User Journey

1. Account Abstraction (AA) Wallet Creation by Using Email

• During Sign Up, the user provides their Email account.

• A smart contract on x0network L3 automatically generates an account abstraction (AA) wallet linked to the user's Email address.

• The AA wallet supports gasless transactions, powered by a paymaster smart contract.

• It features advanced capabilities such as multi-signature and session keys for improved security and usability.

• Users can perform transactions without needing private keys directly, leveraging key management via device, cloud and email.

2. Top Up Crypto

• User imports a source account by providing a private key from their account on Layer 1 (L1) or Layer 2 (L2) external network.

• The private key is imported as a hexadecimal string, adding the new account as the origin of tokens.

• The user taps the imported account to see all token balances owned from all external networks.

• The user chooses a token (the network will also be chosen) from imported account to bridge-in to AA wallet on x0network L3.

• x0pay invokes the auto-bridge smart contract, locking tokens on the chosen network and minting them on x0network L3. This will require small amount of native token on external network for gas fee.

• The bridged tokens are sent to the user’s AA wallet on x0network L3, ready for gasless transactions.

3. Buy Crypto

• Users input the fiat amount they want to transfer and selects the crypto they want to buy.

• x0pay calculates the estimated crypto amount based on the fiat value inputted by the user.

• x0pay displays a destination bank account for the fiat transfer.

• The user makes the fiat transfer using their banking app, sending the amount to the provided bank account.

  For Testnet version, to simulate the payment, please follow the steps:

  1. check your email,

  2. copy your iPayMu ID,

  3. go to https://sandbox.ipaymu.com/notify,

  4. paste the ID to Sandbox Transaction ID,

  5. click Submit button

• Upon successful fiat transfer, the user refreshes their wallet to see the added crypto balance, automatically updated by the system.

4. Send Crypto

• Users can send crypto to another user across x0network L3 by entering an Email address, an AA wallet address, or an EOA address as the recipient.

• x0pay supports sending tokens across the x0network L3, ensuring the transaction is gasless.

• The transaction is initiated without the need for gas fees, thanks to the paymaster smart contract covering the transaction cost.

5. Withdraw Crypto

• The user can withdraw tokens from x0network L3 to an external L1/L2 EVM network.

• User imports a destination account by providing a private key of their account on external network.

• The private key is imported as a hexadecimal string, adding the new account as the destination of token.

• The user taps the imported account to see all token balances owned from all networks.

• The user chooses a token (the network will also be chosen) from their imported account to bridge-out from AA wallet on x0network L3 to the chosen network.

• x0pay invokes the auto-bridge smart contract, burning the token on x0network L3 and unlocking tokens on L1 or L2 .

• The bridged tokens are sent to the user’s external wallet on external network.

6. Crypto-to-Fiat Payment with Merchant Email

• The user initiates a crypto-to-fiat payment by entering the merchant's email.

• Users input the fiat amount they want to pay and selects the crypto they want to convert from.

• x0pay calculates the estimated crypto amount to spend, based on the fiat value inputted by the user.

• Upon submission, the crypto are moved from user's AA wallet to the x0pay hot-wallet on x0network L3.

• An API call is triggered to the payment gateway to transfer fiat to the merchant’s fiat account.

• The merchant receives the fiat disbursement within seconds, completing the crypto-to-fiat transaction.

7. Intelligent Netting - Monitoring Token Price Fluctuations

• x0pay monitors token price fluctuations.

• Real-time price feeds from CEXs and oracles detect volatility. During stable conditions, tokens are kept in the vault.

• Stable Price - Netting On:

  During periods of low volatility, netting is enabled, and tokens are held in the crypto vault, with conversion performed only when necessary.

• High Volatility - Netting Off:

  If significant volatility is detected, netting is deactivated, and tokens are sent to a connected CEX for immediate sale, protecting the token’s value from sudden market changes.