Merge pull request #190 from breez/ok300-yse-fix-fee-estimation

Use P2TR address as destination when estimating fees

lib/core/src/sdk.rs

@@ -397,8 +397,16 @@ impl LiquidSdk {
     }
 
     fn get_broadcast_fee_estimation(&self, amount_sat: u64) -> Result<u64> {
+        // TODO Replace this with own address when LWK supports taproot
+        //  https://github.com/Blockstream/lwk/issues/31
+        let temp_p2tr_addr = match self.network {
+            Network::Liquid => "lq1pqvzxvqhrf54dd4sny4cag7497pe38252qefk46t92frs7us8r80ja9ha8r5me09nn22m4tmdqp5p4wafq3s59cql3v9n45t5trwtxrmxfsyxjnstkctj",
+            Network::LiquidTestnet => "tlq1pq0wqu32e2xacxeyps22x8gjre4qk3u6r70pj4r62hzczxeyz8x3yxucrpn79zy28plc4x37aaf33kwt6dz2nn6gtkya6h02mwpzy4eh69zzexq7cf5y5"
+        };
+
+        // Create a throw-away tx similar to the lockup tx, in order to estimate fees
         Ok(self
-            .build_tx(None, &self.address()?.to_string(), amount_sat)?
+            .build_tx(None, temp_p2tr_addr, amount_sat)?
             .all_fees()
             .values()
             .sum())