diff --git a/packages/nextjs/app/admin/_components/ActionModal.tsx b/packages/nextjs/app/admin/_components/ActionModal.tsx
new file mode 100644
index 0000000..ad4fbfc
--- /dev/null
+++ b/packages/nextjs/app/admin/_components/ActionModal.tsx
@@ -0,0 +1,46 @@
+import { forwardRef, useRef } from "react";
+import { useReviewGrant } from "../hooks/useReviewGrant";
+import { GrantData } from "~~/services/database/schema";
+import { PROPOSAL_STATUS } from "~~/utils/grants";
+
+type ActionModalProps = {
+  grant: GrantData;
+  initialTxLink?: string;
+};
+
+export const ActionModal = forwardRef<HTMLDialogElement, ActionModalProps>(({ grant, initialTxLink }, ref) => {
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  const { handleReviewGrant, isLoading } = useReviewGrant(grant);
+
+  const acceptStatus = grant.status === PROPOSAL_STATUS.PROPOSED ? PROPOSAL_STATUS.APPROVED : PROPOSAL_STATUS.COMPLETED;
+  const acceptLabel = grant.status === PROPOSAL_STATUS.PROPOSED ? "Approve" : "Complete";
+  return (
+    <dialog id="action_modal" className="modal" ref={ref}>
+      <div className="modal-box flex flex-col space-y-3">
+        <form method="dialog">
+          {/* if there is a button in form, it will close the modal */}
+          <button className="btn btn-sm btn-circle btn-ghost absolute right-2 top-2">✕</button>
+        </form>
+        <p className="font-bold text-lg m-0">{acceptLabel} this grant</p>
+        <input
+          type="text"
+          ref={inputRef}
+          defaultValue={initialTxLink ?? ""}
+          placeholder="Transaction hash"
+          className="input input-bordered"
+        />
+        <button
+          className={`btn btn-sm btn-success ${isLoading ? "opacity-50" : ""}`}
+          onClick={() => handleReviewGrant(acceptStatus, inputRef.current?.value)}
+          disabled={isLoading}
+        >
+          {isLoading && <span className="loading loading-spinner"></span>}
+          {acceptLabel}
+        </button>
+      </div>
+    </dialog>
+  );
+});
+
+ActionModal.displayName = "ActionModal";
diff --git a/packages/nextjs/app/admin/_components/GrantReview.tsx b/packages/nextjs/app/admin/_components/GrantReview.tsx
index b46ddbf..3b7f27a 100644
--- a/packages/nextjs/app/admin/_components/GrantReview.tsx
+++ b/packages/nextjs/app/admin/_components/GrantReview.tsx
@@ -1,20 +1,14 @@
-import { useSWRConfig } from "swr";
-import useSWRMutation from "swr/mutation";
-import { useAccount, useSignTypedData } from "wagmi";
+import { useRef } from "react";
+import { useReviewGrant } from "../hooks/useReviewGrant";
+import { ActionModal } from "./ActionModal";
+import { parseEther } from "viem";
+import { useSendTransaction } from "wagmi";
 import TelegramIcon from "~~/components/assets/TelegramIcon";
 import TwitterIcon from "~~/components/assets/TwitterIcon";
 import { Address } from "~~/components/scaffold-eth";
-import { GrantData, GrantDataWithBuilder, SocialLinks } from "~~/services/database/schema";
-import { EIP_712_DOMAIN, EIP_712_TYPES__REVIEW_GRANT } from "~~/utils/eip712";
-import { PROPOSAL_STATUS, ProposalStatusType } from "~~/utils/grants";
-import { notification } from "~~/utils/scaffold-eth";
-import { postMutationFetcher } from "~~/utils/swr";
-
-type ReqBody = {
-  signer: string;
-  signature: `0x${string}`;
-  action: ProposalStatusType;
-};
+import { useTransactor } from "~~/hooks/scaffold-eth";
+import { GrantDataWithBuilder, SocialLinks } from "~~/services/database/schema";
+import { PROPOSAL_STATUS } from "~~/utils/grants";
 
 const BuilderSocials = ({ socialLinks }: { socialLinks?: SocialLinks }) => {
   if (!socialLinks) return null;
@@ -46,55 +40,18 @@ const BuilderSocials = ({ socialLinks }: { socialLinks?: SocialLinks }) => {
 };
 
 export const GrantReview = ({ grant }: { grant: GrantDataWithBuilder }) => {
-  const { address } = useAccount();
-  const { signTypedDataAsync, isLoading: isSigningMessage } = useSignTypedData();
-  const { trigger: postReviewGrant, isMutating: isPostingNewGrant } = useSWRMutation(
-    `/api/grants/${grant.id}/review`,
-    postMutationFetcher<ReqBody>,
-  );
-  const { mutate } = useSWRConfig();
-  const isLoading = isSigningMessage || isPostingNewGrant;
-
-  const handleReviewGrant = async (grant: GrantData, action: ProposalStatusType) => {
-    if (!address) {
-      notification.error("Please connect your wallet");
-      return;
-    }
+  const modalRef = useRef<HTMLDialogElement>(null);
 
