About Layer 2 networks:
Optimistic Rollups assume transactions are valid by default, while allowing a challenge period. Withdrawing to the mainnet via the native bridge usually takes around 7 days.
Layer 2 is cheaper because it batches a large number of transactions and submits them to the mainnet, allowing many users to share the mainnet fees.
$ARB 0.1801（-8.9%）
#ARB
Optimistic Rollups assume transactions are valid by default, while allowing a challenge period. Withdrawing to the mainnet via the native bridge usually takes around 7 days.
Layer 2 is cheaper because it batches a large number of transactions and submits them to the mainnet, allowing many users to share the mainnet fees.
$ARB 0.1801（-8.9%）
#ARB