Off-ramp to UMA

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Getting Started with UMA

1. Sign Up for a Test UMA Address

   Visit spark.info/uma to create your test UMA account.

2. Look Up UMA Address Information

   Before sending a payment, you can look up supported currencies and payment limits:

   const umaAddress = "$yourname@uma.me"; // Your UMA address from spark.info/uma
   
   // Get supported currencies and payment limits
   const umaInfo = await sparkWallet.umaAddressLookup(umaAddress);
   console.log("Supported currencies:", umaInfo.currencies);
   console.log("Min sendable:", umaInfo.min_sendable_sats);
   console.log("Max sendable:", umaInfo.max_sendable_sats);
   

3. Send Funds to Your UMA

   You can now send payments in specific currencies:

   // Create a payment request in USD
   const paymentRequest = await sparkWallet.umaPayRequest(
     umaInfo.callback_id,
     "USD",
     BigInt(1000)  // Amount in the specified currency, i.e. 10.00 USD
   );
   
   // Pay the invoice
   const payment = await sparkWallet.payLightningInvoice(
     paymentRequest.encoded_invoice
   );
   console.log("Payment status:", payment.status);
   

4. Verify Your Transaction

   Visit spark.info/uma to verify that your funds have arrived.

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Next Steps

Now that you know how to off-ramp your funds with UMA, check out the Cooperative Exit guide to learn how to exit your Bitcoin from the Spark wallet.