designed and powerful token economic model that allows smart contract platforms to utilize dAPI to be truly decentralized through the DAO governance model. and build meaningful dAPPs in a trust-minimized manner.

Combined with the launch of its OEV Network, we have reason to expect that API 3 will be adopted by more blockchain networks and dAPP protocols in the future, and there will be opportunities Become an infrastructure for the ecological development of the chain and promote the development and innovation of decentralized applications.

Reference materials

[1]https:// tracker.api3.org/ 

[2]https://etherscan.io/token/0x0b38210ea11411557c13457D4dA7dC6ea731B88a 

[3]https://docs.api3.org/explore/ 

[4]https://www. theblock.co/post/76986/chainlink-nodes-attack-eth 

[5]https://www.wublock123.com/index.php? m=content&c=index&a=show&catid=47&id=23865 

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