-    let signature;
-    try {
-      signature = await signTypedDataAsync({
-        domain: EIP_712_DOMAIN,
-        types: EIP_712_TYPES__REVIEW_GRANT,
-        primaryType: "Message",
-        message: {
-          grantId: grant.id,
-          action: action,
-        },
-      });
-    } catch (e) {
-      console.error("Error signing message", e);
-      notification.error("Error signing message");
-      return;
-    }
+  const { data: txnHash, sendTransactionAsync } = useSendTransaction({
+    to: grant.builder,
+    value: parseEther((grant.askAmount / 2).toString()),
+  });
+  const sendTx = useTransactor();
 
-    let notificationId;
-    try {
-      notificationId = notification.loading("Submitting review");
-      await postReviewGrant({ signer: address, signature, action });
-      await mutate("/api/grants/review");
-      notification.remove(notificationId);
-      notification.success(`Grant reviewed: ${action}`);
-    } catch (error) {
-      notification.error("Error reviewing grant");
-    } finally {
-      if (notificationId) notification.remove(notificationId);
-    }
-  };
+  const { handleReviewGrant, isLoading } = useReviewGrant(grant);
 
   if (grant.status !== PROPOSAL_STATUS.PROPOSED && grant.status !== PROPOSAL_STATUS.SUBMITTED) return null;
 
-  const acceptStatus = grant.status === PROPOSAL_STATUS.PROPOSED ? PROPOSAL_STATUS.APPROVED : PROPOSAL_STATUS.COMPLETED;
   const acceptLabel = grant.status === PROPOSAL_STATUS.PROPOSED ? "Approve" : "Complete";
   return (
     <div className="border p-4 my-4">
@@ -112,22 +69,38 @@ export const GrantReview = ({ grant }: { grant: GrantDataWithBuilder }) => {
         <BuilderSocials socialLinks={grant.builderData?.socialLinks} />
       </div>
       <p>{grant.description}</p>
-      <div className="flex gap-4 mt-4 justify-end">
+      <div className="flex gap-4 mt-4 justify-between">
         <button
           className={`btn btn-sm btn-error ${isLoading ? "opacity-50" : ""}`}
-          onClick={() => handleReviewGrant(grant, PROPOSAL_STATUS.REJECTED)}
+          onClick={() => handleReviewGrant(PROPOSAL_STATUS.REJECTED)}
           disabled={isLoading}
         >
           Reject
         </button>
-        <button
-          className={`btn btn-sm btn-success ${isLoading ? "opacity-50" : ""}`}
-          onClick={() => handleReviewGrant(grant, acceptStatus)}
-          disabled={isLoading}
-        >
-          {acceptLabel}
-        </button>
+        <div className="flex gap-4">
+          <button
+            className={`btn btn-sm btn-neutral ${isLoading ? "opacity-50" : ""}`}
+            onClick={async () => {
+              const resHash = await sendTx(sendTransactionAsync);
+              // Transactor eats the error, so we need to handle by checking resHash
+              if (resHash && modalRef.current) modalRef.current.showModal();
+            }}
+            disabled={isLoading}
+          >
+            Send 50%
+          </button>
+          <button
+            className={`btn btn-sm btn-success ${isLoading ? "opacity-50" : ""}`}
+            onClick={() => {
+              if (modalRef.current) modalRef.current.showModal();
+            }}
+            disabled={isLoading}
+          >
+            {acceptLabel}
+          </button>
+        </div>
       </div>
+      <ActionModal ref={modalRef} grant={grant} initialTxLink={txnHash?.hash} />
     </div>
   );
 };
diff --git a/packages/nextjs/app/admin/hooks/useReviewGrant.ts b/packages/nextjs/app/admin/hooks/useReviewGrant.ts
new file mode 100644
index 0000000..15fbc71
--- /dev/null
+++ b/packages/nextjs/app/admin/hooks/useReviewGrant.ts
@@ -0,0 +1,67 @@
+import { useSWRConfig } from "swr";
+import useSWRMutation from "swr/mutation";
+import { useAccount, useSignTypedData } from "wagmi";
+import { GrantData } from "~~/services/database/schema";
+import { EIP_712_DOMAIN, EIP_712_TYPES__REVIEW_GRANT } from "~~/utils/eip712";
+import { ProposalStatusType } from "~~/utils/grants";
+import { notification } from "~~/utils/scaffold-eth";
+import { postMutationFetcher } from "~~/utils/swr";
+
+type ReqBody = {
+  signer: string;
+  signature: `0x${string}`;
+  action: ProposalStatusType;
+  txHash: string;
+};
+
+export const useReviewGrant = (grant: GrantData) => {
+  const { address } = useAccount();
+  const { signTypedDataAsync, isLoading: isSigningMessage } = useSignTypedData();
+  const { trigger: postReviewGrant, isMutating: isPostingNewGrant } = useSWRMutation(
+    `/api/grants/${grant.id}/review`,
+    postMutationFetcher<ReqBody>,
+  );
+  const { mutate } = useSWRConfig();
+
+  const isLoading = isSigningMessage || isPostingNewGrant;
+
+  const handleReviewGrant = async (action: ProposalStatusType, txnHash = "") => {
+    if (!address) {
+      notification.error("Please connect your wallet");
+      return;
+    }
+
+    let signature;
+    try {
+      signature = await signTypedDataAsync({
+        domain: EIP_712_DOMAIN,
+        types: EIP_712_TYPES__REVIEW_GRANT,
+        primaryType: "Message",
+        message: {
+          grantId: grant.id,
+          action: action,
+          txHash: txnHash,
+        },
+      });
+    } catch (e) {
+      console.error("Error signing message", e);
+      notification.error("Error signing message");
+      return;
+    }
+
+    let notificationId;
+    try {
+      notificationId = notification.loading("Submitting review");
+      await postReviewGrant({ signer: address, signature, action, txHash: txnHash });
+      await mutate("/api/grants/review");
+      notification.remove(notificationId);
+      notification.success(`Grant reviewed: ${action}`);
+    } catch (error) {
+      notification.error("Error reviewing grant");
+    } finally {
+      if (notificationId) notification.remove(notificationId);
+    }
+  };
+
+  return { handleReviewGrant, isLoading };
+};
diff --git a/packages/nextjs/app/api/grants/[grantId]/review/route.tsx b/packages/nextjs/app/api/grants/[grantId]/review/route.tsx
index 8a42533..d52bcd9 100644
--- a/packages/nextjs/app/api/grants/[grantId]/review/route.tsx
+++ b/packages/nextjs/app/api/grants/[grantId]/review/route.tsx
@@ -3,11 +3,18 @@ import { recoverTypedDataAddress } from "viem";
 import { reviewGrant } from "~~/services/database/grants";
 import { findUserByAddress } from "~~/services/database/users";
 import { EIP_712_DOMAIN, EIP_712_TYPES__REVIEW_GRANT } from "~~/utils/eip712";
-import { PROPOSAL_STATUS } from "~~/utils/grants";
+import { PROPOSAL_STATUS, ProposalStatusType } from "~~/utils/grants";
+
+type ReqBody = {
+  signer: string;
+  signature: `0x${string}`;
+  action: ProposalStatusType;
+  txHash: string;
+};
 
