VI. For More Info

Is there any further information about cryptocurrency in MAS Pay wallet app?
The user can click on the icon of the bottom compass to enter the page, which provides a number of cryptocurrency assets, trend quotes, related financial reports, blockchain discussion groups and other multi-related links for users to use.
If there is a problem about using app, is there any custom service to answer?
If the user has any problems in use, please click the gear icon on the right hand side of the page, select other, click “Feedback” to enquire, we will reply to the letter as soon as possible after receiving the letter to help users solve problems.
How do I know other related messages or activities about MAS Pay wallet ?
Users can click on the gear icon at the bottom of the page and select “Follow us”. We have official accounts such as Wechat, Telegram, Facebook, Medium and Line to provide the latest news or events from time to time. Welcome to subscribe!

V. User data backup

Does the wallet need to be backed up?
After you create your identity, the page will automatically jump out of your personal QR code. The user should save QR code and store it at this time. You can also select the account settings in the settings on the right hand side of the gear icon at the bottom of the APP page. : “Account Security” or select “Backup Identity”.
Account Security: Select the type and address of the wallet to be reserved. After click, the page will display the method of copying the private key or QR code to save.
Backup Identity: After entering the password and password prompt, the personal backup QR code will be displayed. It is recommended that the user divide all the wallet information and keep it properly, in case the person has the opportunity to obtain the private key information and the possibility of losing the cryptocurrency assets.
If the wallet is stolen, can I request to freeze the account?
As a decentralized wallet, MAS Pay wallet does not hold the private key, so it is impossible to freeze the account or transaction rollback.
What if the QR code or the wallet private key is not backed up?
If the user loses or does not have information such as wallet, private key, etc., MAS Pay wallet can’t help the user to retrieve it. This is very important, so remind the user again: important information such as wallet and private key must be properly kept.
What should I do if my phone is lost?
If you confirm that you have saved and backed up your wallet and private key, your user assets are still safe, but we MAS Pay still recommend that users take security precautions to restore MAS Pay wallet information with QR code on the new phone, and then transfer the currency in the wallet to another new built-in wallet.
Can I delete MAS Pay wallet app if I don’t need it?
If the user no longer needs to continue using it, select the gear icon on the right hand side of the page, click “Delete Account” in the account settings and press OK.

IV. SMS Operation

What are the functions in MAS Pay wallet community?
Use MAS Pay wallet community to chat with friends and take photos, send pictures, files, collections, and chat with friends.

How do you add friends to the community?
MAS Pay wallet provides community chat function. Users can click the icon at the bottom of the page and click the “+” icon in the upper right corner of the screen to add friends, groups or create groups. After the other party agrees to join the friend, Click the address book function of the portrait icon at the top of the page and click “Agree” to join the friend or group.

If the friend conveyed a private message, can I delete the conversation record?
MAS Pay wallet has the function of providing “secret chat”. You can click on the dialog box in the upper right corner of the chat room with friends. Before turning on this function, you must first start “decentralization” and then select the time limit of secret chat, the options would be each single conversation or retaining 5, 10, 20 minutes, etc. After the setting is completed, the APP will delete all the conversation content records according to the retention time limit set by the last operation of both parties. The purpose of this feature makes sure that no chat log is not stored by any device and can be deleted any time, increasing the security of chatting mutually.
◎The group also has the function of secret chat. At present, only those who creates the group are authorized to start a secret chat function.

How do I join other groups in MAS Pay community?
Want to join a nice group and learn with everyone? Just click on the QR code thumbnail in the upper right corner of the dialog window of the group and the dialog box will pop up the prompt to scan the QR code to join the group. If you have friends they also use MAS Pay wallet app, you can directly scan the code to join. You can also take a screenshot of the QR code, go to the community page, click the “+” icon in the upper right corner of the top row, select join group, in the upper right corner of the Scan Camera page, select QR code photos can join the group.

III. Wallet Setting

How many crypto currency does MAS Pay wallet support?
MAS Pay wallet supports various wallet type such as bitcoin, etheric currency, and stablecoin. Various types of wallets can be added with multiple sets of wallets in the same currency, and the wallet type-1 and wallet type will be sequentially The list of 2 methods lists, and more new currency wallets will be opened in the future.

How to create a new wallet?
Click the “+” symbol in the upper right corner of the wallet page, select “Add Wallet”, add a BTC wallet or ETH wallet, and the added wallet will be displayed in the wallet of the individual currency.

How to change the name of user’s wallet?
The added wallet will be stored in the same currency wallet category. Please select the type of wallet you want to modify and click on the wallet address. Then click the gear icon in the upper right corner. For example, click BTC Wallet on the homepage of the wallet, select the first set of wallet address, click the gear icon in the upper right corner of the page, and then click the thicker black font of BTC Wallet to start changing the name of the wallet.

