Let's discuss stablecoins with a spotlight on TerraUSD, allegedly pegged to a US dollar.

Stablecoin TerraUSD chart courtesy of CoinMarketCap
TerraUSD Not Exactly Stable
Stablecoins are pegged to something, typically $1 but it could be anything. TerraUSD was supposed to be pegged to the US dollar.
$1 = 1 TerraUSD.
That peg broke hard on Monday.
Many readers may be wondering what TerraUSD is backed by.
The answer is nothing. Officially, it's backed an algorithm that clearly doesn't work.
Faith Based Algorithm
The algorithm is based on faith and arbitrage. If the price of TerraUSD falls below $1, traders can “burn” the coin in exchange for $1 worth of new units of a cryptocurrency called Luna.
In theory, if either Luna or TerraUSD deviates too far traders will burn one in exchange for the other.
Also in theory TerraUSD's monetary policy scales nearly without limits, thereby helping DeFi (decentralized finance) projects reach their full potential.
Finally, users can gain passive income using TerraUSD with the Anchor protocol's stable interest rates. Anchor is a lending protocol that promises a 20% return on UST savings. Additional and steady income appears through rewards in PoS chains, which maintain their stability due to commissions and inflation. This nuance will make it possible to form a reliable interest rate.
20% interest. What can possibly go wrong with that?
Theory vs Practice
The chart above shows the difference between theory and practice.
The comments on CoinMarketCap are more than a bit amusing.
- Relax. the algorithm will catch up with the market. your money is safe
- Buy UST with any other stable and take a profit from the difference tomorrow everything will be 1:1
- $LUNA wow! never expected $UST to do this, Terra luna going down HARD! still when the bear market is over everything will work itself out & I really think this will be the project that will come out on top and be in the top 5.
- $UST arbitrage opportunity of a life time. imagine buying the dollar at a 20 percent discount
Here's one comment that actually made sense: "Which idiot thought that stablecoins backed by anything other than USD was a good idea?"
Emergency Loan
Please note Terra Stablecoin Peg Slips Below $0.70—Despite Loan From Bitcoin Reserves
Terra's UST, the third-largest stablecoin by market cap, dropped to $0.69 in Monday trading, an all-time low according to CoinMarketCap data, even after the Terra-supporting Luna Foundation Guard rushed a $1.5 billion loan to shore up the currency. On Coinbase, the listed price got as low as $0.65.
Luna Foundation Guard (LFG), co-founded by Terra co-creator Do Kwon, wasn't so certain that [the algorithm] would work, given the larger crypto market meltdown that's been taking place over the last five days, which has seen the crypto market cap swing from $1.8 trillion to $1.4 trillion.
So, over the weekend it decided to make use of a backstop strategy it's been pursuing over the past few months. As of May 3, LFG had stockpiled nearly $4 billion worth of Bitcoin, Avalanche, UST, and LUNA for its reserves that it could fall back on in case the algorithm stopped working.
As the stablecoin's price peg slipped to $0.985 this weekend, it voted to lend out $750 million in Bitcoin and $750 million in UST to "proactively defend the stability of the $UST peg & broader Terra economy, especially under volatility and the uncertainty of macro conditions in legacy markets."
The whole point of maintaining a reserve of Bitcoin and other cryptocurrencies was for precisely this moment.
Reserve? What Reserve?
This has me shaking my head.
How is a loan supposed to shore up an algorithm?
Doesn't the loan have to be paid back?
Steady Lads
Deploying more capital - steady lads
— Do Kwon 🌕 (@stablekwon) May 9, 2022
Terra co-creator Do Kwon says "Steady lads, deploying more capital."
Deploying more capital - steady lads
— Do Kwon 🌕 (@stablekwon) May 9, 2022
Explaining 20% Interest Payments
It's worth noting you can always redeem 1 $UST for $1 worth of $LUNA, even if $UST is worth <$1.
— jonwu.eth (@jonwu_) May 9, 2022
It's meant to be a stabilizing mechanism:
If $UST is trading at $0.99, arbitrageurs can buy it and redeem it for $1 of $LUNA.
Abracadabra
Two obvious questions:
— jonwu.eth (@jonwu_) May 9, 2022
1) if something is paying you 20% risk-free, why not just borrow a ton of money and make it pay you like, 100%+?
Oh uhm, that's exactly what Abracadabra / $MIM's degenbox did:https://t.co/2MUoAvjFiI
Frog Nation DeFi
2) How does one give out 20% in free money every year?
— jonwu.eth (@jonwu_) May 9, 2022
Well that's also easy, the LFG (Luna Foundation Guard), overseers of Terra's multi-billion dollar ecosystem fund.
We'll come back to that.
Big MF Problem
That's kind of why the $LUNA mcap < the $UST mcap is FUD.
— jonwu.eth (@jonwu_) May 9, 2022
It doesn't matter what the total implied value of $LUNA is.
What matters is the marginal value of each $LUNA that is redeemed for $UST, or vice versa, aka $LUNA's price.https://t.co/29oAXB98s5
Nut Size
So suddenly--again, for no good reason at all--there's a shit-ton more $LUNA in circulation being dumped on the open market.
— jonwu.eth (@jonwu_) May 9, 2022
This is--in essence--what's happening today.
Why Sell?
Why would anyone sell $UST at 0.85?
— Zilto$3 (@mr_deeds7) May 9, 2022




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