Believe it or not, DeFi has a transparency problem. Transparency is one of the cornerstones of decentralized finance, but radical transparency also comes with unintended costs. While it may be fine for pseudonymous retail users, it creates strategic friction for capital allocators, institutional players, and protocol builders. There is such a thing as too much transparency. Even beyond privacy concerns, DeFi’s current default to pseudonymous transactions is not the right infrastructure for many of these participants.……..Continue reading….
By: Rob Viglione
Source: Crypto News
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Critics:
Because traders on a decentralized exchange often do not need to transfer their assets to the exchange before executing a trade, decentralized exchanges reduce the risk of theft from hacking of exchanges, but liquidity providers do need to transfer tokens to the decentralized exchange. Decentralized exchanges are also more anonymous than exchanges that implement know your customer (KYC) requirements.
As of 2018, there were signs that decentralized exchanges had been suffering from low trading volumes and reduced market liquidity. The 0x project, a protocol for building decentralized exchanges with interchangeable liquidity, attempted to solve this issue.
Due to a lack of KYC processes, and no way to revert a transaction, users are at a loss if they are ever hacked for their passwords or private keys. Additionally, liquidity providers staking in DeFi protocols can suffer what is called an impermanent loss if, when withdrawn, the token pairs they have invested in have altered in value ratio significantly.
Although liquidity pool DEX are the most widely used, they may have some drawbacks. The most common problems of liquidity pool DEXes are market price impact, slippage, and front running. Price impact occurs because of the AMM (Automated Market Makers) nature itself — the larger the deal, the stronger impact it has on the price.
For example, if the constant product AMM is in use, every deal must keep the product xy = k constant, where x and y are quantities of two cryptocurrencies (or tokens) in the pool. Price impact is non-linear, so the larger is the input amount Δx, the lower is the final ratio y / x that gives an exchange price. The problem is mostly significant for relatively large deals versus the liquidity pool size.
Front running is a special type of attack in public blockchains when some participant (usually a miner) seeing an upcoming trading transaction puts his own transaction ahead (playing with a transaction fee for example), making the initial transaction less profitable or even reverted. To provide some protection against front running attacks, many DeFi exchanges offer a slippage tolerance option for end-users.
This option serves as a safeguard, allowing users to set a limit on the worst acceptable price they are willing to accept from the time of transaction signing. A decentralized exchange can still have centralized components, whereby some control of the exchange is still in the hands of a central authority. The governance of a DeFi platform, typically as part of a Decentralized Autonomous Organization, is done through tokens that grant voting rights and are distributed amongst participants.
However, the majority of these tokens are often held by few individuals and are rarely used to vote.In July 2018, the decentralized exchange Bancor was reportedly hacked and suffered a loss of $13.5M in assets before freezing funds. In a Tweet, Charlie Lee, the creator of Litecoin spoke out and claimed an exchange cannot be decentralized if it can lose or freeze customer funds.
Operators of decentralized exchanges can face legal consequences from government regulators. One example is the founder of EtherDelta, who in November 2018 settled charges with the U.S. Securities and Exchange Commission over operating an unregistered securities exchange. Coding errors and hacks are common in DeFi. Blockchain transactions are irreversible, which means that an incorrect or fraudulent DeFi transaction cannot be corrected easily.
The person or entity behind a DeFi protocol may be unknown and may disappear with investors’ money. Investor Michael Novogratz has described some DeFi protocols as “Ponzi-like”. DeFi has been compared to the initial coin offering craze of 2017, part of a cryptocurrency bubble. Inexperienced investors are at particular risk of losing money because of the sophistication required to interact with DeFi platforms and the lack of any intermediary with customer support. On the other hand, as the code for DeFi smart contracts is generally
open-source software that can be copied to set up competing platforms, experienced users and user-created bots might create instabilities as funds shift between platforms which share the same code. In addition, DeFi platforms might inadvertently provide incentives for cryptocurrency miners to destabilize the system. In 2021, half of cryptocurrency crime was related to DeFi. This rise has been attributed to a combination of developer incompetence and non-existent or poorly enforced regulations.
Theft from DeFi can come from either external hackers stealing from vulnerable projects, or “rug pulls”, where the developers and influencers promote a project and then take the money, as a form of pump-and-dump. In October 2021, the FATF included DeFi in the guidance for crypto service providers, making the authority’s aim to regulate this type of asset.They are expecting each individual country to determine if individuals involved in DeFi can be considered a virtual asset provider and be subjected to the FATF’s guidelines.
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