diff --git a/web/cashtab/package-lock.json b/web/cashtab/package-lock.json
--- a/web/cashtab/package-lock.json
+++ b/web/cashtab/package-lock.json
@@ -23,6 +23,7 @@
                 "babel-preset-react-app": "^10.0.1",
                 "bfj": "^7.0.2",
                 "bignumber.js": "^9.0.0",
+                "bip39": "^3.0.2",
                 "browserslist": "^4.18.1",
                 "bs58": "^4.0.1",
                 "buffer": "^6.0.3",
diff --git a/web/cashtab/package.json b/web/cashtab/package.json
--- a/web/cashtab/package.json
+++ b/web/cashtab/package.json
@@ -19,6 +19,7 @@
         "babel-preset-react-app": "^10.0.1",
         "bfj": "^7.0.2",
         "bignumber.js": "^9.0.0",
+        "bip39": "^3.0.2",
         "browserslist": "^4.18.1",
         "bs58": "^4.0.1",
         "buffer": "^6.0.3",
diff --git a/web/cashtab/src/hooks/useWallet.js b/web/cashtab/src/hooks/useWallet.js
--- a/web/cashtab/src/hooks/useWallet.js
+++ b/web/cashtab/src/hooks/useWallet.js
@@ -37,6 +37,7 @@
 import { ChronikClient } from 'chronik-client';
 // For XEC, eCash chain:
 const chronik = new ChronikClient(currency.chronikUrl);
+import * as bip39 from 'bip39';
 
 const useWallet = () => {
     const [walletRefreshInterval, setWalletRefreshInterval] = useState(
@@ -371,6 +372,15 @@
         const mnemonic = wallet.mnemonic;
         const rootSeedBuffer = await BCH.Mnemonic.toSeed(mnemonic);
 
+        // temporary comparison
+        const localRootSeedBufffer = await bip39.mnemonicToSeed(mnemonic, '');
+        if (
+            JSON.stringify(rootSeedBuffer) ===
+            JSON.stringify(localRootSeedBufffer)
+        ) {
+            console.log('mnemonicToSeed() output match');
+        }
+
         const masterHDNode = BCH.HDNode.fromSeed(rootSeedBuffer);
 
         const Path245 = await deriveAccount(BCH, {
@@ -432,6 +442,16 @@
         // Since this info is in localforage now, only get the var
         const mnemonic = wallet.mnemonic;
         const rootSeedBuffer = await BCH.Mnemonic.toSeed(mnemonic);
+
+        // temporary comparison
+        const localRootSeedBufffer = await bip39.mnemonicToSeed(mnemonic, '');
+        if (
+            JSON.stringify(rootSeedBuffer) ===
+            JSON.stringify(localRootSeedBufffer)
+        ) {
+            console.log('mnemonicToSeed() output match');
+        }
+
         const masterHDNode = BCH.HDNode.fromSeed(rootSeedBuffer);
 
         const Path245 = await deriveAccount(BCH, {