diff --git a/src/common/plugin/types.ts b/src/common/plugin/types.ts
index dbc6f3bf..416982f8 100644
--- a/src/common/plugin/types.ts
+++ b/src/common/plugin/types.ts
@@ -204,6 +204,12 @@ export interface CoinInfo {
    */
   sighash?: number
 
+  /**
+   * Optional transaction locktime value for currencies that use nLockTime as
+   * an opt-in replay-protection mechanism.
+   */
+  replayProtectionLocktime?: number
+
   /**
    * A function to be passed to AltcoinJS `signInput` method. This is used to
    * get the input hash for the signature algorithm before signing the input.
diff --git a/src/common/utxobased/info/all.ts b/src/common/utxobased/info/all.ts
index 67837cfd..98fdf667 100644
--- a/src/common/utxobased/info/all.ts
+++ b/src/common/utxobased/info/all.ts
@@ -2,6 +2,7 @@ import { info as badcoin } from './badcoin'
 import { info as bitcoin } from './bitcoin'
 import { info as bitcoincash } from './bitcoincash'
 import { info as bitcoincashtestnet } from './bitcoincashtestnet'
+import { info as bitcoinecash } from './bitcoinecash'
 import { info as bitcoingold } from './bitcoingold'
 import { info as bitcoingoldtestnet } from './bitcoingoldtestnet'
 import { info as bitcoinsv } from './bitcoinsv'
@@ -27,6 +28,7 @@ export { info as badcoin } from './badcoin'
 export { info as bitcoin } from './bitcoin'
 export { info as bitcoincash } from './bitcoincash'
 export { info as bitcoincashtestnet } from './bitcoincashtestnet'
+export { info as bitcoinecash } from './bitcoinecash'
 export { info as bitcoingold } from './bitcoingold'
 export { info as bitcoingoldtestnet } from './bitcoingoldtestnet'
 export { info as bitcoinsv } from './bitcoinsv'
@@ -53,6 +55,7 @@ export const all = [
   bitcoin,
   bitcoincash,
   bitcoincashtestnet,
+  bitcoinecash,
   bitcoingold,
   bitcoingoldtestnet,
   bitcoinsv,
diff --git a/src/common/utxobased/info/bitcoin.ts b/src/common/utxobased/info/bitcoin.ts
index abc5cde0..78dd1bf4 100644
--- a/src/common/utxobased/info/bitcoin.ts
+++ b/src/common/utxobased/info/bitcoin.ts
@@ -62,7 +62,7 @@ const engineInfo: EngineInfo = {
     }
   ],
   formats: ['bip49', 'bip84', 'bip44', 'bip32'],
-  forks: ['bitcoincash', 'bitcoingold'],
+  forks: ['bitcoincash', 'bitcoingold', 'bitcoinecash'],
   gapLimit: 25,
   feeUpdateInterval: 60000,
   mempoolSpaceFeeInfoServer: 'https://mempool.space/api/v1/fees/recommended',
diff --git a/src/common/utxobased/info/bitcoinecash.ts b/src/common/utxobased/info/bitcoinecash.ts
new file mode 100644
index 00000000..26508d4b
--- /dev/null
+++ b/src/common/utxobased/info/bitcoinecash.ts
@@ -0,0 +1,89 @@
+import { EdgeCurrencyInfo } from 'edge-core-js/types'
+
+import { CoinInfo, EngineInfo, PluginInfo } from '../../plugin/types'
+import { maximumFeeRateCalculator } from '../../plugin/util/maximumFeeRateCalculator'
+import {
+  legacyMemoInfo,
+  utxoCustomFeeTemplate,
+  utxoMemoOptions
+} from './commonInfo'
+
+const currencyInfo: EdgeCurrencyInfo = {
+  assetDisplayName: 'eCash',
+  canReplaceByFee: true,
+  chainDisplayName: 'eCash',
+  currencyCode: 'ECX',
+  customFeeTemplate: utxoCustomFeeTemplate,
+  memoOptions: utxoMemoOptions,
+  pluginId: 'bitcoinecash',
+  walletType: 'wallet:bitcoinecash',
+
+  // Explorers:
+  blockExplorer: 'https://explorer.ecash.com/block/%s',
+  addressExplorer: 'https://explorer.ecash.com/address/%s',
+  transactionExplorer: 'https://explorer.ecash.com/tx/%s',
+
+  denominations: [
+    { name: 'ECX', multiplier: '100000000', symbol: 'e' },
+    { name: 'sats', multiplier: '1', symbol: 's' }
+  ],
+
+  // Deprecated:
+  ...legacyMemoInfo,
+  defaultSettings: {
+    customFeeSettings: ['satPerByte'],
+    blockbookServers: [],
+    enableCustomServers: false
+  },
+  displayName: 'eCash',
+  metaTokens: []
+}
+
+const engineInfo: EngineInfo = {
+  formats: ['bip49', 'bip84', 'bip44', 'bip32'],
+  gapLimit: 25,
+  feeUpdateInterval: 60000,
+  defaultFeeInfo: {
+    lowFeeFudgeFactor: undefined,
+    standardFeeLowFudgeFactor: undefined,
+    standardFeeHighFudgeFactor: undefined,
+    highFeeFudgeFactor: undefined,
+
+    highFee: '150',
+    lowFee: '20',
+    standardFeeLow: '50',
+    standardFeeHigh: '100',
+    standardFeeLowAmount: '173200',
+    standardFeeHighAmount: '8670000',
+    maximumFeeRate: maximumFeeRateCalculator(currencyInfo, 1)
+  }
+}
+
+export const coinInfo: CoinInfo = {
+  name: 'bitcoinecash',
+  segwit: true,
+  coinType: 0,
+
+  // Official pre-launch/drynet4 replay-protection params must be reverified before go-live.
+  replayProtectionLocktime: 499999999,
+
+  prefixes: {
+    messagePrefix: ['\x18Bitcoin Signed Message:\n'],
+    wif: [0x80],
+    legacyXPriv: [0x0488ade4],
+    legacyXPub: [0x0488b21e],
+    wrappedSegwitXPriv: [0x049d7878],
+    wrappedSegwitXPub: [0x049d7cb2],
+    segwitXPriv: [0x04b2430c],
+    segwitXPub: [0x04b24746],
+    pubkeyHash: [0x00],
+    scriptHash: [0x05],
+    bech32: ['bc']
+  }
+}
+
+export const info: PluginInfo = {
+  currencyInfo,
+  engineInfo,
+  coinInfo
+}
diff --git a/src/common/utxobased/keymanager/keymanager.ts b/src/common/utxobased/keymanager/keymanager.ts
index ef5600e6..f8c33dbe 100644
--- a/src/common/utxobased/keymanager/keymanager.ts
+++ b/src/common/utxobased/keymanager/keymanager.ts
@@ -1005,14 +1005,17 @@ export function signMessageBase64(
 
