fix(wasm-utxo): display txid as string instead of reversed bytes

Change txid representation from buffer to string format in PSBT
inspection. Previously, txids were displayed as byte arrays in
reverse order.

Affects txid, ntxid, wtxid, prev_txid, and non_witness_utxo fields.

Issue: BTC-0

Co-authored-by: llm-git <llm-git@ttll.de>

Author: OttoAllmendinger

packages/wasm-utxo/src/inspect/psbt.rs

@@ -1,7 +1,6 @@
 /// This contains low-level parsing of PSBT into a node structure suitable for display
 use crate::address::from_output_script_with_network;
 use crate::bitcoin::consensus::Decodable;
-use crate::bitcoin::hashes::Hash;
 use crate::bitcoin::psbt::Psbt;
 use crate::bitcoin::{ScriptBuf, Transaction};
 use crate::fixed_script_wallet::bitgo_psbt::{
@@ -250,7 +249,7 @@ fn tx_input_to_node(input: &crate::bitcoin::TxIn, index: usize) -> Node {
 
     input_node.add_child(Node::new(
         "prev_txid",
-        Primitive::Buffer(input.previous_output.txid.to_byte_array().to_vec()),
+        Primitive::String(input.previous_output.txid.to_string()),
     ));
     input_node.add_child(Node::new(
         "prev_vout",
@@ -325,7 +324,7 @@ fn psbt_input_to_node(input: &crate::bitcoin::psbt::Input, index: usize, network
     if let Some(utxo) = &input.non_witness_utxo {
         input_node.add_child(Node::new(
             "non_witness_utxo",
-            Primitive::Buffer(utxo.compute_txid().to_byte_array().to_vec()),
+            Primitive::String(utxo.compute_txid().to_string()),
         ));
     }
 
@@ -483,15 +482,15 @@ pub fn tx_to_node(tx: &Transaction, network: Network) -> Node {
     ));
     tx_node.add_child(Node::new(
         "txid",
-        Primitive::Buffer(tx.compute_txid().to_byte_array().to_vec()),
+        Primitive::String(tx.compute_txid().to_string()),
     ));
     tx_node.add_child(Node::new(
         "ntxid",
-        Primitive::Buffer(tx.compute_ntxid().to_byte_array().to_vec()),
+        Primitive::String(tx.compute_ntxid().to_string()),
     ));
     tx_node.add_child(Node::new(
         "wtxid",
-        Primitive::Buffer(tx.compute_wtxid().to_byte_array().to_vec()),
+        Primitive::String(tx.compute_wtxid().to_string()),
     ));
     tx_node.add_child(tx_inputs_to_node(&tx.input));
     tx_node.add_child(tx_outputs_to_node(&tx.output, network));
@@ -529,15 +528,15 @@ pub fn zcash_tx_to_node(parts: &ZcashTransactionParts, network: Network) -> Node
     ));
     tx_node.add_child(Node::new(
         "txid",
-        Primitive::Buffer(tx.compute_txid().to_byte_array().to_vec()),
+        Primitive::String(tx.compute_txid().to_string()),
     ));
     tx_node.add_child(Node::new(
         "ntxid",
-        Primitive::Buffer(tx.compute_ntxid().to_byte_array().to_vec()),
+        Primitive::String(tx.compute_ntxid().to_string()),
     ));
     tx_node.add_child(Node::new(
         "wtxid",
-        Primitive::Buffer(tx.compute_wtxid().to_byte_array().to_vec()),
+        Primitive::String(tx.compute_wtxid().to_string()),
     ));
     tx_node.add_child(tx_inputs_to_node(&tx.input));
     tx_node.add_child(tx_outputs_to_node(&tx.output, network));