Why does it sometimes take a week to withdraw coins from Layer 2 back to mainnet?
My understanding: Layer 2 is cheap because many transactions are bundled together and written back to mainnet, with the mainnet costs shared among many users.
Optimistic Rollups assume submitted results are correct by default, but have a challenge period. Withdrawing to mainnet through the native cross-chain bridge usually takes around 7 days.
What I do: Before withdrawing assets from Layer 2 to mainnet, I check whether I’m using the official bridge or a third-party cross-chain bridge, since transfer times and risks differ.
$ARB and $OP are the governance tokens for Arbitrum and Optimism, respectively.
#ARB
My understanding: Layer 2 is cheap because many transactions are bundled together and written back to mainnet, with the mainnet costs shared among many users.
Optimistic Rollups assume submitted results are correct by default, but have a challenge period. Withdrawing to mainnet through the native cross-chain bridge usually takes around 7 days.
What I do: Before withdrawing assets from Layer 2 to mainnet, I check whether I’m using the official bridge or a third-party cross-chain bridge, since transfer times and risks differ.
$ARB and $OP are the governance tokens for Arbitrum and Optimism, respectively.
#ARB