Dai is a decentralized stablecoin that operates on the Ethereum blockchain and is maintained by the MakerDAO protocol. It was created to address the issue of price volatility commonly associated with cryptocurrencies like Bitcoin and Ethereum. It has a proven track record, is easy to use, and is widely trusted.

Right off the bat, I would recommend Dai as a preferred stablecoin, however it suffers from a flaw which must be addressed.

Dai

Dai is designed to maintain a stable value relative to a target price, typically one United States dollar (USD). It achieves this stability through a system of smart contracts and collateralization. Essentially, users lock up other cryptocurrencies, primarily Ether (ETH), as collateral, which enables them to generate Dai. The collateralization ratio ensures that there is always sufficient value backing the circulating supply of Dai.

The MakerDAO protocol, which governs the operation of Dai, utilizes a mechanism called the Collateralized Debt Position (CDP) to manage the creation and redemption of Dai. Users can create Dai by locking up their collateral in a CDP, and they can redeem Dai by returning the borrowed Dai and unlocking their collateral.

The decentralized nature of Dai and the MakerDAO protocol means that its stability is not reliant on a centralized authority, such as a traditional bank. This feature makes Dai an attractive option for those seeking stability in the volatile cryptocurrency market, and it has found utility in various applications, including decentralized finance (DeFi) platforms, remittances, and as a stable medium of exchange.

It's worth noting that while Dai aims to maintain a stable value, there can still be some fluctuations due to market conditions and the overall stability of the collateralized assets. However, the MakerDAO community continuously works to maintain stability and mitigate risks.

All of this is excellent, and provides what is seen as the best decentralized stablecoin available to the community. So, what is the problem?

Dai is largely backed by USDC, another stablecoin which suffers from certain risks and a spotty history. This requires a bit of explanation of what USDC is and why that matters.

USDC

The USDC stablecoin, also known as USD Coin, is a digital currency that aims to provide stability by being pegged to the value of the United States dollar (USD) on a one-to-one basis. It is an ERC-20 token built on the Ethereum blockchain, and its value is backed by reserves of USD held in bank accounts.

USDC is issued by Centre, a consortium founded by Circle and Coinbase, which is responsible for regulating and maintaining the stability of the stablecoin. The reserves of USD that back USDC are held in segregated accounts, subject to regular attestations and audits to ensure transparency and accountability.

One of the primary purposes of USDC is to facilitate fast and secure transactions on blockchain networks. It offers the advantages of blockchain technology, such as near-instant settlement and global accessibility, while aiming to maintain a stable value equivalent to one USD. This stability makes USDC useful for various applications, including remittances, peer-to-peer payments, decentralized finance (DeFi) platforms, and as a stable medium of exchange.

USDC can be obtained through various exchanges and platforms that support its trading and usage. Users can acquire USDC by depositing USD into participating platforms or by exchanging other cryptocurrencies for USDC.

It's important to note that USDC, like other stablecoins, is subject to certain risks and considerations. While it aims to maintain a stable value, there may be instances of slight fluctuations due to market conditions or changes in the backing reserves. Additionally, as with any digital asset, it's crucial to understand the risks associated with the platform or exchange you use to acquire or hold USDC.

If Circle chose to depeg USDC, or was forced to quit operations through regulation, Dai would suffer an immediate loss in value. As we have seen with the collapse of Silicon Valley Bank, these institutions can have real impact on their associated stablecoins. Even if a black swan event resulted only in a temporary loss of access to the underlying assets, that could spell disaster to many investors, and significantly undermines the purpose and benefit of a decentralized stablecoin.

Solution

Although this is a fairly big flaw with significant risk, the fix is easy and harmless. Dai must rebalance its holdings to diversify away from USDC. It's current portfolio does not have the appropriate range of assets to guard against a problem destabilizing USDC. Inclusion of other stablecoins, or varied assets, would insulate price fluctuations. Indeed, it is not clear to me why MakerDao has let this happen without consideration or open discussion.