Dear OSL HK Client,

To further boost market liquidity and optimize the trading experience, OSL HK will roll out the Multi-Chain Unified Asset Upgrade between 07:00 – 08:00 (UTC+8) on 12 May 2026.

Following on from this upgrade, users will be able to merge all multi-chain assets into unified balances and suspend trading, cancel orders, and delist all pairs that use assets previously shown with their chain code (such as USDTTRC and USDTSOL).

I. Core Changes

• Asset Consolidation

Assets that were previously separated by chain (USDTTRC and USDTSOL) can be merged into a single unified USDT balance. The same applies to other multi-chain assets like USDC.

• Trading Pair Delisting

All trading pairs with their chain code will be delisted. Their liquidity will automatically move to the main trading pairs (e.g. BTC/USDT).

• Assets with their chain code

Your account will still show separate balances for USDTTRC, USDTSOL and other assets with their chain code. Starting from 07:00 (UTC+8) on 12 May 2026, the platform will provide a one-click Asset Merge function. You can choose to merge the old assets into the unified USDT balance or withdraw them directly.

• Deposits, Withdrawals & Transfers

  • Deposits: Deposit of USDTTRC and USDTSOL will close at 07:00 (UTC+8) on 12 May 2026. Following the upgrade, when depositing USDT, you will be prompted to manually select your target blockchain network as supported by the platform. (e.g., Ethereum, TRON).

  • Withdrawals: Withdrawal and internal transfer for USDTTRC and USDTSOL will remain open. After the upgrade, you can freely select the target network as supported by us when withdrawing USDT, making cross-chain transfers much more flexible.

• Historical Records

After the merge, all past orders and statements will remain the same.

• What you need to do

  • If you hold open orders for the affected trading pairs, please cancel them before the deadline.

  • For remaining balances of assets with their chain code(e.g., USDTTRC), please merge them into unified USDT account using the one-click merge tool, or withdraw them directly.

  • Review the new Client Terms and Conditions and Risk Disclosure Statement which will become effective on 12 May 2026.

II. Trading Pair Delisting & Liquidity Consolidation

The platform will handle all affected pairs in the orderbook in this order: Suspend Trading → Cancel All Orders → Formal Delisting. For Flash Trade and OTC, affected trading pairs will be removed from quotation and execution services at the effective time.

We strongly advise you to proactively cancel open orders for the following trading pairs before 07:00 (UTC+8) on May 12, 2026. Any open orders not canceled by this time will be automatically canceled by the system, with the relevant assets returned to your asset account. Details are as follows:

Note: USDTERC20 and USDT displayed on certain pages of the platform represent the exact same asset. Following this upgrade, all pages will show only USDT.

III. Timeline

Important Notes:

• Funds Security: To ensure the safety of your assets, please refrain from depositing or withdrawing the relevant tokens during the suspension window. If you currently hold open orders for the aforementioned trading pairs, you must cancel them before 7:00 (UTC+8) on May 12, 2026. Otherwise, the system will trigger an automatic cancellation of all pending orders and return the assets to your account.

• The platform cannot guarantee immediate and sufficient liquidity across every target network at all times; network channels may be dynamically adjusted based on real-time conditions.

IV. Customer Support

If you have any questions or require assistance, please contact us via the following channels:

• General Support: Email [email protected] or use Live Chat on our platform.

• Technical & API Support:

  • API Support: Send your inquiries to [email protected].

  • If you have a dedicated Relationship Manager or an existing communication channel, feel free to reach out to them directly.

Thank you for your continued support!

This content is provided by OSL Digital Securities Limited ("OSL HK") solely for the intended recipient and may not be distributed, reproduced, or disclosed without prior written consent. It is for informational purposes only and does not constitute, nor should it be construed as, an offer, solicitation, or recommendation to buy, sell, or subscribe to any securities, financial instruments, products, or services. This content does not constitute legal, tax, accounting, or financial advice. Recipients should seek professional advice before making any decisions.

OSL HK makes no representations or warranties as to the accuracy, completeness, or reliability of the information and accepts no liability for any loss arising from its use. Where third-party data is referenced, OSL HK makes no representation or endorsement regarding such data. All opinions and information are as of the date hereof and may change without notice.

Please refer below chain-related risks. For more information, please refer to our Risk Disclosure Statement.

Each blockchain network on which a Virtual Asset is supported has different technical protocols, security models, validator or consensus mechanisms, smart contract dependencies, maturity levels and congestion profiles. A technical failure, exploit, outage, cyber incident or operational disruption affecting one blockchain network may delay, impair, suspend or prevent deposits, withdrawals, transfers, settlement or other transactions involving such Virtual Asset on that network, and may not affect other supported networks in the same manner.

Confirmation times, settlement finality, transaction fees and the risk of forks or chain reorganisations may vary significantly across blockchain networks. As a result, transactions involving a Virtual Asset may be delayed, reversed, fail to settle as expected, or require different processing times and confirmation thresholds depending on the relevant network.

Support for a Virtual Asset on certain blockchain networks may be suspended, restricted, discontinued or ceased. Where support for a blockchain network is withdrawn or reduced, clients holding such Virtual Asset on that network may be required to transfer, convert or redeem their holdings within a prescribed period, and their ability to transfer, liquidate or otherwise deal with such Virtual Assets may be adversely affected.

Sending, depositing or withdrawing a Virtual Asset through the wrong blockchain network, an unsupported network, or an incompatible protocol may result in delayed crediting, failed transfer, inability to recover the relevant assets, or permanent loss. You are solely responsible for verifying the correct blockchain network before initiating any transfer, deposit or withdrawal.

Certain blockchain networks, including EVM-compatible networks, may use similar or identical wallet address formats. The use of a technically valid wallet address does not mean that the selected blockchain network is correct or supported, and this increases the risk of selecting the wrong network while using an apparently valid address.

Liquidity, transferability and withdrawal availability of a Virtual Asset may vary across blockchain networks. During periods of market stress, technical disruption, network congestion or reduced market participation, a particular network may experience withdrawal delays, reduced liquidity, wider spreads, pricing dislocation or trading at a discount on that network.

Any request, including but not limited to deposits, withdrawals, or transfers, may be delayed, suspended, or not affected if OSL HK, in its sole and absolute discretion, deems it necessary or appropriate. Such decisions may be based on internal risk assessments, regulatory compliance requirements, security protocols, or any other factor OSL HK identifies as relevant. OSL HK reserves the right to exercise this discretion without prior notice and shall not be held liable for any perceived loss or impact resulting from such actions.