 export function makeTx(args: MakeTxArgs): MakeTxReturn {
   const { log, outputSort, memos, memoIndex } = args
+  const coin = getCoinFromString(args.coin)
+  const replayProtectionLocktime = coin.replayProtectionLocktime
   let sequence = 0xffffffff
   if (args.enableRbf) {
     sequence -= 2
+  } else if (replayProtectionLocktime != null) {
+    sequence = 0xfffffffe
   }
 
   // get coin specific replay protection sighhash bits
   let sighashType = Transaction.SIGHASH_ALL
-  const coin = getCoinFromString(args.coin)
   if (coin.sighash != null) {
     sighashType = coin.sighash
   }
@@ -1169,6 +1172,9 @@ export function makeTx(args: MakeTxArgs): MakeTxReturn {
 
   const psbt = new Psbt()
   try {
+    if (replayProtectionLocktime != null) {
+      psbt.setLocktime(replayProtectionLocktime)
+    }
     psbt.addInputs(sortedInputs)
     psbt.addOutputs(sortedOutputs)
   } catch (error) {
diff --git a/test/common/plugin/CurrencyPlugin.fixtures/currencies/bitcoin.ts b/test/common/plugin/CurrencyPlugin.fixtures/currencies/bitcoin.ts
index 58efefd7..d5b01860 100644
--- a/test/common/plugin/CurrencyPlugin.fixtures/currencies/bitcoin.ts
+++ b/test/common/plugin/CurrencyPlugin.fixtures/currencies/bitcoin.ts
@@ -297,9 +297,9 @@ export const bitcoin: FixtureType = {
     ]
   },
   getSplittableTypes: {
-    bip32: ['wallet:bitcoincash', 'wallet:bitcoingold'],
-    bip44: ['wallet:bitcoincash', 'wallet:bitcoingold'],
-    bip49: ['wallet:bitcoingold'],
-    bip84: ['wallet:bitcoingold']
+    bip32: ['wallet:bitcoincash', 'wallet:bitcoingold', 'wallet:bitcoinecash'],
+    bip44: ['wallet:bitcoincash', 'wallet:bitcoingold', 'wallet:bitcoinecash'],
+    bip49: ['wallet:bitcoingold', 'wallet:bitcoinecash'],
+    bip84: ['wallet:bitcoingold', 'wallet:bitcoinecash']
   }
 }
diff --git a/test/common/plugin/CurrencyPlugin.fixtures/currencies/bitcoinecash.ts b/test/common/plugin/CurrencyPlugin.fixtures/currencies/bitcoinecash.ts
new file mode 100644
index 00000000..8810e2a8
--- /dev/null
+++ b/test/common/plugin/CurrencyPlugin.fixtures/currencies/bitcoinecash.ts
@@ -0,0 +1,77 @@
+import { FixtureType, key, mnemonics } from '../common'
+
+export const bitcoinecash: FixtureType = {
+  pluginId: 'bitcoinecash',
+  WALLET_TYPE: 'wallet:bitcoinecash',
+  WALLET_FORMAT: 'bip32',
+  'Test Currency code': 'ECX',
+  key,
+  xpub:
+    'xpub69FqMgncSEcrs989ejBWTBBcDNFDqkwEd7y53pVeXm8368TNfb9jCd2ne3ccpx9vvgBdpv79Edc69i2Q69kXtrdmLcQM8seffnCXzwzvWa6',
+  'invalid key name': {
+    id: 'unknown',
+    type: 'wallet:bitcoinecash',
+    keys: { bitcoinecashKeyz: '12345678abcd' }
+  },
+  'invalid wallet type': {
+    id: 'unknown',
+    type: 'shitcoin',
+    keys: { bitcoinecashKeyz: '12345678abcd' }
+  },
+  importKey: {
+    validKeys: [...mnemonics],
+    invalidKeys: [
+      ...mnemonics.map(mnemonic => mnemonic.split(' ').slice(1).join(' ')),
+      'bunch of garbly gook !@#$%^&*()'
