Reorg Risks

Reorganization risks occur when a blockchain or rollup replaces a previously accepted sequence of transactions with a new one. This typically happens due to network latency, consensus failures, or malicious attacks.

In the context of rollups, a reorg on the Layer 1 can cause a corresponding reorg on the L2, leading to the invalidation of previously confirmed trades. This is a severe risk for derivatives traders, as it could result in unintended liquidations or loss of collateral.

Protocols must implement robust handling for these scenarios, often by waiting for sufficient L1 confirmations before finalizing L2 state. Understanding reorg risk is a critical part of systemic risk assessment for any financial application built on blockchain.

It highlights the importance of deep liquidity and cautious margin management. Risk models must account for the probability of reorgs when determining collateral requirements.