HTX to Support the Ontology（ONT）Network Upgrade

Dear HTX Users,

HTX will support the Ontology（ONT）Network Upgrade with the following plan:

HTX will suspend the deposit and withdrawal services for ONT at 22:00:00 (UTC) on December 2, 2025.

You may deposit ONT in advance. We will handle all technical requirements involved for all users .

Please note:

● The Ontology（ONT）Network Upgrade will take place at 00:00:00 (UTC) on December 3, 2025;

● The trading of ONT will not be affected during the network upgrade .

● The network upgrade will not result in creation of new tokens.

● HTX will resume deposit and withdrawal for ONT once we deem the upgraded network to be stable, which will not be further announced.

For more information on the network upgrade, please refer to the following:

https://ont.io/news/ontology-mainnet-upgrade-announcement/

HTX

November 28, 2025

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HTX reserves the right in its sole discretion to amend or change or cancel this announcement at any time and for any reasons without prior notice. The above is for information purposes only and HTX makes no recommendations or guarantees in respect of any virtual asset, product, or promotion on HTX. Prices of virtual assets are highly volatile and trading virtual assets involves risk. Please read our Risk Reminder text here.