Balance Coin, the algorithmic stablecoin tied to 42DAO, lost its dollar peg and nearly all of its value after a brief oracle malfunction enabled an attack that drained roughly $912,000 from the protocol. BLC fell about 99.8% to roughly $0.0013, according to the source report.
How the collapse unfolded
The incident was linked to an oracle failure that lasted only seconds but was enough to create an opening for a targeted exploit. Analysts cited in the source said the attack was carried out in a single transaction and centered on weaknesses across two smart contracts used by the protocol.
The source report says the protocol relied on a common DeFi design, but without key safeguards that could have blocked or slowed the reaction to faulty market data. That left the system vulnerable once the pricing feed briefly delivered an abnormal value.
Two contracts at the center of the exploit
According to the reconstruction described in the report, the first weak point was a pricing module identified as HOT. It reportedly accepted an unusually low Bitcoin price from the BTCB oracle without applying protective filters.
The second vulnerable component was a liquidation module called Dog. Analysts said it responded immediately to the understated price, with no delay or verification step that might have caught the bad data before the system acted on it.
That combination appears to have allowed the attacker to manipulate the protocol’s internal logic fast enough to extract funds before the erroneous price input could be corrected.
Liquidity wiped out on PancakeSwap
After obtaining the proceeds, the attacker reportedly sold millions of newly minted BLC tokens on PancakeSwap. The sale overwhelmed available liquidity and pushed the token price close to zero, turning a protocol exploit into a full market collapse for the stablecoin.
The damage extended beyond the token’s price. The report says 42DAO was left holding significant bad debt following the transaction, adding a balance-sheet problem to the immediate trading shock.
No recovery plan announced
As of the source article’s publication, no recovery or compensation plan had been announced. The report presents the event as an example of how adopting a well-known decentralized finance structure without preserving the original oracle protections can expose a protocol to severe losses.
The episode also highlights how even a momentary failure in pricing infrastructure can cascade through automated systems when contracts are designed to act instantly and without checks.
Source: u.today