Quote display and user preferences

Input

To chose a swap service, the user selects:

1. A source cryptocurrency and a source account
2. An amount from the source account to swap
3. The destination cryptocurrency and the destination account

Output

According to the input amount, the partner’s API is called to get a quote and check several conditions:

• Region (AVAILABLE / NOT AVAILABLE)
• Token (AVAILABLE / NOT AVAILABLE)
• Amount (TOO LOW / TOO HIGH)

If all of the above conditions are validated, the partners are displayed in Ledger Live with the following information. Between several CEX offers, amountFrom and network fee being the same, quotes are sorted by amount to, the first “best value” quote being the one offering the greatest Receiving amount:

1. Network fees to send crypto to partners - payinNetworkFees
2. Partner quote
   • a. Partner image
   • b. Partner name
   • c. Registration policy of the partner : Needed / Not needed
   • d. Exchange rate of the current swap, after all fees are applied: ex : 1 ETH = 0.0549919 BTC
   • e. Fixed or Floating: When it is fixed, the quote is guaranteed. The user must accept the quote within a certain amount of time (the quote must be guaranteed for at least 60 seconds). When it is floating, the quote is not guaranteed. The user can receive less than the quote according to the market fluctuation but should be protected against a maximum slippage defined by the partner
   • f. Receiving amount: ex = want to Swap 0.04301 ETH, receiving 0.0023652 BTC
     • Quote calculation : {Swap rate output}* (1 - Ledger Fee - Partner fee) - Withdrawal fee. With:
     • - Swap rate output: Rate provided by partner
     • - Withdrawal fee : Paid by the user to cover gas from the Partner to Ledger
     • - Ledger fee : fee to be paid to Ledger
     • - Partner fee: fee taken by the partner

     Fees for sending the transaction payinNetworkFees (from Ledger to the partner) are not included in the displayed quote

   • g. time out = 5s. partner must reply in less that 5s, otherwise the quote is not displayed in the quote results. The user needs to trigger a quote again, or wait for timeout

User Preferences

The user can use filters and and change the network fee strategy to find the swap service fit to their need and preferences.

Fees

The user can change network fees according to the speed of the transaction:

• Slow
• Medium
• Fast