How to delete the wallet?
If you want to delete the new wallet, click the currency wallet address you want to delete, click the gear icon in the upper right corner, and click the red prompt “Delete Wallet” to delete the wallet you don’t want to use again.

How to transfer assets from other crypto currency wallets?
Users can select the “+” symbol in the upper right corner of the wallet page, select “Use identity QR code”, scan the wallet QR code of other platforms to import the wallet, or select “Use wallet private key” to select the type of wallet to be imported. Select the scan code icon in the upper right corner, scan the QR code of other platform wallets or read the stored other wallet QR code images for import.

Can assets in MAS Pay transfer to other crypto currency wallets?
Yes. MAS Pay wallet transceiver is based on blockchain network and can be forwarded to other addresses.

Stablecoin (USDT) transfer
The transfer and collection of stablecoin is the same as that of other currency wallet transfer and collection operations. The only difference is that the stablecoin has a basis based on the Bitcoin and Ethereum agreements, so the two cannot transfer each other. Simply put, If you want to transfer money or collect money, click on the stablecoin type wallet on the homepage of the wallet, and then choose to use BTC or ETH to operate. In this step, if you choose BTC, you can only transfer or collect bitcoin. Otherwise, only You can transfer or collect the Ethercoin. After selecting the category, select the wallet you want to operate and click on the option you want to operate in your assets. If you want to transfer the funds, click the transfer, fill in the amount, address and password. To complete the transfer, to receive the payment, click the payment button and share the QR code or address displayed on the screen with the payer.

Does USDT transfer also require GAS fee?
The stored USDT is based on the Omni protocol and will be stored at the address of Bitcoin. Therefore, a small amount of bitcoin is required to be paid as a miner’s fee when transferring funds. At least 0.0002 bitcoin needs to be recharged to the same wallet address as a miner’s fee. There is enough miner’s fee. After that, you can transfer out the USDT. Conversely, if the USDT based on ERC-20 is transferred, ETH is required as a miner’s fee.

Will the USDT transfer generate a BTC transfer while transferring funds at the same time?
The USDT is a cryptocurrency issued by the BTC blockchain. In order to avoid the delay of the BTC block operation by a small amount of transactions each time, each time a USDT transfer is initiated, a small amount of BTC transfer is generated.

When the USDT is transferring, how many BTCs should there be in the same wallet address?
To transfer any USDT, plus the required miner’s fee, the wallet must have at least 0.002 BTCs in the same address to ensure the transfer is successful. At the same time, after receiving the USDT transfer, the payee will receive the same BTC wallet address as the payment address. A minimum amount of BTC transfer will also be received.

How long does it take for the transfer of USDT to arrive?
USDT transfers will be affected by network conditions and miners’ fees. Higher miners’ fees will shorten the trading hours. If you want to speed up the transaction, it is recommended to increase the miners’ fees.

What if the first transaction has not yet arrived, can the second one be transferred successfully?
According to the current design logic, the first transfer will occupy UTXO (unconsumed transaction output) until the transfer is successful, and the quota will be released. It is recommended that the first USDT transfer be successful before the second one is operated.

The wallet can’t find out other new cryptocurrency for token?
MAS Pay wallet will automatically display the Token icon of the imported wallet, no need to increase on user’s own. If the wallet can’t display the icon that means current wallet does not support this currency. The wallet will support more after the update.

Can’t transfer successfully?
Please confirm that the transfer address is correct and that the same currency transfer address or miner fee is sufficient. Insufficient miners may also be a factor leads to unsuccessful transfer.

What should I do if I forget my wallet password?
The only way to re-create the password is to delete the app or delete the account in settings, and then reset the new wallet password by “QR code recovery”. User only needs to follow the instructions on the page, you can import the previous wallet record to new device.
◎Before deleting the APP or account information, you must back up the wallet information previously.

What kind of currency is the wallet used as the unit?
The system is initially based on CNY (RMB) as the display unit. Users can select the basic settings of the gear icon, click on “Denomination Currency” and click TWD or USD as the pricing unit.

Cryptocurrency fluctuates at any time.
MAS Pay wallet converts user’s assets directly into the set total amount of the pricing unit and display it in the wallet. Since the cryptocurrency will fluctuate at any time, the total amount displayed will be different, not means the asset being stolen.

How does MAS Pay wallet ensure the safety of user funds?
MASFi  has a professional team of engineers. The official team also provides security protection for the wallet. In addition, the private key of wallet will only be stored on the client. Only when the transaction is needed will the user enter the password for login. We MAS Pay wallet suggests users reserve and save important information such as wallets and private keys properly.

