Twice a year, the Bitcoin Cash (BCH) network hard forks as part of scheduled protocol upgrades. The next BCH hard fork is scheduled for Nov 15, 2018, and Coinbase is prepared to support the published roadmap from bitcoincash.org.
However, unlike previous BCH hard forks, there is a competing proposal that is not compatible with this published roadmap. Coinbase will monitor the hard fork process and work to minimize customer disruption until the network meets Coinbase security standards. We will pause sends and receives on the BCH wallets at Coinbase.com, in our iOS and Android apps, and at Coinbase Pro, Prime, and Custody beginning at 8:00AM PST on 11/15/2018 (approximately 1 hour before the fork). Please be sure all BCH sends and receives are completed prior to that time. During the pause, your BCH will remain safely at Coinbase.
We will monitor the Bitcoin Cash network during the upgrade. Coinbase cannot predict the duration of this upgrade process. When the upgrade is complete, we will evaluate the network and take appropriate next steps, including re-enabling sends and receives. We will update our customers throughout the upgrade process and about the outcome of the fork once the network reaches consensus. In the unlikely event that multiple viable chains persist after the fork, Coinbase will ensure that customers have access to their funds on each chain.
For more information, please visit What to Expect During the Bitcoin Cash Hard Fork page.