On November 15th at Block 1573819200, Bitcoin Cash will receive another upgrade and reach a milestone. This update is part of the Bitcoin Cash Roadmap. All users have been provided with a test network within the last 3 months to check all changes in advance. The next upgrade is scheduled for May 15, 2020.
Although Schnorr signatures were implemented some time ago, they could only be used with CHECKSIG and OP_CHECKDATASIG. The new update enables the support of OP_CHECKMULTISIG and the use of Schnorr signatures in all signature verification processes.
Network users were encouraged to update their node software to the latest version, version 0.20.0 or higher. If users do not comply with this request, the systems will no longer be compatible with the Bitcoin Cash network.
Author : Collin Brown