diff --git a/src/pages/verify/index.tsx b/src/pages/verify/index.tsx
index de66991..f470b49 100644
--- a/src/pages/verify/index.tsx
+++ b/src/pages/verify/index.tsx
@@ -5,7 +5,13 @@ import { useEffect, useRef, useState } from 'react'
 import { toast } from 'react-toastify'
 import { LoadingSpinner } from '../../components/LoadingSpinner'
 import { NostrController } from '../../controllers'
-import { DocSignatureEvent, Meta } from '../../types'
+import {
+  DocSignatureEvent,
+  Meta,
+  SignedEvent,
+  Timestamp,
+  TimestampUpgradeVerifyResponse
+} from '../../types'
 import {
   decryptArrayBuffer,
   extractMarksFromSignedMeta,
@@ -15,7 +21,10 @@ import {
   parseJson,
   readContentOfZipEntry,
   signEventForMetaFile,
-  getCurrentUserFiles
+  getCurrentUserFiles,
+  updateUsersAppData,
+  npubToHex,
+  sendNotification
 } from '../../utils'
 import styles from './style.module.scss'
 import { useLocation } from 'react-router-dom'
@@ -48,6 +57,12 @@ import {
   faFile,
   faFileDownload
 } from '@fortawesome/free-solid-svg-icons'
+import {
+  upgradeAndVerifyTimestamp,
+  upgradeTimestamps,
+  verifyTimestamps
+} from '../../utils/opentimestamps.ts'
+import _ from 'lodash'
 
 interface PdfViewProps {
   files: CurrentUserFile[]
@@ -180,7 +195,8 @@ export const VerifyPage = () => {
     signers,
     viewers,
     fileHashes,
-    parsedSignatureEvents
+    parsedSignatureEvents,
+    timestamps
   } = useSigitMeta(meta)
 
   const [files, setFiles] = useState<{ [filename: string]: SigitFile }>({})
@@ -190,6 +206,16 @@ export const VerifyPage = () => {
     [key: string]: string | null
   }>({})
 
+  const signTimestampEvent = async (signerContent: {
+    timestamps: Timestamp[]
+  }): Promise<SignedEvent | null> => {
+    return await signEventForMetaFile(
+      JSON.stringify(signerContent),
+      nostrController,
+      setIsLoading
+    )
+  }
+
   useEffect(() => {
     if (Object.entries(files).length > 0) {
       const tmp = getCurrentUserFiles(files, currentFileHashes, fileHashes)
@@ -198,6 +224,89 @@ export const VerifyPage = () => {
   }, [currentFileHashes, fileHashes, files])
 
   useEffect(() => {
+    if (timestamps && timestamps.length > 0) {
+      if (timestamps.every((t) => !!t.verification)) {
+        return
+      }
+      const upgradeT = async (timestamps: Timestamp[]) => {
+        const verifiedResults = await Promise.all(
+          timestamps.map(upgradeAndVerifyTimestamp)
+        )
+
+        const upgradedTimestamps = verifiedResults
+          .filter((t) => t.upgraded || isNewlyVerified(t, timestamps))
+          .map((t) => {
+            const timestamp = t.value
+            if (t.verified) {
+              timestamp.verification = t.verification
+            }
+            return timestamp
+          })
+
+        const isNewlyVerified = (
+          upgradedTimestamp: TimestampUpgradeVerifyResponse,
+          timestamps: Timestamp[]
+        ) => {
+          if (!upgradedTimestamp.verified) return false
+          const oldT = timestamps.find(
+            (t) => t.nostrId === upgradedTimestamp.value.nostrId
+          )
+          if (!oldT) return false
+          if (!oldT.verification && upgradedTimestamp.verified) return true
+        }
+
+        const signedEvent = await signTimestampEvent({
+          timestamps: upgradedTimestamps
+        })
+        if (!signedEvent) return
+
+        const finalTimestamps = timestamps.map((t) => {
+          const upgraded = upgradedTimestamps.find(
+            (tu) => tu.nostrId === t.nostrId
+          )
+          if (upgraded) {
+            return {
+              ...upgraded,
+              signature: JSON.stringify(signedEvent, null, 2)
+            }
+          }
+          return t
+        })
+
+        const updatedMeta = _.cloneDeep(meta)
+        updatedMeta.timestamps = [...finalTimestamps]
+        updatedMeta.modifiedAt = unixNow()
+
+        const updatedEvent = await updateUsersAppData(updatedMeta)
+        if (!updatedEvent) return
+
+        const userSet = new Set<`npub1${string}`>()
+        signers.forEach((signer) => {
+          if (signer !== usersPubkey) {
+            userSet.add(signer)
+          }
+        })
+
+        viewers.forEach((viewer) => {
+          userSet.add(viewer)
+        })
+
+        const users = Array.from(userSet)
+        const promises = users.map((user) =>
+          sendNotification(npubToHex(user)!, updatedMeta)
+        )
+
+        await Promise.all(promises)
+
+        setTimestamps(finalTimestamps)
+        setMeta(meta)
+      }
+      upgradeT(timestamps)
+    }
+  }, [timestamps])
+
+  useEffect(() => {
+    console.log('this runs')
     if (metaInNavState && encryptionKey) {
       const processSigit = async () => {
         setIsLoading(true)
diff --git a/src/types/core.ts b/src/types/core.ts
index ea12271..0216f2a 100644
--- a/src/types/core.ts
+++ b/src/types/core.ts
@@ -43,14 +43,20 @@ export interface Sigit {
 export interface Timestamp {
   nostrId: string
   timestamp: string
-  isComplete?: boolean
+  verification?: TimestampVerification
+  signature?: string
 }
 
