Withdrawal Delay

Withdrawals on Arbitrum Nitro chains are subject to a 7-day validation period. This is to provide observers of the roll-up protocol sufficient time to challenge an invalid block.

From the Arbitrum docs:

Arbitrum is optimistic, which means that Arbitrum advances the state of its chain by letting any party (a “validator”) post on Layer 1 a rollup block that that party claims is correct, and then giving everyone else a chance to challenge that claim. If the challenge period (roughly a week) passes and nobody has challenged the claimed rollup block, Arbitrum confirms the rollup block as correct.

To bypass this withdrawal period, XR One users may exit the chain via one of our official third-party bridge providers.