The new stablecoin protocol Usual reported today that the exchange rate of its stable pledge product USD0++ has significantly decoupled, which once attracted widespread attention in the community. It is understood that the cause of the matter is that the usual team modified the official document this morning and changed the exchange rate bottom line of USD0++ to USD0 from the original 1:1 to 1:0.87, which in turn led to a serious decoupling of USD0++. (Preliminary summary: USUAL’s price on Binance “bounced the trend and soared by 25%” at the opening of the market. How powerful can it withstand the Fed’s airdrop? ) (Background supplement: $USUAL is listed on Binance’s new coin mining Launchpool, pre-market market , what is the decentralized stablecoin protocol Usual? ) Usual, a stablecoin protocol that has rapidly emerged in the DeFi market with innovative concepts, reported today (10th) that its stablecoin pledge product USD0++ has experienced a significant decoupling, causing a stir in the community. There has been widespread discussion, but what exactly happened behind this? Usual suddenly changed USD0++ related files. If we take a closer look at the cause of the entire decoupling incident, it comes from a document that was officially modified early this morning. Writing about the USD0++ floor price in the document: The price floor reflects the earnings the DAO is expected to receive before USD0++ expires. This price is calculated based on Fed rates and interpolated between available rates for accuracy. Currently, the price floor is set manually (e.g., 0.87 USD0 for each USD0++), but in the future it will evolve into an automated on-chain process that integrates dynamic interest rate data through oracles such as Chainlink or Redstone. As time progresses, the price floor will gradually approach 1, aligned with the agreement expiration date. This mechanism protects the value of USUAL and ensures that the earnings of USD0++ remain stable, rewarding long-term participating ecosystem users while providing liquidity options for others. In the official document that was modified without authorization, the price bottom line of USD0++ was lowered from 1 USD0 to 0.87 USD0. Although the article stated that the exchange would gradually approach 1:1 in the future, it still caused panic and accusations from community users. Social KOL @Cbb0fe tweeted, accusing Usual of operating like this: Oh my god, the Usual team updated the document about USD0++ 6 hours ago, which is basically a fraud. In addition, social KOL @OlimpioCrypto also said that the team will exchange The ratio is reduced to 0.87, which directly caused 13% of USD0++ with a market value of 1.5 billion to disappear instantly: they allowed users to mint/purchase USD0++ for 1 USD (no discount, 1:1 design), and then suddenly implemented a new 0.87 floor price, effectively locking (or saying (evaporated) 13% of the principal, involving funds of up to 1.5 billion U.S. dollars. User runs caused the Curve pool to tilt significantly. Curve’s USD0++/USD0 pool with a TVL of 245 million U.S. dollars also experienced crazy runs from users after the news came out. According to Curve data, the pool ratio has been severely tilted, with the USD++ ratio currently reaching 91.82%; USD0 is 8.18%. The current exchange rate of USD0++ touched as low as 0.9 USD0 at 1 p.m., and rebounded afterwards, now trading at 0.9532 USD0. As for the price of USD0, it was not affected and is still pegged to the US dollar price at 1:1; however, what is interesting is that the usual governance token USUAl was not greatly affected, falling only 0.1% in the past 24 hours. Related reports: A Chinese youth used Binance to "disguise exchange" USDT and RMB and was sentenced to five years in prison. Is it illegal to accept USDT in MetaMask? The Central Bank of Brazil plans to ban the withdrawal of stablecoins to self-hosted wallets. Circle has reached a strategic partnership with Binance to promote the popularity of USDC and cryptocurrencies globally. "Usual raided and lowered the exchange rate, causing the "USD0++ decoupling" pin to US$0.9, the Curve pool was seriously tilted, and the community : Fundamental fraud. This article was first published on BlockTempo (Dong District Dongzhu - the most influential blockchain news media).