The end of stablecoins? Why Terra cryptocurrency and LUNA token collapsed
About this publication
FinTolk publishes an analytical piece examining the Terra/LUNA collapse and its implications for the broader stablecoin ecosystem. The article investigates the algorithmic stablecoin model's fundamental flaws and what the failure means for the future of decentralized finance.
Dmitry Kotov's role
Dmitry Kotov provides expert commentary on the systemic risks of algorithmic stablecoins, demonstrating his deep understanding of DeFi mechanisms and his ability to identify structural vulnerabilities in crypto projects.
Background
Fintolk covers personal finance for Russian readers in plain language. This piece ran during the May 2022 collapse of TerraUSD, when roughly forty billion dollars of value disappeared over a few days.
UST was an algorithmic stablecoin: nothing was held in reserve, and the dollar peg was maintained by an arbitrage loop with a second token, LUNA, that could always be minted or burned against it. The design works while confidence holds and inverts the moment it does not — redemptions mint LUNA, the new supply drives its price down, and each further redemption mints more of it. The lesson generalises past crypto: a mechanism that depends on participants believing it will keep working is not a mechanism, it is a bank run with extra steps.
Dmitry Kotov's commentary
The Terra/LUNA collapse was not a black swan — it was a stress test that the algorithmic stablecoin model was always going to fail. When FinTolk asked me to break down what happened, I traced the failure to a fundamental design flaw: UST's peg relied on arbitrage incentives that only worked in normal market conditions. Once selling pressure exceeded the system's capacity to absorb it, the death spiral became inevitable. What concerned me most was how many retail investors treated UST as a savings account because of the 20% Anchor yield, without understanding that the yield itself was subsidized and unsustainable. The broader lesson for the stablecoin ecosystem is that algorithmic stability without overcollateralization is a solved problem — it doesn't work. The industry has since moved toward hybrid models and proof-of-reserves, which is the right direction.
Originally published on fintolk.pro in Russian.
Open original