diff --git a/package.json b/package.json
index 1914651..48a79a6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bnc-notify",
-  "version": "1.9.2",
+  "version": "1.9.2-0.0.1",
   "description": "Show web3 users realtime transaction notifications",
   "keywords": [
     "ethereum",
@@ -50,7 +50,7 @@
   },
   "dependencies": {
     "bignumber.js": "^9.0.0",
-    "bnc-sdk": "^3.5.0",
+    "bnc-sdk": "4.0.0",
     "lodash.debounce": "^4.0.8",
     "regenerator-runtime": "^0.13.3",
     "uuid": "^3.3.3"
diff --git a/src/notifications.ts b/src/notifications.ts
index 68f2b6a..57ae631 100644
--- a/src/notifications.ts
+++ b/src/notifications.ts
@@ -41,7 +41,7 @@ function createBitcoinNotificationObject(
     outputs
   } = transactionDetails
   const type: NotificationType = eventToType(eventCode)
-  const key = `${id}-${
+  const key = `${id || txid}-${
     (typeof customization === 'object' && customization.eventCode) || eventCode
   }`
 
@@ -121,7 +121,7 @@ function createEthereumNotificationObject(
   } = transactionDetails
 
   const type: NotificationType = eventToType(eventCode)
-  const key = `${id}-${
+  const key = `${id || hash}-${
     (typeof customization === 'object' && customization.eventCode) || eventCode
   }`
   const counterpartyShortened: string | undefined =
diff --git a/src/transactions.ts b/src/transactions.ts
index 4bc67d7..35ca539 100644
--- a/src/transactions.ts
+++ b/src/transactions.ts
@@ -70,22 +70,35 @@ export function handlePreFlightEvent(
 
 export function handleTransactionEvent(event) {
   const { transaction, emitterResult } = event
-
-  if (!transaction.id) {
-    transaction.id = transaction.hash || transaction.txid
+  const currentId = transaction.id
+  const transactionId = transaction.hash || transaction.txid
+
+  // returns a boolean indicating whether this transaction state is a new state
+  // for an existing transaction or is a new transaction
+  const predicate = (txInState: TransactionData) => {
+    return (
+      (txInState.id && txInState.id === currentId) ||
+      txInState.hash === transaction.hash ||
+      txInState.replaceHash === transaction.hash
+    )
   }
 
-  const predicate = (tx: TransactionData) => {
-    return transaction.replaceHash
-      ? tx.id === transaction.replaceHash || tx.hash === transaction.replaceHash
-      : tx.id === transaction.id || tx.hash === transaction.hash
+  // replace UUID used for pre-hash identitification with hash or txid(bitcoin)
+  if (
+    (transactionId &&
+      transactionId !== currentId &&
+      transaction.eventCode === 'txSent') ||
+    !currentId
+  ) {
+    transaction.id = transactionId
   }
 
   transactions.updateQueue(transaction, predicate)
 
-  // update notification id if replaced
   if (transaction.replaceHash) {
-    notifications.updateId(transaction.replaceHash, transaction.hash)
+    // remove pending notification for replaceHash if exists,
+    // this happens is pending comes before speedup event
+    notifications.remove(transaction.replaceHash, 'txPool')
   }
 
   // create notification if dev hasn't opted out and not connected to a local network
diff --git a/yarn.lock b/yarn.lock
index 22307ce..03910bc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2175,10 +2175,10 @@ binary-extensions@^2.0.0:
   resolved "https://registry.yarnpkg.com/binary-extensions/-/binary-extensions-2.1.0.tgz#30fa40c9e7fe07dbc895678cd287024dea241dd9"
   integrity sha512-1Yj8h9Q+QDF5FzhMs/c9+6UntbD5MkRfRwac8DoEm9ZfUBZ7tZ55YcGVAzEe4bXsdQHEk+s9S5wsOKVdZrw0tQ==
 
-bnc-sdk@^3.5.0:
-  version "3.5.0"
-  resolved "https://registry.yarnpkg.com/bnc-sdk/-/bnc-sdk-3.5.0.tgz#b863a2d947857d87c56d53261bd43529f1a5c03e"
-  integrity sha512-4CSon8xRTjtD7YOUDJcyqZ/bKCNNwDc4sOPq6O19AlolYTsbbVvh+p5EOmYqL4Re30hI3lKQxN4sh12A6VnAPQ==
+bnc-sdk@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/bnc-sdk/-/bnc-sdk-4.0.0.tgz#0bf8af5c7c3fab7912912431e1af0e48e01b608b"
+  integrity sha512-ob0GP1dS2yGvV+2hpJgpmrJeen0W68K4jsfjikbuL7ogBAVaQaWbPAzKw2w9tgq9BUM96CR43UpAobSyTZDx7g==
   dependencies:
     crypto-es "^1.2.2"
     rxjs "^6.6.3"