diff --git a/apps/ecash-herald/constants/op_return.js b/apps/ecash-herald/constants/op_return.js
index 3238b16c7..fc089ef5b 100644
--- a/apps/ecash-herald/constants/op_return.js
+++ b/apps/ecash-herald/constants/op_return.js
@@ -1,55 +1,51 @@
 // Copyright (c) 2023 The Bitcoin developers
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 'use strict';
 /**
  * op_return.js
  * Constants related to OP_RETURN script
  * https://en.bitcoin.it/wiki/Script
  */
 module.exports = {
     opReturnPrefix: '6a',
     opReturnAppPrefixLength: '04',
     opPushDataOne: '4c',
-    appPrefixes: {
-        '00746162': 'Cashtab Msg',
-        '2e786563': 'Alias',
-    },
     knownApps: {
         airdrop: { prefix: '64726f70', app: 'Airdrop' },
         cashtabMsg: { prefix: '00746162', app: 'Cashtab Msg' },
         swap: { prefix: '53575000', app: 'SWaP' },
         fusion: { prefix: '46555a00', app: 'Cash Fusion' },
         fusionLegacy: { prefix: '5920070', app: 'Cash Fusion' },
     },
     memo: {
         'prefix': '6d',
         'app': 'memo',
         '01': 'Set name',
         '02': 'Post memo',
         '03': 'Reply to memo',
         '04': 'Like / tip memo',
         '05': 'Set profile text',
         '06': 'Follow user',
         '07': 'Unfollow user',
         '0a': 'Set profile picture',
         '0b': 'Repost memo',
         '0c': 'Post topic message',
         '0d': 'Topic follow',
         '0e': 'Topic unfollow',
         '10': 'Create poll',
         '13': 'Add poll option',
         '14': 'Poll vote',
         '16': 'Mute user',
         '17': 'Unmute user',
         '24': 'Send money',
         '30': 'Sell tokens',
         '31': 'Token buy offer',
         '32': 'Attach token sale signature',
         '35': 'Pin token post',
         '20': 'Link request',
         '21': 'Link accept',
         '22': 'Link revoke',
         '26': 'Set address alias',
     },
 };