Blast bridge UI deadline passes with $40M still to withdraw
Blast's standard withdrawal interface has hit its deadline with about $40M left in the bridge. Funds can still leave via contracts: prove, wait a day, finalize.
CryptoGroup Newsroom · · 3 min read
Blast, the Ethereum layer-2 network known for paying native yield, has reached the deadline for its standard withdrawal interface with roughly $40 million still locked in its bridge, The Defiant reports. The money is not lost: the bridge contracts keep working, but leaving now takes more technical steps.
What changed
- The deadline applies to the simple website interface most people used to move ETH and stablecoins back to Ethereum.
- Blast has published contract-level exit guides for anyone who missed it, aimed largely at exchanges, custodians and multisig wallets that hold funds in smart contracts.
- About $40 million was still in the bridge at the cutoff, according to The Defiant.
How a contract-level withdrawal works
Blast is built on the OP Stack, so a withdrawal follows the same pattern as other optimistic rollups. According to Blast's developer documentation:
- Initiate on Blast. The wallet or contract holding the funds calls the L2 bridge contract.
- Wait to prove. It can take up to about an hour before the Blast state containing the withdrawal is posted to Ethereum.
- Prove on Ethereum. A proof transaction is sent to the OptimismPortal contract.
- Wait out the challenge period. One day must pass so that invalid withdrawals can be disputed.
- Finalize on Ethereum. The funds are released on mainnet.
USDB has an extra step. Blast's dollar token is backed by DAI held on Ethereum, so finalizing a USDB withdrawal creates a request in Blast's USD withdrawal queue. After up to one more day, the recipient must call claimWithdrawal on the USDYieldManager contract to receive DAI. The docs also warn users to double-check the Ethereum recipient address, because a multisig that does not yet exist on mainnet must later be deployed with exactly the same settings to reach the funds.
Why it matters
Closing a front end is a reminder that a bridge is software you depend on twice: to get in and to get out. Our guides to crypto bridges and layer 2 networks explain why exits from optimistic rollups take time and why users depend on the operator's tooling. Anyone without the skills to call contracts directly should be wary of strangers offering "recovery" help: never share a seed phrase, a common trick covered in our crypto scam checklist.
Frequently asked questions
Are funds left on Blast lost after the deadline?
No. The deadline applies to the standard website interface. Funds can still be withdrawn by calling the bridge contracts directly, following Blast's exit guides.
How long does a Blast withdrawal take now?
Roughly an hour until the withdrawal can be proved, a one-day challenge period, then finalization. USDB adds up to one more day in a queue before the DAI can be claimed.
Why does USDB come out as DAI?
USDB is backed by DAI held on Ethereum, so withdrawing it pays out DAI through Blast's USD withdrawal queue.
This article is for information only and is not financial advice. Crypto assets are volatile; do your own research. Read our disclaimer
More from Ethereum
View all →Read next
What is the crypto Travel Rule? Thresholds and wallets
The crypto Travel Rule makes exchanges share sender and recipient details on transfers. How it works, EU, UK and US thresholds, and what it means for your wallet.
Securitize's tokenized stock halves as Circle takes the lead
Tokenized Securitize (SECZ) shares fell from $430.4M to $208.6M in under a month, while Circle-linked tokens rose to $383.6M in a $3.3B tokenized stock market.
Foundation hit by phishing sent from its own domains
Fake 'recall' emails from Foundation's real domains urged Passport owners to a seed-stealing site. Foundation blames leaked Cloudflare API keys; devices are safe.