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About DOSI Wallet

DOSI Wallet is a blockchain wallet service offered by LINE NEXT that can be used for purchasing and storing NFTs.

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Assets that can be managed on DOSI Wallet

You can use DOSI Wallet to manage digital assets issued by LINE Blockchain Developers.

However, it does not provide a service for managing crypto assets other than NFTs, such as FINSCHIA (FNSA).

Important: If you send FINSCHIA (FNSA) to a DOSI Wallet NFT address, the assets will be irrecoverably lost.

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About blockchains

Blockchain is a technology that encrypts data and processes it in a decentralized manner.

Because transaction data between individuals is synced and stored in blocks on the blockchain, it is difficult to hack, forge, or recreate. This also allows for transparent transactions.

DOSI Wallet utilizes blockchain technology so you can manage your assets safely and securely.

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NFTs

About NFTs

An NFT (non-fungible token) is a unique, non-interchangeable token.

Depending on the issuing service, NFTs can be used in games, as coupons, or in a variety of other ways.

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NFTs were added to my DOSI Wallet

An NFT will be added to your DOSI Wallet if:

• You bought one from a store.

• You acquired one from participating in an event.

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Can I transfer NFTs outside of DOSI Wallet?

There is currently no way to transfer NFTs from DOSI Wallet, either to other accounts within the service or outside.

A feature for transferring NFTs is currently in development.

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Saving your NFT images/videos

To save an NFT image or video:

1. Select the NFT on DOSI Wallet and open the details page.

2. Right click the image or video and save it.

Note: If you're using a smartphone, tap and hold the image or video, then save it.

You cannot download NFT videos on an Apple device (e.g. iPhone, iPad) with the Safari browser. Please use a PC web browser other than Safari.

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My NFTs disappeared

If there aren't any NFTs being held in your DOSI Wallet, it means they were all used, transferred, or registered for sale.

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Setting one of your NFTs as your profile image

You can set an NFT you own in DOSI Wallet as your profile.

Note: You may not be able to set some NFTs as your profile, depending on their properties.

You can also use the NFT set as your profile in DOSI Wallet as your profile in other services connected to DOSI Wallet.

To check which NFTs can be set as your profile:

1. Select an NFT on DOSI Wallet and go to its details page.

2. If you see the Profile NFT label underneath it, you can set it as your profile.

To set an NFT as your profile:

1. Log in to DOSI Wallet and select the menu icon at the top right of the screen > My Account.

2. Select the "+" button to the side of the image to open the Change profile page.

3. Select the desired NFT to set it as your profile.

Note:

- NFTs first purchased at a store are considered used if set as your profile image. Be careful, as NFTs that have been set as profile images cannot be refunded.

- If you purchase multiple NFTs at one time and later apply for a refund for part of the NFT order, you won't be able to set an NFT purchased with the order as your profile image until the refund has been completely processed.

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My profile image disappeared

You can only set NFTs you own in DOSI Wallet as your profile image.

Your profile will be reset to the default user profile if:

• You delete your profile yourself by tapping Delete profile.

• You no longer own the NFT in DOSI Wallet that you set as your profile. (E.g. You registered the NFT for sale on the store's marketplace; You used it to level up on DOSI Citizen; You moved it to another wallet address.)

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Tokens

Tokens were added to my DOSI Wallet

If you acquire a token from using a service, it will be added to your DOSI Wallet.

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Transfer History

You can check your transfer history for all of the digital assets you've sent or received with DOSI Wallet.

To do so, go to Transfer History from the menu at the top right of the DOSI Wallet screen.

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Your account

Signing up for a DOSI Wallet account

You can sign up for DOSI Wallet using an account from one of the following social media services.

• Facebook

• Google

• LINE

• NAVER

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I can't log in to the social media service I used to sign up for my DOSI Wallet account

If you are unable to log in to the service you used to sign up for your DOSI Wallet account (because you forgot your login information or for any other reason), we ask that you inquire with the relevant service directly for assistance.

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I forgot which account I used to sign up for DOSI Wallet

If you don't know the social media service account that you used to sign up for DOSI Wallet, please contact our Customer Center for assistance.

Note: You may be asked to provide your registered email address and phone number to verify your identity. If you don't know your registered email address or haven't verified a phone number, it may be difficult to confirm your account.

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Unlocking a locked account

Your account will be locked if:

• You lock the account yourself.

• There are suspicions of unauthorized transactions or for other security reasons.

• You're prohibited from using the service based on the DOSI Wallet Terms of Service or are engaging in any unauthorized or prohibited activity.

You will not be able to unlock your account yourself in any of the cases above. Please contact our Customer Center for assistance.

If you can't use your account due to repeatedly entering the wrong passcode, see the Help article "Reactivating your DOSI Wallet account after entering the wrong passcode too many times" for the steps to lift the suspension.

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I'm not receiving the verification email

If you don't receive the verification code email when trying to verify your email address, it may be because:

• Your email address was not entered correctly.

• The email was sent to your spam folder or another folder other than your inbox.

• You have spam filters in place (e.g. so you don't receive emails containing URLs).

Note: If you have spam filters in place, try requesting the verification code again after temporarily disabling them.

• You have domain filters in place on your email client.

Note: In this case, update your settings to allow the domain "wallet.dosi.world".

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I didn't receive the phone number verification code

If you don't receive the verification code, try restarting your device.

If the code still doesn't arrive, make sure that:

• You aren't trying to perform verification from a country or region where the DOSI Wallet service is unavailable.

Note: For details, see the Help article "Countries and regions where DOSI Wallet is unavailable".

• You entered the correct phone number.

Note:

- Your device must be able to receive text messages.

- Virtual phone numbers cannot be verified.

• The relevant phone number hasn't already been verified by another account.

• You're not using your device in an area with poor reception or an unstable network connection.

• You don't have any text message spam filters in place.

If you've checked everything above but still don't receive the verification code, please contact the Customer Center for assistance.

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Deleting your DOSI Wallet account

To delete your DOSI Wallet account:

1. Tap the menu icon at the top right of the service screen > My Account.

2. Tap Delete Account at the bottom of the screen.

Important:

- If you've signed up for any brand stores, you need to leave them by revoking your agreement to their terms and conditions before deleting your account.

- When you delete your account, you will lose ownership of all the NFTs you have.

- Please take care when deleting your account, as your previous data cannot be restored even if you sign up for DOSI Wallet again.

- Deleting your DOSI Wallet account won't affect your LINE BITMAX account.

For more information, contact the Customer Center here.

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Signing up for DOSI Wallet again after deleting your account

There's no restriction on the number of times you can sign up for DOSI Wallet. Just sign up again using a Facebook, Google, LINE, or NAVER account.

Note: Assets from the previous account that you deleted will not be restored when you sign up again.

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What happens to your assets when your DOSI Wallet account is deleted

When you delete your account, DOSI STORE becomes inaccessible and you lose ownership of any NFTs you have.

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Changing your registered email address if you're not receiving notifications via email

To change your registered email address:

1. Log in to DOSI Wallet and select the menu icon at the top right of the screen > My Account.

2. Select the arrow next to your registered email address.

3. Enter and verify a new email address.

Note: If you were using LINE BITMAX Wallet, first register your email address by following the above steps.

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Changing your phone number

To change your registered phone number:

1. Log in to DOSI Wallet and select the menu icon at the top right of the screen > My Account.

2. Select the arrow next to Verification complete.

3. Enter your passcode.

4. Enter and verify a new phone number.

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Can I keep using DOSI Wallet after deleting a linked service's account?

Yes, you can still use DOSI Wallet after deleting an account for a linked blockchain service (e.g. DOSI services, such as DOSI Citizen).

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Can I keep using services linked to DOSI Wallet if I delete my DOSI Wallet account?

You may no longer be able to use some services if you delete your DOSI Wallet account. Please inquire with the service provider before deleting your DOSI Wallet account.

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The permission screen still appears after granting permission for the social media account I verified at login

If you unlinked DOSI on the social media service's account settings, you will need to grant permission again the next time you log in to DOSI Wallet.

If LINE was the service you verified, the permission screen may appear again 180 days after initially granting permission depending on the permissions you authorized.

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Passcode

About your DOSI Wallet passcode

Your passcode is the six-digit security number you set when you signed up for DOSI Wallet. You need to enter it for verification when you log in to the service and make payments.