+    ],
+    unsupportedKeys: []
+  },
+  parseUri: {
+    'address only': [
+      '1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX',
+      {
+        publicAddress: '1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX',
+        metadata: {}
+      }
+    ],
+    'bech32 address only': [
+      'bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4',
+      {
+        publicAddress: 'bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4',
+        metadata: {}
+      }
+    ],
+    'uri address with amount': [
+      'bitcoinecash:1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX?amount=1.23',
+      {
+        publicAddress: '1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX',
+        metadata: {},
+        nativeAmount: '123000000',
+        currencyCode: 'ECX'
+      }
+    ],
+    'bitcoin uri protocol rejected': [
+      'bitcoin:1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX'
+    ]
+  },
+  encodeUri: {
+    'address only': [
+      { publicAddress: '1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX' },
+      '1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX'
+    ],
+    'address & amount': [
+      {
+        publicAddress: '1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX',
+        nativeAmount: '123000000'
+      },
+      'bitcoinecash:1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX?amount=1.23'
+    ],
+    'invalid currencyCode': [
+      {
+        publicAddress: '1F1tAaz5x1HUXrCNLbtMDqcw6o5GNn4xqX',
+        nativeAmount: '123000000',
+        currencyCode: 'INVALID'
+      }
+    ]
+  }
+}
diff --git a/test/common/plugin/CurrencyPlugin.fixtures/index.ts b/test/common/plugin/CurrencyPlugin.fixtures/index.ts
index 3090aebc..7a8184d0 100644
--- a/test/common/plugin/CurrencyPlugin.fixtures/index.ts
+++ b/test/common/plugin/CurrencyPlugin.fixtures/index.ts
@@ -1,6 +1,7 @@
 import { FixtureType } from './common'
 import { bitcoin } from './currencies/bitcoin'
 import { bitcoincash } from './currencies/bitcoincash'
+import { bitcoinecash } from './currencies/bitcoinecash'
 import { bitcoinsv } from './currencies/bitcoinsv'
 import { digibyte } from './currencies/digibyte'
 import { ecash } from './currencies/ecash'
@@ -13,6 +14,7 @@ import { zcoin } from './currencies/zcoin'
 export const fixtures: FixtureType[] = [
   bitcoin,
   bitcoincash,
+  bitcoinecash,
   bitcoinsv,
   digibyte,
   ecash,
diff --git a/test/common/plugin/Metadata.spec.ts b/test/common/plugin/Metadata.spec.ts
index c7239878..3f0bb4b9 100644
--- a/test/common/plugin/Metadata.spec.ts
+++ b/test/common/plugin/Metadata.spec.ts
@@ -9,6 +9,7 @@ import {
   EngineEvent
 } from '../../../src/common/plugin/EngineEmitter'
 import { makeMetadata, Metadata } from '../../../src/common/plugin/Metadata'
+import { all } from '../../../src/common/utxobased/info/all'
 import { makeFakeLog } from '../../utils'
 