II. Lighting Network Payment

What is cross-chain?
Take most familiar cryptocurrencies BTC and ETH as example. Because cryptocurrencies use different calculation models and verification methods, their own valuable currencies can only be circulated in the same technology range. Different chains and currencies are independent. Cross-chain, as the name suggests, is to act as a bridge between chains and chains. Through technology, value can be circulated between chains and chains.
What is mapping?
Our mapping technology mainly stores the amount of cryptocurrency exchange we need to be stored in MAS Pay wallet MainNet. MAS Pay wallet will generate equivalent cryptocurrency lightning tokens for storage or exchange. For example, Xiaomei deposits 5 BTCs on MASPay, MASPay generates 5 lightning bit tokens, Dabao also deposits 10 ETHs on MAS Pay wallet, and MAS Pay wallet generates 10 lightning ether tokens. The process of generating equivalent lightning tokens is called mapping.
What is a smart contract?
Smart contract is a special protocol used in the development of contracts in a blockchain and is used primarily to provide conditions for verification and execution of smart contracts. Smart contracts contain code functions and can interact with other contracts, make decisions, store data and transfer Ethereum.
What’s Lightning Network ?
MASFi has developed a mainnet called MAS Pay , through token swap method in MAS Pay mainnet, the transfer/receipt can be quickly arrived and more convenient to exchange assets in different currencies.
The mainnet mainly was built for multi-technology service blockchain platforms such as universal smart contracts, cross-chain integration, and advanced conditional payment.
What’s MASX token ?
MASX is a MASFi-based application token developed by the MASFi team. The development of MASFi  chain focuses on the provision of technical services such as lightning network payment, cross-chain cooperation, and smart contract development. The developed MAS Pay can be used as a lightning network payment. Applications such as gas fee, cross-chain cooperation related charges and sub-chain of MAS Pay, smart contract production fee developed on the MAS Pay MainNet.
How to use lightning network payment?
To use the lightning payment function, you must deposit the currency you want to operate into MAS Pay. In Android and IOS version, click the function button in the middle to go to lightning payment page and choose to do lightning payment. Follow the prompts to select the payment wallet to be deposited and fill in the transfer information, click to confirm, wait a short while, the deposited currency will be displayed at the total amount of lightning payment page. To use MAS Pay wallet for quick transfer/receipt, please click the currency you want , click the button for lightning transfer/receipt, fill in the information or scan the code according to the prompt. Meanwhile, you can experience fast transfer feature provided by MAS Pay wallet.
* While using Lightning Transfer, please fill in the MASX Lightning Payment Address.
Can I transfer out my cryptocurrency in the lightning network ?
If the cryptocurrency is to be transferred out of MAS Pay wallet, please click on the currency you want to propose. Here, take Bitcoin as an example. Click “Propose” to fill in the general currency collection address and amount. To export coins to the general wallet, both MASX and BTC gas fee are deducted. At the same time, BTC gas fee will be deducted from the proposed amount. After confirming, the currency will be transferred to the general wallet.
Do I need to pay gas fee for using lightning?
When using MAS Pay wallet’s lightning payment function, you need to deposit the currency into MAS Pay wallet. Take Bitcoin as an example. The process of depositing only consumes BTC as gas fee. If there is already a transfer/receipt amount in MAS Pay wallet, only MASX will be consumed during the transfer process. To put the cryptocurrency from MAS Pay wallet to the general wallet for use, it costs MASX and BTC both.
What’s the difference between lightning payment and general wallet payment?
The lightning payment page provided by MAS Pay wallet is a functional interface for cross-chain asset swap. Through mapping technology, different cryptocurrencies can be converted into chain and achieve exchange of different cryptocurrencies rapidly.
For example, Bob wants to exchange 1BTC for 3ETH with Alice, both of them only need to deposit the required amount into MAS Pay wallet, exchange through the chain mapping technology, Bob and Alice can instantly receive BTC and ETH, without trading trouble steps such as other pipelines are exchanged for the required currency, so it is different from the function of general wallet as asset storage.
Why the transaction fails even my wallet has enough assets to pay for gas fees?
Because Bitcoin’s trading model is calculated in UTXO, the full name is Unspent Transaction Outputs, which is a no-cost transaction. The blockchain is used to illustrated and can be regarded as a decentralized public account. Each node can perform verification and data backup for each transaction, but no node has a book record of all account balances, so every time a transaction occurs, the miner must confirm the entire blockchain. Whether the amount transferred has not been spent or the correct amount of money to be transferred in the chain assets. In short, it is best to follow the one-in-one-out principle in the operation transfer/receipt process. If you use the one-input and multi-out operation, MAS Pay wallet will jump out tips of the transaction failure (the assets and gas fee are sufficient), then you have to transfer Bitcoin (or USDT of the bit protocol) in order to transfer assets again.
Do you have to use MAS Pay to use the lightning payment function?
To experience the fast transfer/receipt of lightning payment, you have to download MAS Pay Wallet APP for use. When using MAS Pay for lightning payment, a special set of transfer/receipt will be preset.When depositing/removing coins into MAS Pay wallet, transaction details will also be displayed in the general wallet, with different address information, users can better distinguish whether the assets are stored in/out of MAS Pay wallet.

