diff --git a/src/app/api/funding-rounds/[id]/consideration-proposals/route.ts b/src/app/api/funding-rounds/[id]/consideration-proposals/route.ts
index 6ea26ef..b89c0ca 100644
--- a/src/app/api/funding-rounds/[id]/consideration-proposals/route.ts
+++ b/src/app/api/funding-rounds/[id]/consideration-proposals/route.ts
@@ -32,7 +32,8 @@ function parseOCVVoteData(data: JsonValue | null | undefined): OCVVoteData {
     elegible: Boolean(voteData.elegible),
     votes: Array.isArray(voteData.votes) ? voteData.votes.map(vote => ({
       account: String(vote.account || ''),
-      timestamp: Number(vote.timestamp || 0)
+      timestamp: Number(vote.timestamp || 0),
+      hash: String(vote.hash || '')
     })) : []
   };
 }
@@ -145,7 +146,8 @@ export async function GET(
               isEligible: ocvVotes.elegible || false,
               voters: ocvVotes.votes?.map((v: OCVVote) => ({
                 address: v.account,
-                timestamp: v.timestamp
+                timestamp: v.timestamp,
+                hash: v.hash
               })) || []
             },
             reviewerEligible: approved >= minReviewerApprovals,
diff --git a/src/components/ConsiderationProposalList.tsx b/src/components/ConsiderationProposalList.tsx
index 97caa84..e22e638 100644
--- a/src/components/ConsiderationProposalList.tsx
+++ b/src/components/ConsiderationProposalList.tsx
@@ -300,8 +300,16 @@ export function ConsiderationProposalList({ fundingRoundId, fundingRoundName }:
     if (!proposal.isReviewerEligible) {
       return (
         <div className="flex gap-2">
-          <OCVVoteButton proposalId={proposal.id.toString()} useWallet={true} />
-          <OCVVoteButton proposalId={proposal.id.toString()} useWallet={false} />
+          <OCVVoteButton 
+            proposalId={proposal.id.toString()} 
+            useWallet={true} 
+            voteStats={proposal.voteStats}
+          />
+          <OCVVoteButton 
+            proposalId={proposal.id.toString()} 
+            useWallet={false} 
+            voteStats={proposal.voteStats}
+          />
         </div>
       );
     }
@@ -329,8 +337,16 @@ export function ConsiderationProposalList({ fundingRoundId, fundingRoundName }:
     if (!proposal.isReviewerEligible) {
       return (
         <div className="flex gap-2">
-          <OCVVoteButton proposalId={proposal.id.toString()} useWallet={true} />
-          <OCVVoteButton proposalId={proposal.id.toString()} useWallet={false} />
+          <OCVVoteButton 
+            proposalId={proposal.id.toString()} 
+            useWallet={true} 
+            voteStats={proposal.voteStats}
+          />
+          <OCVVoteButton 
+            proposalId={proposal.id.toString()} 
+            useWallet={false} 
+            voteStats={proposal.voteStats}
+          />
         </div>
       );
     }
diff --git a/src/components/web3/OCVVoteButton.tsx b/src/components/web3/OCVVoteButton.tsx
index 36ec550..6d845b4 100644
--- a/src/components/web3/OCVVoteButton.tsx
+++ b/src/components/web3/OCVVoteButton.tsx
@@ -1,6 +1,6 @@
 "use client"
 
-import { useState } from "react"
+import { useState, useMemo } from "react"
 import { Button } from "@/components/ui/button"
 import { useWallet } from "@/contexts/WalletContext"
 import { WalletConnectorDialog } from "./WalletConnectorDialog"
@@ -8,18 +8,45 @@ import { ManualVoteDialog } from "./dialogs/OCVManualInstructions"
 import { OCVTransactionDialog } from "./dialogs/OCVTransactionDialog"
 import { Icons } from "@/components/icons"
 import { TARGET_NETWORK } from "@/contexts/WalletContext"
+import { 
+  Tooltip, 
+  TooltipContent, 
+  TooltipTrigger,
+  TooltipProvider 
+} from "@/components/ui/tooltip"
+import { formatDistanceToNow } from "date-fns"
+import type { ConsiderationVoteStats } from "@/types/consideration"
 
 interface OCVVoteButtonProps {
   proposalId: string
   useWallet?: boolean
+  voteStats: ConsiderationVoteStats
 }
 
-export function OCVVoteButton({ proposalId, useWallet: isWalletEnabled = true }: OCVVoteButtonProps) {
+// Add type for voter
+interface Voter {
+  address: string
+  timestamp: number
+  hash: string
+}
+
+export function OCVVoteButton({ 
+  proposalId, 
+  useWallet: isWalletEnabled = true,
+  voteStats 
+}: OCVVoteButtonProps) {
   const { state, enforceTargetNetwork } = useWallet()
   const [showWalletDialog, setShowWalletDialog] = useState(false)
   const [showManualDialog, setShowManualDialog] = useState(false)
   const [showTransactionDialog, setShowTransactionDialog] = useState(false)
 
+  const existingVote = useMemo(() => {
+    if (!state.wallet?.address) return null
+    return voteStats.communityVotes.voters.find(
+      (voter: Voter) => voter.address.toLowerCase() === state.wallet!.address.toLowerCase()
+    )
+  }, [voteStats.communityVotes.voters, state.wallet])
+
   const handleVoteClick = async () => {
     if (!isWalletEnabled) {
       setShowManualDialog(true)
@@ -43,20 +70,50 @@ export function OCVVoteButton({ proposalId, useWallet: isWalletEnabled = true }:
 
   const buttonText = isWalletEnabled 
     ? state.wallet 
-      ? "Vote with Wallet"
+      ? existingVote
+        ? "Already Voted"
+        : "Vote with Wallet"
       : "Connect Wallet to Vote"
     : "Vote Without Wallet"
 
+  const walletButton = (
+    <Button
+      variant={isWalletEnabled ? "default" : "outline"}
+      onClick={handleVoteClick}
+      className="gap-2"
+      disabled={Boolean(isWalletEnabled && state.wallet && existingVote)}
+    >
+      {isWalletEnabled && <Icons.wallet className="h-4 w-4" />}
+      {buttonText}
+    </Button>
+  )
+
   return (
     <>
-      <Button
-        variant={isWalletEnabled ? "default" : "outline"}
-        onClick={handleVoteClick}
-        className="gap-2"
-      >
-        {isWalletEnabled && <Icons.wallet className="h-4 w-4" />}
-        {buttonText}
-      </Button>
+      {isWalletEnabled && state.wallet && existingVote ? (
+        <TooltipProvider delayDuration={0}>
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <div>{walletButton}</div>
+            </TooltipTrigger>
+            <TooltipContent 
+              side="top" 
+              align="center"
+              className="max-w-[300px] p-4 bg-popover text-popover-foreground"
+            >
+              <div className="space-y-2">
+                <p className="font-medium">You have already voted on this proposal</p>
+                <div className="text-xs text-muted-foreground space-y-1">
+                  <p>Time: {formatDistanceToNow(existingVote.timestamp)} ago</p>
+                  <p className="break-all">Transaction: {existingVote.hash}</p>
+                </div>
+              </div>
+            </TooltipContent>
+          </Tooltip>
+        </TooltipProvider>
+      ) : (
+        walletButton
+      )}
 
       <WalletConnectorDialog 
         open={showWalletDialog} 
@@ -68,6 +125,7 @@ export function OCVVoteButton({ proposalId, useWallet: isWalletEnabled = true }:
         onOpenChange={setShowManualDialog}
         voteId={proposalId}
         voteType="YES"
+        existingVote={existingVote}
       />
 
       {state.wallet && (
diff --git a/src/components/web3/dialogs/OCVManualInstructions.tsx b/src/components/web3/dialogs/OCVManualInstructions.tsx
index 55bf9e5..f9c08f2 100644
--- a/src/components/web3/dialogs/OCVManualInstructions.tsx
+++ b/src/components/web3/dialogs/OCVManualInstructions.tsx
@@ -10,19 +10,27 @@ import {
   DialogTitle,
 } from "@/components/ui/dialog"
 import { cn } from "@/lib/utils"
+import { Alert, AlertDescription } from "@/components/ui/alert"
+import { formatDistanceToNow } from "date-fns"
 
 interface ManualVoteDialogProps {
   open: boolean
   onOpenChange: (open: boolean) => void
   voteId: string
   voteType: "YES" | "NO"
+  existingVote?: {
+    address: string
+    timestamp: number
+    hash: string
+  } | null
 }
 