 chai.should()
@@ -49,3 +50,33 @@ describe('makeMetadata', () => {
     })
   })
 })
+
+describe('currency metadata', () => {
+  it('keeps ECX distinct from XEC', () => {
+    const ecash = all.find(info => info.currencyInfo.pluginId === 'ecash')
+    const bitcoinecash = all.find(
+      info => info.currencyInfo.pluginId === 'bitcoinecash'
+    )
+
+    if (ecash == null || bitcoinecash == null) {
+      throw new Error('Missing eCash plugin metadata')
+    }
+
+    ecash.currencyInfo.walletType.should.equal('wallet:ecash')
+    ecash.currencyInfo.currencyCode.should.equal('XEC')
+    bitcoinecash.currencyInfo.walletType.should.equal('wallet:bitcoinecash')
+    bitcoinecash.currencyInfo.currencyCode.should.equal('ECX')
+    bitcoinecash.coinInfo.coinType.should.equal(0)
+    bitcoinecash.coinInfo.prefixes.pubkeyHash.should.deep.equal([0x00])
+    bitcoinecash.coinInfo.prefixes.scriptHash.should.deep.equal([0x05])
+    bitcoinecash.coinInfo.prefixes.bech32?.should.deep.equal(['bc'])
+  })
+
+  it('has unique plugin IDs and wallet types', () => {
+    const pluginIds = all.map(info => info.currencyInfo.pluginId)
+    const walletTypes = all.map(info => info.currencyInfo.walletType)
+
+    new Set(pluginIds).size.should.equal(pluginIds.length)
+    new Set(walletTypes).size.should.equal(walletTypes.length)
+  })
+})
diff --git a/test/common/utxobased/keymanager/coins/bitcointransactiontest.spec.ts b/test/common/utxobased/keymanager/coins/bitcointransactiontest.spec.ts
index 698d3d82..52dd18b3 100644
--- a/test/common/utxobased/keymanager/coins/bitcointransactiontest.spec.ts
+++ b/test/common/utxobased/keymanager/coins/bitcointransactiontest.spec.ts
@@ -1,8 +1,10 @@
+import { Transaction } from 'altcoin-js'
 import { expect } from 'chai'
 import { describe, it } from 'mocha'
 
 import { UtxoData } from '../../../../../src/common/utxobased/db/types'
 import { info as bitcoin } from '../../../../../src/common/utxobased/info/bitcoin'
+import { info as bitcoinecash } from '../../../../../src/common/utxobased/info/bitcoinecash'
 import {
   addressToScriptPubkey,
   AddressTypeEnum,
@@ -207,6 +209,54 @@ describe('bitcoin transaction creation and signing test', function () {
     )
   })
 
+  it('Create ECX transaction with replay-protection locktime', async () => {
+    const { psbtBase64 } = makeTx({
+      forceUseUtxo: [],
+      coin: 'bitcoinecash',
+      currencyCode: 'ECX',
+      enableRbf: false,
+      freshChangeAddress: '1KRMKfeZcmosxALVYESdPNez1AP1mEtywp',
+      feeRate: 0,
+      subtractFee: false,
+      utxos: [
+        {
+          id: '0',
+          scriptType: ScriptTypeEnum.p2pkh,
+          txid:
+            '7d067b4a697a09d2c3cff7d4d9506c9955e93bff41bf82d439da7d030382bc3e',
+          scriptPubkey,
+          value: '80000',
+          blockHeight: 0,
+          spent: false,
+          script:
+            '0200000001f9f34e95b9d5c8abcd20fc5bd4a825d1517be62f0f775e5f36da944d9' +
+            '452e550000000006b483045022100c86e9a111afc90f64b4904bd609e9eaed80d48' +
+            'ca17c162b1aca0a788ac3526f002207bb79b60d4fc6526329bf18a77135dc566020' +
+            '9e761da46e1c2f1152ec013215801210211755115eabf846720f5cb18f248666fec' +
+            '631e5e1e66009ce3710ceea5b1ad13ffffffff01' +
+            '905f010000000000' +
+            '19' +
+            scriptPubkey +
+            '00000000',
+          vout: 0
+        }
+      ],
+      targets: [],
+      memos: [],
+      outputSort: 'bip69'
+    })
+    const signedTx = await signTx({
+      coin: 'bitcoinecash',
+      feeInfo: bitcoinecash.engineInfo.defaultFeeInfo,
+      privateKeyEncodings: [privateKeyEncoding],
+      psbtBase64
+    })
+    const tx = Transaction.fromHex(signedTx.hex)
+
+    expect(tx.locktime).to.equal(499999999)
+    expect(tx.ins[0].sequence).to.equal(0xfffffffe)
+  })
+
   it('Create transaction three outputs using bip69 outputSort', async () => {
     /*
       This here is the rawtransaction as assembled below: