Ethereum Layer-2 project MegaETH has announced it will refund over $400 million raised through its Pre-Deposit Bridge after a series of missteps unraveled its planned launch of the native stablecoin USDm.
Key Takeaways
- MegaETH will refund all USDm pre-deposits following operational and technical failures.
- A misconfigured multisig transaction triggered an early reopening of the bridge, pushing deposits past $400 million.
- KYC issues and contract errors disrupted the process, causing confusion and unfair advantages for some users.
- Refunds are pending a smart-contract audit, with a redesigned USDC to USDm bridge set to launch before the Frontier mainnet beta.
What Happened?
MegaETH’s pre-deposit event, designed to preload liquidity for its upcoming stablecoin USDm, ended in a complete reversal after the team admitted to a flawed rollout. The event was supposed to collect up to $250 million initially, but an array of issues led deposits to surge past $400 million. The team has pledged full refunds to all participants.
We’ve decided to return all funds raised from the Pre-Deposit Bridge.
— MegaETH (@megaeth) November 27, 2025
Execution was sloppy and expectations weren’t aligned with our goal of preloading collateral to guarantee 1:1 USDm conversion at mainnet.
How this decision impacts you:
MegaETH’s Pre-Deposit Plan Goes Off the Rails
MegaETH opened the USDm pre-deposit bridge with a $250 million cap, aiming to preload collateral to ensure 1:1 conversion of USDC to USDm at mainnet launch. However, problems emerged from the start:
- A technical outage at a third-party bridge provider made the service inaccessible for about an hour.
- An incorrect SaleUUID in the contract caused transaction failures, requiring a 4-of-6 multisig fix.
- The KYC provider, Sonar, applied a strict rate limit that blocked large volumes of traffic, excluding many users.
Once deposits resumed, the cap was quickly filled. The team then tried to raise the limit to $1 billion. But things took another turn.
Misconfigured Multisig Triggers Early Reopening
While raising the cap, MegaETH misconfigured a critical multisig transaction. Instead of the usual 3-of-4 approvals, the contract required all four. Once those signatures were collected, the transaction became executable by anyone. An external party executed it 34 minutes before the bridge was meant to reopen, allowing deposits to resume early and rocket past $400 million.
MegaETH tried to contain the situation:
- First by capping deposits at $400 million.
- Then raising it to $500 million.
- Eventually abandoning plans to reach $1 billion altogether.
Despite these efforts, the damage was done. Users who were constantly refreshing the page got in early, while others relying on official updates were locked out.
Full Refunds Promised, But Roadmap Pressure Builds
MegaETH admitted to “sloppy execution” and poor alignment between internal goals and public expectations. The team emphasized that no funds were ever at risk, but acknowledged that the process was chaotic and unfair.
A new refund contract is currently undergoing an audit, and repayments will begin once that is complete. While exact timing was not disclosed, the refund process is expected to begin shortly after the audit’s conclusion.
Going forward, MegaETH says it will relaunch the USDC to USDm bridge under tighter operational control before its Frontier mainnet beta, which will serve as the platform’s trial phase.
MegaETH’s Bigger Vision Remains
Despite the refund debacle, MegaETH continues to pitch its Layer-2 as a high-performance alternative to Ethereum:
- Up to 100,000 transactions per second
- Sub-millisecond latency
- Fees below $0.01
It uses a proof-of-stake model and plans to reward stakers via a performance-based system. MEGA token holders will also participate in governance through a decentralized autonomous organization (DAO), with both DAO and staking features expected to roll out 12 to 18 months after mainnet launch.
CoinLaw’s Takeaway
Honestly, I think MegaETH made the right call by deciding to refund everything. In my experience, most projects would’ve tried to spin this or sweep it under the rug. But MegaETH took accountability and is making users whole, which says a lot. That said, this was a messy launch. It raises valid concerns about whether the team is ready for primetime. Still, if they learn from this and tighten up their processes, the upcoming Frontier mainnet could be their chance to regain trust.