 export function ManualVoteDialog({ 
   open, 
   onOpenChange, 
   voteId, 
-  voteType 
+  voteType,
+  existingVote
 }: ManualVoteDialogProps) {
   const [copied, setCopied] = useState(false)
   const memo = `${voteType} ${voteId}`
@@ -45,21 +53,47 @@ export function ManualVoteDialog({
             How do I cast my vote?
           </DialogTitle>
         </DialogHeader>
-        <div className="space-y-6 py-4">
+
+        <div className="space-y-4">
+          {existingVote && (
+            <Alert 
+              className={cn(
+                "border-orange-200 dark:border-orange-900",
+                "bg-orange-100 dark:bg-orange-900/30",
+                "text-orange-900 dark:text-orange-200",
+                "[&>svg]:text-orange-900 dark:[&>svg]:text-orange-200"
+              )}
+            >
+              <AlertDescription>
+                <div className="space-y-2">
+                  <p className="font-semibold">
+                    Your connected wallet has already voted on this proposal
+                  </p>
+                  <div className="text-xs space-y-1 text-orange-800 dark:text-orange-200/90">
+                    <p>Time: {formatDistanceToNow(existingVote.timestamp)} ago</p>
+                    <p className="break-all">
+                      Transaction: {existingVote.hash}
+                    </p>
+                  </div>
+                </div>
+              </AlertDescription>
+            </Alert>
+          )}
+
           <div className="space-y-4">
-            <p className="text-center text-muted-foreground">
+            <p className="text-sm text-center text-muted-foreground">
               Send a transaction to yourself with the following text in the memo field:
             </p>
             
             <div className="relative">
-              <div className="flex items-center justify-between rounded-lg border bg-muted p-4">
-                <code className="text-lg font-mono">{memo}</code>
+              <div className="flex items-center gap-2 rounded-lg border bg-muted/50 p-3">
+                <code className="flex-1 text-sm font-mono break-all">{memo}</code>
                 <Button
                   variant="ghost"
                   size="icon"
                   onClick={copyToClipboard}
                   className={cn(
-                    "transition-colors",
+                    "flex-shrink-0 transition-colors",
                     copied && "text-green-500"
                   )}
                 >
@@ -73,9 +107,9 @@ export function ManualVoteDialog({
               </div>
             </div>
 
-            <div className="space-y-2 text-sm text-muted-foreground">
-              <p className="font-medium text-foreground">Instructions:</p>
-              <ol className="list-decimal pl-4 space-y-1">
+            <div className="space-y-3">
+              <p className="font-medium text-sm">Instructions:</p>
+              <ol className="text-sm space-y-2 list-decimal list-inside text-muted-foreground">
                 <li>Copy the memo shown above</li>
                 <li>Use your preferred wallet (or a CLI) to create a transaction</li>
                 <li>Set the recipient address to your own address</li>
@@ -83,8 +117,12 @@ export function ManualVoteDialog({
                 <li>Set the memo field to the copied text</li>
                 <li>Send the transaction to cast your vote</li>
               </ol>
-              <p className="mt-4 text-sm">
-                Note: Make sure to follow the exact format of the memo to ensure your vote is properly recorded. The transaction must be sent to your own address, and the amount can be 0 MINA.
+            </div>
+              
+            <div className="rounded-lg bg-muted/50 p-3">
+              <p className="text-xs text-muted-foreground">
+                Note: Make sure to follow the exact format of the memo to ensure your vote is properly recorded. 
+                The transaction must be sent to your own address, and the amount can be 0 MINA.
               </p>
             </div>
           </div>
diff --git a/src/types/consideration.ts b/src/types/consideration.ts
index bd0ce37..ac8a2cd 100644
--- a/src/types/consideration.ts
+++ b/src/types/consideration.ts
@@ -12,6 +12,7 @@ export interface ConsiderationVoteStats {
     voters: Array<{
       address: string;
       timestamp: number;
+      hash: string;
     }>;
   };
   reviewerEligible: boolean;
@@ -39,6 +40,7 @@ export interface ConsiderationProposal {
 export interface OCVVote {
   account: string;
   timestamp: number;
+  hash: string;
 }
 
 export interface OCVVoteData {