From ffa19210e07ab8c1feafe3efe97d4b5ac63cb82e Mon Sep 17 00:00:00 2001
From: CalDescent <>
Date: Fri, 6 May 2022 11:43:17 +0100
Subject: [PATCH] Added support for coins with 2 address prefix bytes. Address
 derivation still needs more work for Pirate Chain (Zcash address format)

---
 qortal-ui-crypto/api/bitcoin/AltcoinHDWallet.js | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/qortal-ui-crypto/api/bitcoin/AltcoinHDWallet.js b/qortal-ui-crypto/api/bitcoin/AltcoinHDWallet.js
index 2050c87e..0c7c70f8 100644
--- a/qortal-ui-crypto/api/bitcoin/AltcoinHDWallet.js
+++ b/qortal-ui-crypto/api/bitcoin/AltcoinHDWallet.js
@@ -687,8 +687,14 @@ export default class AltcoinHDWallet {
              * Derive Litecoin Legacy Address
              */
 
-                // Append Address Prefix
-            const k = [this.versionBytes.mainnet.prefix].concat(...this.grandChildPublicKeyHash)
+            // Append Address Prefix
+            let prefix = [this.versionBytes.mainnet.prefix]
+            if (2 == this.versionBytes.mainnet.prefix.length) {
+                prefix = [this.versionBytes.mainnet.prefix[0]]
+                prefix.push([this.versionBytes.mainnet.prefix[1]])
+            }
+
+            const k = prefix.concat(...this.grandChildPublicKeyHash)
 
             // Derive Checksum
             const _addressCheckSum = new Sha256().process(new Sha256().process(new Uint8Array(k)).finish().result).finish().result