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Changing your DOSI Wallet passcode

To change your DOSI Wallet passcode:

1. Tap the menu icon at the top right of the service screen > My Account.

2. Tap Change Passcode.

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I forgot my DOSI Wallet passcode

If you forgot your passcode, you can reset it by following the steps below.

1. On the passcode entry screen, tap Forgot your passcode?

2. On the Reset Passcode screen, tap Send next to your email address.

3. Enter the verification code you received via email.

Note:

- Verification codes are only valid for a limited time, so be sure to enter the correct code within the time limit.

- If you registered with a LINE account in Japan, you'll receive a verification code via LINE message.

4. Enter a new passcode.

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Reactivating your DOSI Wallet account after entering the wrong passcode too many times

If you enter the wrong passcode five times in a row, your account will temporarily be deactivated as a security measure.

To reactivate your DOSI Wallet account, select Reactivate account in the Account Deactivated email that was sent to your registered email address.

Note: If you registered with a LINE account in Japan, you can also reactivate your account from the Account Deactivated message you received on LINE.

Once your account has been reactivated, reset your passcode to ensure that your account is secure.

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Buying/Selling

Countries that cannot make payments with DOSI Wallet

DOSI Wallet aims to provide a service that lets users worldwide make payments quickly and conveniently. However, unsupported countries cannot be selected for a billing address on the payment screen.

The following countries cannot make payments in US dollars.

• Japan

• The United States

The following countries cannot make payments in US dollars, FINSCHIA (FNSA), or Ethereum (ETH).

• Countries restricted from using the service based on DOSI Wallet's internal policies

Note: For the list of restricted countries, see the Help article "Countries and regions where DOSI Wallet is unavailable."

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Available payment methods

You can use a credit card, debit card, NAVER Pay, FINSCHIA (FNSA), or Ethereum (ETH).

When paying in US dollars or Korean won, the methods that you can use will depend on your billing address.

If your billing address is in Korea:

You can use NAVER Pay Points and NAVER Pay Account Transfer Easy Payment.

If your billing address is in another country:

You can use a credit card, a debit card, and Apple Pay/Google Pay (provided by Stripe).

Important:

- The Apple Pay and Google Pay options provided by Stripe may not be available depending on the region you're accessing DOSI Wallet from and your environment.

- As regulations for NFT products vary by country, credit card payments may be restricted in some countries.

- For a list of countries where payments are not supported, see the Help article "Countries that cannot make payments with DOSI Wallet."

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I saw an error when trying to make a payment

An error will appear if there's an issue with any of the payment information that you enter (e.g. your card number is incorrect, your card has expired, you've exceeded your credit limit). In this case, make sure that your information is correct and can be used.

If you see any other type of error, contact us via the DOSI Inquiry Form and include the following information.

• The email address that you use to log in to DOSI Wallet

• The name of the NFT you tried to purchase, the date and time of the purchase attempt, and the payment method you tried to use

• The exact details of your situation when the error occurred and the error message in its entirety

• Any other details related to the payment

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Checking payment details

To check the details of your payments:

1. Log in to DOSI Wallet.

2. Select the menu icon at the top right of the screen.

3. Select Purchase history.

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I was charged for something I don't remember purchasing

If you were charged for a payment that you don't remember making, contact us via the DOSI Inquiry Form and include the following information.

• The email address that you use to log in to DOSI Wallet

• The date and time of the payment

• Any other details related to the payment

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Refunding purchased NFTs

NFTs that LINE NEXT Inc. sells directly fall under the refund policy of each individual NFT-related store (e.g. DOSI Store, AVA, Game DOSI). For more information, check the details page of the NFT you purchased or the relevant store's FAQ section.

NFTs that LINE Next Inc. mediated the sale of (while not being the seller) do not fall under an individual store's refund policy. The transaction participants bear all responsibility for mediated transactions. LINE NEXT Inc. offers no guarantees regarding a seller's listed product information or refunds, and does not act on behalf of any participant. Please use caution when engaging in transactions.

If you have any other questions about refunding purchased NFTs, contact us via the DOSI Inquiry Form and include the following information.

• The email address that you use to log in to DOSI Wallet

• The payment date and time

• The order ID

• Any other details related to the payment

Note: You can check the payment date and order ID in the confirmation email that you received after purchasing the NFT.

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Are there service fees for purchasing NFTs?