-export interface TimestampUpgradeResponse {
+export interface TimestampVerification {
+  height: number
+}
+
+export interface TimestampUpgradeVerifyResponse {
+  value: Timestamp
   upgraded: boolean
-  nostrId: string
-  timestamp: string
-  isComplete: boolean
+  isComplete?: boolean
+  verified?: boolean
+  verification?: TimestampVerification
 }
 
 export interface UserAppData {
diff --git a/src/types/opentimestamps.d.ts b/src/types/opentimestamps.d.ts
index f3398d2..825268d 100644
--- a/src/types/opentimestamps.d.ts
+++ b/src/types/opentimestamps.d.ts
@@ -10,7 +10,10 @@ interface OpenTimestamps {
   stamp(file: any): Promise<void>
 
   // Verify the provided timestamp proof file
-  verify(ots: string, file: string): Promise<void>
+  verify(
+    ots: string,
+    file: string
+  ): Promise<TimestampVerficiationResponse | Record<string, never>>
 
   // Other utilities or operations (like OpSHA256, serialization)
   Ops: {
@@ -28,3 +31,7 @@ interface OpenTimestamps {
   // Other potential methods based on repo functions
   upgrade(file: any): Promise<boolean>
 }
+
+interface TimestampVerficiationResponse {
+  bitcoin: { timestamp: number; height: number }
+}
diff --git a/src/utils/opentimestamps.ts b/src/utils/opentimestamps.ts
index 4cbc036..2af0148 100644
--- a/src/utils/opentimestamps.ts
+++ b/src/utils/opentimestamps.ts
@@ -1,7 +1,13 @@
-import { Timestamp } from '../types'
-import { retry } from './retry.ts'
+import {
+  Timestamp,
+  TimestampUpgradeResponse,
+  TimestampUpgradeVerifyResponse
+} from '../types'
+import { retry, retryAll } from './retry.ts'
 import { bytesToHex } from '@noble/hashes/utils'
 import { utf8Encoder } from 'nostr-tools/utils'
+import { hexStringToUint8Array } from './string.ts'
+import { isPromiseFulfilled } from './utils.ts'
 
 /**
  * Generates a timestamp for the provided nostr event ID.
@@ -21,6 +27,87 @@ export const generateTimestamp = async (
   }
 }
 
+export const upgradeAndVerifyTimestamp = async (
+  timestamp: Timestamp
+): Promise<TimestampUpgradeVerifyResponse> => {
+  const upgradedResult = await retry(() => upgrade(timestamp))
+  const verifiedResult = await verify(upgradedResult)
+
+  console.log('verifiedResult: ', verifiedResult)
+
+  return verifiedResult
+}
+
+export const upgradeTimestamps = async (
+  timestamps: Timestamp[]
+): Promise<TimestampUpgradeResponse[]> => {
+  const resolved = await retryAll(timestamps.map((t) => () => upgrade(t)))
+  return resolved.filter(isPromiseFulfilled).map((res) => res.value)
+}
+
+export const verifyTimestamps = async (timestamps: Timestamp[]) => {
+  const settledResults = await Promise.allSettled(
+    timestamps.map(async (timestamp) => verify(timestamp))
+  )
+  return settledResults.filter(isPromiseFulfilled).map((res) => res.value)
+}
+
+const upgrade = async (
+  t: Timestamp
+): Promise<TimestampUpgradeVerifyResponse> => {
+  let detachedTimestamp =
+    window.OpenTimestamps.DetachedTimestampFile.deserialize(
+      hexStringToUint8Array(t.timestamp)
+    )
+
+  const changed: boolean =
+    await window.OpenTimestamps.upgrade(detachedTimestamp)
+  if (changed) {
+    const updated = detachedTimestamp.serializeToBytes()
+
+    const value = {
+      ...t,
+      timestamp: bytesToHex(updated)
+    }
+
+    return {
+      value,
+      upgraded: true,
+      isComplete: detachedTimestamp.timestamp.isTimestampComplete()
+    }
+  }
+  return {
+    value: t,
+    upgraded: false,
+    isComplete: detachedTimestamp.timestamp.isTimestampComplete()
+  }
+}
+
+export const verify = async (
+  t: TimestampUpgradeVerifyResponse
+): Promise<TimestampUpgradeVerifyResponse> => {
+  const detachedNostrId = window.OpenTimestamps.DetachedTimestampFile.fromBytes(
+    new window.OpenTimestamps.Ops.OpSHA256(),
+    utf8Encoder.encode(t.value.nostrId)
+  )
+
+  let detachedTimestamp =
+    window.OpenTimestamps.DetachedTimestampFile.deserialize(
+      hexStringToUint8Array(t.value.timestamp)
+    )
+
+  const res = await window.OpenTimestamps.verify(
+    detachedTimestamp,
+    detachedNostrId
+  )
+
+  return {
+    ...t,
+    verified: !!res.bitcoin,
+    verification: res?.bitcoin || null
+  }
+}
+
 const timestamp = async (nostrId: string): Promise<string> => {
   const detachedTimestamp =
     window.OpenTimestamps.DetachedTimestampFile.fromBytes(