I. Rookies’ Manipulate Issues

Log in info for new users
When a new user uses the wallet, a new identity needs to be created. After the user name and password are set, the system will generate an unique wallet QR code. Please store the wallet QR code to protect the security of the cryptocurrency asset.

Does it support Chinese display?
Users can go to the settings in the gear icon at the bottom of the page, click on the “Display Language” in the basic settings. The current system supports Traditional Chinese, Simplified Chinese, and English display settings. After selecting the language to be displayed, press Save.

How to use MAS Pay wallet to transfer?
Take Bitcoin as an example. Select the wallet to be transferred (if there are multiple wallets with same currency), select the target to be operated from my assets, and go to the page displaying the transfer or collection function. Click the transfer function. After that, please enter the transfer amount and payment address, enter the password when you log in, you will be able to transfer successfully.
At the payment section, after selecting the payment function, the page will display the QR code and wallet address, which can allow the payer to scan the code or receive the wallet address and so on.

Does the APP need to be updated?
We recommend that users check MAS Pay wallet for the latest version from time to time, or click on the gear icon at the bottom of the page and select “Check for Updates” in the account settings to see if there is an updated version to protect personal cryptocurrency assets.

Why are the prices displayed divergently on different platforms?
Just like super-markets and convenient stores, the price of the same item will be different.
Is there any charge for using MAS Pay wallet?
MAS Pay wallet app are free. The only thing that needs to be paid during the use of the wallet is the GAS fee, which is used to pay for miner to process the transaction.
What is mining?
Mining refers to the computing power required to generate blocks through the device through the computer equipment. After the node confirms the transaction and the miner packing block on the main chain, miner will receive cryptocurrency as a reward. This process is called mining.
What is a miner?
The operator who provides the computing power of the computer equipment to carry out mining and thus obtain benefits is the miner.
What is a node?
Each computer or server can become a node*, each node has the opportunity to obtain the billing rights of the block. However, nodes themselves do not have all network accounting information, so they must be connected to each other through the mesh and confirmed transaction by broadcasting, allowing all network nodes to update accounting information at the same time.
*Because transaction information on the network is stored in different computer devices, each computer or device needs to compete with other nodes. When your computing power is better than other nodes, you might have the opportunity to get billing rights of the block.
What is the GAS fee?
For example, when you want to transfer money between different bank accounts, you must pay the commission for the services provided by the bank. Similarly, the miners in the blockchain should package your transactions and put them on the blockchain. While the transaction is completed, and the computational resources of the blockchain are consumed in the process, so the gas fee is paid. The miners prioritize the high-cost miners’ transactions. If the miners paid by the users are very low, the trade may not be packaged by the miners, causing the trade to fail.
What is an address?
For example, just like sending a letter, you need to know the address of the other party to send the letter. The address of cryptocurrency is the address of the user receiving the currency. If you need to trade, you have to know the address before you do transactions.
What is Stablecoin (USDT)?
USDT is a token based on the stable value about US Dollar (USD) launched by Tether, Tether USD (USDT for short), 1 USDT = 1 USD, and the USDT is issued and traded using the Omni protocol, which is a bit based currency blockchain 2.0. The USDT’s transaction confirmation and other parameters are consistent with Bitcoin. Users can wire the US dollar to the bank account provided by Tether through SWIFT, or exchange the USDT through the exchange. When redeeming the dollar, the reverse operation can be done. Users can also exchange USDT for bitcoin..
What if the transfer failed, will it cost GAS fee?
As long as the transaction is packaged by the miner, the gas fee will be consumed, but due to packaging failure or block verification failure (including insufficient gas cost, call instruction error, contract execution error, etc.), the miner will be consumed, but the transfer amount will be returned.
Crypto currency asset displayed incorrectly or the asset is missing
Please check if the network signal is stable. You can switch back to the telecommunication network and re-open the app, or cut the wallet address and re-open the app or check if the app is updated to the latest version.
How to check the transaction record?
Users can click on the wallet currency they want to view. Take the Bitcoin wallet as an example. Click BTC Wallet and select the wallet address where you want to view the transaction details, click the option for assets in your assets, and the page will display the transaction record details of all the rollouts, transfers, and failures of the wallet.