There are no service fees when you purchase NFTs using a credit card, debit card, or NAVER Pay.

However, if you use FINSCHIA (FNSA) or Ethereum (ETH), you must pay a blockchain transaction fee called a "gas fee." You can confirm the required gas fee at the time of purchase on the DOSI Vault (when using FINSCHIA) or MetaMask (when using Ethereum) screen.

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I want to sell NFTs that I purchased

You can register an NFT for sale after selecting Sell from the item details screen in DOSI Wallet and going to the store you purchased it from, or register an NFT directly from the store you purchased it from.

You can also check your sale history at the store where you registered your NFT for sale.

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What is the Korean won (KRW) base price when using NAVER Pay?

When you use NAVER Pay, the payment amount is subject to the rate of the day, which is calculated taking into consideration the current exchange rate and any applicable service fees.

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About 3-D Secure

To ensure that payments are made safely and securely, DOSI Wallet applies 3-D Secure to all credit and debit card payments. This means that your identity needs to be verified to complete a payment after entering your card information.

The 3-D Secure service is provided by your credit card company, so we ask that you contact them directly if you have any questions about setting it up.

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About spending limits

Currently, the spending limits for DOSI Wallet depend on your payment method.

• Credit/debit card: USD 10,000 per transaction

• NAVER Pay: KRW 2,000,000 per transaction and KRW 2,000,000 per day

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Making payments with FINSCHIA

DOSI Wallet allows payments in FINSCHIA (FNSA) using the DOSI Vault wallet.

To make a payment in FINSCHIA, you need a DOSI Vault wallet and enough FINSCHIA to cover the NFT cost and the gas fee.

On PCs:

To use DOSI Vault on a web browser, you need to install the DOSI Vault extension.

The installed DOSI Vault extension will open when you make your payment and connect to DOSI Vault from the payment page.

The DOSI Vault extension can be installed on the following browsers:

• Chrome

• Firefox

• Whale

Note: We do not recommend using an unsupported browser, as doing so may result in various issues.

On mobile devices:

You need to install the DOSI Vault app on your device.

When making a payment, you can go to the DOSI Vault app from the payment page, then connect to DOSI Vault and pay from the in-app browser. After you complete the payment, return to the DOSI Wallet mobile website.

If you're using Samsung Internet Browser, configure your settings with the steps below.

1. Tap Settings in Samsung Internet Browser > Useful features.

2. Turn ON Open links in other apps.

Important: Make sure to approve the FINSCHIA transfer within one minute on the DOSI Vault payment screen. If you take longer to approve it, the payment may fail.

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Making payments with Ethereum

DOSI Wallet allows payments in Ethereum (ETH) using the MetaMask wallet.

To make a payment in Ethereum, you need a MetaMask wallet and enough Ethereum to cover the NFT cost and the gas fee.

If you're using a PC:

You need to install the MetaMask extension in your web browser. The installed MetaMask extension will open when you make your payment and connect to MetaMask from the payment page.

The following browsers support the MetaMask extension:

• Chrome

• Firefox

• Edge

Note: The MetaMask extension may not function properly with Brave, Opera, or unsupported browsers.

If you're using a mobile device:

You need to install the MetaMask app on your device.

When making a payment, you can go to the MetaMask app from the payment page, then connect to MetaMask and pay from the in-app browser. After you complete the payment, return to the DOSI Wallet mobile web page.

Note:

- When using MetaMask, make sure you are connected to Ethereum Mainnet and not a different mainnet.

- Make sure to approve the Ethereum transfer within one minute from the MetaMask payment screen. If you take longer to approve it, the payment may fail.

Payments with Ethereum in DOSI Wallet are made using MetaMask, but we do not handle MetaMask related inquiries. Contact MetaMask directly if you experience an error or need help with your MetaMask wallet.

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Can I check the NFTs I purchased with Ethereum in MetaMask?

DOSI Wallet allows payments in Ethereum (ETH) with MetaMask, but NFTs are issued from LINE Blockchain Developers. For this reason, you can only check your NFTs in DOSI Wallet.

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About the gas fee

When you purchase an NFT with FINSCHIA (FNSA) or Ethereum (ETH), there is a "gas fee." This is a transaction fee that you pay to the validator of your purchase on the blockchain.

