How to import acquired cryptocurrency to an external wallet

6 min readFeb 28, 2022

This article describes how to import cryptocurrency earned in the smartphone game “EGGRYPTO” to an external wallet.

The “EGGRYPTO” app has a built-in wallet (EGGRYPTO Wallet), and cryptocurrency distributed through campaigns is given to the EGGRYPTO Wallet.

However, the EGGRYPTO wallet cannot be used for transactions.

So it would help if you had the EGGRYPTO wallet imported into an external wallet (ex, MetaMask) where you can trade.

We will now explain the procedure in the following 3 parts.
1. Open a wallet “MetaMask”
2. Obtaining the private key for EGGRYPTO wallet
3. Import EGGRYPTO wallet to MetaMask

If you already have a wallet that can be used for transactions, please read from “2. Obtaining the private key for EGGRYPTO wallet”.

Also, depending on the type of cryptocurrency, other networks may be required. The procedure for doing so is also explained in this section.
4. Add a network (Polygon)

*The procedures and images shown are current as of February 28, 2022. If the specifications of an external tool have changed, please follow the guide of that tool.

1. Open a wallet “MetaMask”

This time, I will describe the registration procedure for the wallet service “MetaMask”. Other wallet services can also be used, so please use the service that best suits your needs.

1–1. Download MetaMask
In this article, we will explain the procedure on iPhone. Download the MetaMask app from the Appstore or the official website.

(Left) MetaMask in AppStore (Right) Tap the “Download” button on the official website

1–2. Setup MetaMask
Open the app and follow the steps as instructed.

You will be asked to make a selection along the way, but this time choose “Create a new wallet”.

A “Secret Recovery Phrase” will be generated and displayed during the registration procedure. This is an important key that will be used to restore MetaMask. Please do not disclose it to others and save it.

*The next step is to check using the “Secret Recovery Phrase”.

Once you have completed the series of steps, you will have set up your MetaMask account.

2. Obtaining the private key for EGGRYPTO wallet

Operate the “EGGRYPTO” application to obtain the private key of the EGGRYPTO wallet.

The private key obtained here can be imported into the wallet service to use the cryptocurrency.

*Please note that the private key is critical information and should never be disclosed to others. In the unlikely event that others become aware of it, your cryptocurrency or NFT (Raremon) may be stolen.

2–1. Obtaining a private key
Tap the “三” tab on the home screen to open the menu.

Tap on the top of the menu where the account name is displayed.

(Left) Tap the “三” part (Right) Tap the account name

On the Account screen, you will see the address of your EGGRYPTO wallet (a string of alphanumeric characters).

Tap “View Password” next to it to the password screen.

After the warning message is displayed and redirected to the password screen, tap the mosaic area to get the password (private key).

Tap to display the password (private key)

This completes the process of obtaining the private key for the EGGRYPTO wallet.

3. Import EGGRYPTO wallet to MetaMask

Use the private key you obtained in the previous step to link your wallet.

3–1. Import EGGRYPTO Wallet
First, display the MetaMask home screen. Tap the circular icon at the top of the home screen.

Tap it to display the “Accounts list”. Tap “Import on Account” at the bottom.

(Left) Tap the icon on the home screen (Right) Tap “Import on Account” in the account list

The import screen will appear.
Paste the “Private Key” you obtained in the previous step, and tap “Import”. If successful, the message “Account successfully imported!” will appear on the screen.

(Left) Account import screen (Right) Successful import screen

To check if it has been imported correctly, tap the area in the center of the home screen where the address is omitted and copy the address.

If the copied address is the same as the EGGRYPTO wallet address on the “EGGRYPTO” account screen, it has been imported successfully.

(Left) Copy the address of MetaMask (Right) Check if it is the same as the address of EGGRYPTO

This completes the procedure for importing the acquired cryptocurrency into MetaMask (external wallet).

4. Add a network (Polygon)

MetaMask can handle Ethereum with its default settings.

However, some cryptocurrencies (ex, MATIC) require additional support. That is to add the corresponding network.

This article will explain the procedure to add the Polygon network, which is necessary for using MATIC.

4–1. Add the Polygon network
Tap the “三” button on the top left to display the menu tab. Tap “Settings” on the menu tab. Tap “Networks” in the Settings tab.

(Left) Tap “三” on the home screen (Middle) Tap “Settings” on the menu tab (Right) Tap “Networks” on the settings tab

Tap “Add Network” on the Network screen. When the input screen appears, please enter the following information.

Network Name：Polygon Mainnet
RPC Url：https://polygon-rpc.com/
Chain ID：137
Symbol：MATIC
Block Explorer URL：https://polygonscan.com/

(Left) Tap “Add Network” on the network screen (Right) Enter information on the input screen

This completes the addition of the network.

The network will have switched to “Polygon Mainnet” when you return to the home screen. If the top part of the home screen under “Wallet” is still “Ethereum Main Network”, tap “Wallet”.

When the network screen appears, scroll down and tap “Polygon Mainnet”.

The network display will change to “Polygon Mainnet” and the currency at the bottom will change from “ETH” to “MATIC”.

(Left) Tap “Wallet” on the home screen (Right) Select it on the network screen

You will now be able to handle MATIC.

The network you should add will vary depending on the cryptocurrency. Please add the appropriate network if you want to handle a different cryptocurrency.

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