What happened
Decentralized trading platform Extended has initiated a critical infrastructure migration from the Starknet Layer-2 network to a new solution called Arc. In this context, users holding balances exceeding $1 in assets such as USDT (Tether) or wBTC (Wrapped Bitcoin within their sub-accounts have been notified to either convert or withdraw their funds to prevent forced position closures.
A significant issue reported by the community and The Defiant is the presence of conflicting communication. While some notifications pointed to October 22 as the settlement deadline, other interface messages within the platform suggested different dates. This inconsistency places undue pressure on users, who risk having their assets automatically managed by the protocol under potentially unfavorable conditions if they fail to act promptly.
Technology context
The migration involves moving from Starknet, a ZK-Rollup (Zero-Knowledge Rollup) built on Ethereum, to Arc. Starknet is renowned for its use of the Cairo programming language and its ability to scale Ethereum by processing transactions off-chain, subsequently sending a validity proof back to the Mainnet.
Arc represents the next stage of Extended's infrastructure, designed to enhance capital efficiency and user experience. However, such technical transitions between networks or protocol versions (often termed "v2 to v3" migrations) necessitate the "draining" of old smart contracts. Because assets are locked in contracts specific to the Starknet network, they cannot be simply "teleported" to Arc without user intervention or a formal settlement procedure.
Why it matters
This situation highlights one of the major risks in the DeFi ecosystem: reliance on interface and communication. When a protocol decides to change its underlying infrastructure, users become vulnerable to communication lapses. If a user fails to withdraw assets before the "settlement" period, the platform may execute a forced closure, converting assets into stablecoins or liquidating them at the prevailing market price, which can lead to losses through slippage or unforeseen fees.
Furthermore, the incident underscores the complexity of using Layer-2 solutions. While they offer low fees, migrating between them or moving to newer versions remains a manual and often cumbersome process for the average user.
Key terms explained
- ZK-Rollup (Zero-Knowledge Rollup): A Layer-2 technology that executes transactions outside the Ethereum network and uses complex mathematical proofs to demonstrate their validity without revealing the underlying data.
- Settlement: The final process through which transactions or open positions are closed, and net balances are transferred between parties.
- Wrapped Bitcoin (wBTC): A tokenized version of Bitcoin that runs on the Ethereum network (or L2s), maintaining a 1:1 peg with BTC's value.
- Sub-account: A secondary account structure within a trading platform that allows for the separation of strategies or assets.
Impact
- Short-term: Extended users must immediately verify their balances and decide whether to manually migrate to Arc or withdraw funds to cold storage. Deadline confusion is likely to result in an influx of support tickets and community frustration.
- Medium-term: The success of the Arc migration will determine if Extended can retain the liquidity it built on Starknet. Communication mishaps may negatively impact long-term trust in the development team's governance and professionalism.
What's next
We expect Extended to issue a clarified official settlement schedule to prevent massive user losses. In the blockchain industry, the trend is moving toward "seamless" migrations; however, until these become standardized, users will continue to bear the responsibility of constantly monitoring official channels like Discord or X (Twitter) for critical updates.
Sources
- The Defiant: Extended Plans Oct. 22 Settlement Move From Starknet to Arc
- Starknet Technical Documentation
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Educational analysis generated with AI and editorially reviewed.