It is not guaranteed that a purchase will succeed, and gas fees cannot be refunded, even if a purchase fails. Also, the cost for gas fees is not a fixed amount and varies mainly depending on the network's availability and consensus model.

DOSI Wallet has no authority to control gas fees, and receives no revenue from them.

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Changing your billing address

Billing information is automatically set based on the country code of your registered mobile phone number. If you want to change your billing information, register a mobile phone number from the relevant region by going to the menu icon at the top right of the DOSI Wallet screen > My Account.

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Checking Taiwanese electronic invoices (eGUI/E-Invoice)

In order to comply with local laws set by the Ministry of Finance in Taiwan, DOSI Wallet supports electronic Government Uniform Invoices (eGUI) through Taiwan's E-Invoice Platform.

When you purchase an item on DOSI, you can check your E-Invoice from Taiwan's E-Invoice Platform for up to 48 hours. A notification related to downloading your E-Invoice will be sent to your account's registered email address.

You can check the email address the notification will be sent to and your invoice details from the purchase history screen. To check, go to the relevant purchase history and tap E-Invoice at the bottom of the purchase history details screen.

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Other

Countries and regions where DOSI Wallet is unavailable

Some countries and regions are restricted from using the service based on DOSI Wallet's internal policies.

These countries and regions include:

Afghanistan, Belarus, Central African Republic, Cuba, Democratic Republic of the Congo, Ethiopia, Iran, Iraq, Lebanon, Libya, Mali, Myanmar, Nicaragua, North Korea, Russia, Somalia, South Sudan, Sudan, Syria, Ukraine, Venezuela, Yemen, Zimbabwe

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How do I file taxes?

You may need to report taxes applied to your NFT purchases, sales, and transfers.

DOSI Wallet does not offer guidance with tax filing or filing on your behalf. For detailed information about taxes, please consult a tax agent.

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I can't open the DOSI Wallet browser in the MetaMask app

We have been made aware of some cases in which DOSI Wallet doesn't open in the MetaMask app with Android 12 or later.

Note: Also try the steps below if you're having the same issue with an OS other than Android 12.

Please try again after configuring your Android settings with the following steps.

1. Go to your Android device's Settings > Apps & notifications.

2. Tap Default apps > Opening links > MetaMask.

3. Turn ON "metamask.app.link" under Supported links

If you're using Samsung Internet Browser, configure your settings with the steps below.

1. Tap Settings in Samsung Internet Browser > Useful features.

2. Turn ON Open links in other apps.

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I agreed to the Marketing Policy but am not receiving promotional emails

If you're not receiving promotional emails from DOSI, it's possible that:

• The emails have been marked as spam.

• You unsubscribed from the mailing list.

If you've checked your spam folder but still don't see any emails, please contact the Customer Center for assistance via this Inquiry Form.

Note: Choose Service: DOSI Wallet.

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Recommended system specifications for DOSI Wallet

Smartphones

• iOS: 14.0 or later

• Android OS: 7.0 or later

Note: This service is not supported on tablet devices.

PCs

• Windows 7 or later

• Mac OS X 10.11 or later

Browsers

• Safari

• Google Chrome

• Microsoft Edge

• Mozilla Firefox

Note: Be sure to use the latest version of your browser.

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Can I log in from multiple devices and browsers?

You can only log in to your account from one device or browser at a time.

When you log in to the service from one place, you'll be logged out from any other devices and browsers.

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I can't log in with Safari

If you're using Private Browsing in Safari, you may not be able to log in to DOSI Wallet. You can log in as usual if you turn Private Browsing off.

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About W-8BEN

Many countries, including Korea and the United States, have established tax treaties and withhold a 30% tax on prizes. To lessen the burden of the tax payment and responsibility on the user, the enterprise providing the prize is obligated to withhold the tax at the source, then pay it. The form you need to submit at that time is W-8BEN.

When you prepare your W-8BEN and obtain your prize, you'll receive Form 1042-S, a report stating that the payment of taxes is complete, via e-mail. (We plan to announce when this form will be issued at further notice.)

So long as there are no changes to your information, the information in the W-8BEN you filled out is valid until the end of December three years after the date you submitted it. If you don't update your W-8BEN by the end of the December three years after the date you submitted it, from then on you'll become unable to obtain prizes as usual.

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