The Ethereum network will be undergoing a scheduled upgrade at certain blocks.
MCH will stop some functions to prepare for unexpected contingencies by the update.

■ The Ethereum Network update「Istanbul」
9,069,000 Blocks
（UTC December 6, 2019, 9:30 — December 9, 2019, 4:30 *expected)

The duration will change depending on the speed to generate the blocks

We will stop some functions on the following schedule.

■MCH some function stop period
From :UTC December 6, 2019, 8:30
To: when we finish the maintenance after the Ethereum Network update

We will have maintenance to stop some functions on the following schedule.

■ Maintenance to stop some functions
UTC December 6, 2019, 8:30–9:30

We will have maintenance to resume some functions on the following schedule.

■ Maintenance to resume some functions
UTC December 9, 2019, 4:30–5:30

This schedule will change depending on the status of the Ethereum Network update.
* Even If the Ethereum Network finishes updating earlier, we will not start the maintenance earlier to avoid impacts on the official duel cups.

We will stop the following functions.

■Shop

Buying GUM
Buying MCH Prime with ETH

■Inventory

Transfer to Ethereum Network
Transfer to MCH World
Preparation for transfer
NFT convert

■Others

Send and receive assets on the external website like OpenSea

[Notice]

You don’t have to carry out any procedure by yourself for the Ethereum Network update.
Our actions are subject to change by situation of the the Ethereum Network update.
Please note that we do not take any responsibility or liability for any damage or loss caused through the Ethereum Network update.
Please note that we do not answer any question related to the Ethereum Network update.

We appreciate your understanding.

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※The content of announcement is subject to change.

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