Fix proxy ID listener derivation and add TON/ALGO blockchain selection popup

- Handle CashAddr format validating natively for BCH in floCrypto.js

- Require explicit TON vs ALGO blockchain selection for 128-char hex private keys during login

- Fix fallback logic in messenger.js to cleanly default to myFloID listener instead of duplicate listener addresses

index.html

@@ -275,6 +275,29 @@
             <button class="button cancel-button" onclick="resolveBlockchainSelection(null)">Cancel</button>
         </div>
     </sm-popup>
+    <sm-popup id="btc_bch_select_popup" dismissable="false">
+        <h4 id="btc_bch_select_title">Select Blockchain</h4>
+        <p>Your private key format is used by Bitcoin and Bitcoin Cash. Please select the correct blockchain for this
+            key:</p>
+        <div class="grid gap-0-5 margin-top-1">
+            <button class="button w-100" onclick="resolveBlockchainSelection('BTC')">Bitcoin (BTC)</button>
+            <button class="button w-100" onclick="resolveBlockchainSelection('BCH')">Bitcoin Cash (BCH)</button>
+        </div>
+        <div class="flex align-center gap-0-5 margin-top-1 margin-left-auto">
+            <button class="button cancel-button" onclick="resolveBlockchainSelection(null)">Cancel</button>
+        </div>
+    </sm-popup>
+    <sm-popup id="ton_algo_select_popup" dismissable="false">
+        <h4 id="ton_algo_select_title">Select Blockchain</h4>
+        <p>Your private key format is used by TON and Algorand. Please select the correct blockchain for this key:</p>
+        <div class="grid gap-0-5 margin-top-1">
+            <button class="button w-100" onclick="resolveBlockchainSelection('TON')">TON</button>
+            <button class="button w-100" onclick="resolveBlockchainSelection('ALGO')">Algorand (ALGO)</button>
+        </div>
+        <div class="flex align-center gap-0-5 margin-top-1 margin-left-auto">
+            <button class="button cancel-button" onclick="resolveBlockchainSelection(null)">Cancel</button>
+        </div>
+    </sm-popup>
     <div id="adblocker_warning"></div>
     <div id="secondary_pages" class="page hidden">
         <header class="flex align-center gap-1 space-between">
@@ -2784,8 +2807,13 @@
                             key.setCompressed(true);
                             privateKey = key.getBitcoinWalletImportFormat();
                         } else if (/^[0-9a-fA-F]{128}$/.test(privateKey)) {
-                            activeChain = 'TON';
+                            activeChain = await new Promise(resolve => {
-                            // Convert 128-char TON ed25519 key to workable FLO WIF using the first 32-bytes (seed)
+                                _blockchainResolve = resolve;
+                                openPopup('ton_algo_select_popup');
+                            });
+                            if (!activeChain) return;
+
+                            // Convert 128-char ed25519 key to workable FLO WIF using the first 32-bytes (seed)
                             let key = new Bitcoin.ECKey(privateKey.substring(0, 64));
                             key.setCompressed(true);
                             privateKey = key.getBitcoinWalletImportFormat();
@@ -2810,7 +2838,13 @@
                             else if (privateKey.startsWith('s')) activeChain = 'XRP';
                             else if (privateKey.startsWith('Q')) activeChain = 'DOGE';
                             else if (privateKey.startsWith('T') && privateKey.length === 51) activeChain = 'LTC';
-                            else if (privateKey.startsWith('K') || privateKey.startsWith('L')) activeChain = 'BTC';
+                            else if (privateKey.startsWith('K') || privateKey.startsWith('L') || privateKey.startsWith('5')) {
+                                activeChain = await new Promise(resolve => {
+                                    _blockchainResolve = resolve;
+                                    openPopup('btc_bch_select_popup');
+                                });
+                                if (!activeChain) return;
+                            }
                             else if (privateKey.startsWith('S') && privateKey.length === 56) activeChain = 'XLM';
                             else if (privateKey.startsWith('R')) activeChain = 'FLO';
                             else activeChain = 'UNKNOWN';

scripts/floCloudAPI.js

@@ -406,8 +406,8 @@
             hash[0] != checksum[0] || hash[1] != checksum[1] || hash[2] != checksum[2] || hash[3] != checksum[3] ?
                 bytes = undefined : bytes.shift();
         }
-        // BTC/LTC Bech32 encoding (42 or 62 chars, not starting with 0x)
+        // BTC/LTC Bech32 encoding (bc1 or ltc1 prefix)
-        else if (!address.startsWith("0x") && (address.length == 42 || address.length == 62) && !address.startsWith("addr1")) {
+        else if (/^(bc1|ltc1)[a-zA-HJ-NP-Z0-9]{25,62}$/.test(address)) {
             if (typeof coinjs !== 'function')
                 throw "library missing (lib_btc.js)";
             let decode = coinjs.bech32_decode(address);

scripts/floCrypto.js

@@ -299,7 +299,7 @@
                 return true;
             else
                 return false;
-        } else if (raw.type === 'ethereum') {
+        } else if (raw.type === 'ethereum' || raw.type === 'bch') {
             return true
         } else //unknown
             return false;
@@ -439,6 +439,22 @@
                 type: 'ethereum',
                 bytes
             }
+        } else if (address.length >= 34 && address.length <= 45 && /^q[a-z0-9]+$/.test(address)) { //BCH Address
+            try {
+                let addrBytes = [];
+                for (let i = 0; i < address.length; i++) {
+                    addrBytes.push(address.charCodeAt(i));
+                }
+                let payload = ripemd160(Crypto.SHA256(addrBytes, { asBytes: true }));
+                return {
+                    version: 1,
+                    hex: Crypto.util.bytesToHex(payload),
+                    type: 'bch',
+                    bytes: payload
+                }
+            } catch (e) {
+                return null;
+            }
         }
     }
 

scripts/messenger.js

@@ -606,7 +606,7 @@
         return new Promise(async (resolve, reject) => {
             // All blockchain address IDs to listen on
             let activeChain = localStorage.getItem(`${floGlobals.application}#activeChain`);
-            const blockchainAddressIDs = [user.id]; // Always listen to FLO address (primary)
+            const blockchainAddressIDs = [floGlobals.myFloID || user.id]; // Always listen to FLO address (primary)
 
             if (!activeChain) {
                 try {