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A Survey of Decentralized Finance(DeFi) based on Blockchain

  • 투고 : 2020.12.22
  • 심사 : 2021.01.28
  • 발행 : 2021.03.31

초록

블록체인 기술은 2008년 나카모토 사토시라는 신원미상의 인물이 비트코인이라는 암호화폐를 제안하면서 시작되었다. 나카모토 사토시는 기존의 금융 시스템에 대한 불신을 가지고 있었고 은행과 같은 중개자 없이도 해킹이나 변조에 견고한 금융시스템을 블록체인 기술을 통해 구현하고자 했다. 사토시는 비트코인의 생성과, 거래의 위조를 방지하기 위한 기술로 블록체인을 제안하였고 이를 통해 화폐의 발행과 거래, 그리고 검증의 기능을 구현하였다. 이후 스마트 계약을 블록체인 상에서 구현할 수 있는 암호화폐인 이더리움이 개발되면서 예금, 대출, 보험, 파생상품 등 복잡한 계약이 필요한 금융상품을 암호화폐의 영역으로 끌어들일 수 있게 되었다. 또한 실물자산과 결합을 통해 금융 기관이 제공했던 상품을 대체할 수 있는 가능성도 확대해 나가고 있다. 이러한 애플리케이션들을 Decentralized Finance(DeFi)라고 정의한다. 본 논문은 전반적인 DeFi의 기술적 이해와 현재 운영되고 있는 어플리케이션의 소개를 위하여 작성되었다. 먼저 전반적인 DeFi를 구현하는 기술들과 생태계에 대해서 설명한 후 대표적인 DeFi 애플리케이션들을 특징별로 분류하여 설명한다.

Blockchain technology began in 2008 when an unidentified person named Satoshi Nakamoto proposed a cryptocurrency called Bitcoin. Satoshi Nakamoto had distrust of the existing financial system and wanted to implement a financial system that is robust against hacking or mannipulation without a middleman such as a bank through blockchain technology. Satoshi proposed a blockchain as a technology to prevent the creation of the bitcoin and forging of transactions, and through this, the functions of issuance, transaction, and verification of currency were implemented. Since then, Ethereum, a cryptocurrency that can implement the smart contract on the blockchain, has been developed, allowing financial products that require complex contracts such as deposits, loans, insurance, and derivatives to be brought into the area of cryptocurrency. In addition, it is expanding the possibility of substituting products provided by financial institutions through combination with real assets. These applications are defined as Decentralized Finance (DeFi). This paper was prepared to understand the overall technical understanding of DeFi and to introduce the services currently in operation. First, the technologies and ecosystems that implement the overall DeFi are explained, and then the representative DeFi services are categorized by feature and described.

키워드

참고문헌

  1. Nakamoto, Satoshi. "Bitcoin: A peer-to-peer electronic cash system," https://bitcoin.org/bitcoin.pdf
  2. Buterin, Vitalik. "A Next-Generation Smart Contract and Decentralized Application Platform-Ethereum Whitepaper", 2014. https://github.com/ethereum/wiki/wiki/White-Paper
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  8. Tron, https://tron.network
  9. EOS. https://eos.io
  10. Tether, https://tether.to/
  11. Binance USD, https://www.binance.com/en/busd
  12. USD Coin, https://www.centre.io/usdc
  13. TrueUSD, TrueGold, https://www.trusttoken.com/
  14. MakeerDAO, DAI, http://www.makerdao.com/
  15. bitUSD, http://bit.ly/BitShares_USD
  16. TerraUSD, TeraKRW, https://terra.money/
  17. Synthetix, sUSD, https://www.synthetix.io/
  18. Paxos Gold, https://www.paxos.com/paxgold/
  19. Uniswap, https://uniswap.org/
  20. 1inch exchange, https://1inch.exchange/
  21. Balancer, https://balancer.finance/
  22. Matcha, https://matcha.xyz/
  23. DEX.AG, https://dex.ag
  24. Wrapped BTC, https://wbtc.network/
  25. Compound, https://compound.finance/
  26. QTUM, https://qtum.org/
  27. Aave, https://aave.com/
  28. Sushiswap, https://sushiswap.org/
  29. Curve Finance, https://www.curve.fi/
  30. yearn.finance, https://yearn.finance/
  31. Harvest Finance, https://harvest.finance/
  32. yinsure.finance, https://yinsure.finance/