 export async function POST(req: NextRequest, { params }: { params: { grantId: string } }) {
   const { grantId } = params;
-  const { signature, signer, action } = await req.json();
+  const { signature, signer, action, txHash } = (await req.json()) as ReqBody;
 
   // Validate action is valid
   const validActions = Object.values(PROPOSAL_STATUS);
@@ -24,6 +31,7 @@ export async function POST(req: NextRequest, { params }: { params: { grantId: st
     message: {
       grantId: grantId,
       action: action,
+      txHash,
     },
     signature,
   });
@@ -42,7 +50,7 @@ export async function POST(req: NextRequest, { params }: { params: { grantId: st
   }
 
   try {
-    await reviewGrant(grantId, action);
+    await reviewGrant(grantId, action, txHash);
   } catch (error) {
     console.error("Error approving grant", error);
     return NextResponse.json({ error: "Error approving grant" }, { status: 500 });
diff --git a/packages/nextjs/services/database/grants.ts b/packages/nextjs/services/database/grants.ts
index 73dacfa..720b599 100644
--- a/packages/nextjs/services/database/grants.ts
+++ b/packages/nextjs/services/database/grants.ts
@@ -109,15 +109,26 @@ export const getAllActiveGrants = async () => {
   }
 };
 
-export const reviewGrant = async (grantId: string, action: ProposalStatusType) => {
+export const reviewGrant = async (grantId: string, action: ProposalStatusType, txHash: string) => {
   try {
     const validActions = Object.values(PROPOSAL_STATUS);
     if (!validActions.includes(action)) {
       throw new Error(`Invalid action: ${action}`);
     }
+
+    const updateTxHash: Record<string, string> = {};
+    if (action === PROPOSAL_STATUS.APPROVED) {
+      updateTxHash["approvedTx"] = txHash;
+    }
+    if (action === PROPOSAL_STATUS.COMPLETED) {
+      updateTxHash["completedTx"] = txHash;
+    }
+
     const grantActionTimeStamp = new Date().getTime();
     const grantActionTimeStampKey = (action + "At") as `${typeof action}At`;
-    await grantsCollection.doc(grantId).update({ status: action, [grantActionTimeStampKey]: grantActionTimeStamp });
+    await grantsCollection
+      .doc(grantId)
+      .update({ status: action, [grantActionTimeStampKey]: grantActionTimeStamp, ...updateTxHash });
   } catch (error) {
     console.error("Error approving the grant:", error);
     throw error;
diff --git a/packages/nextjs/services/database/schema.ts b/packages/nextjs/services/database/schema.ts
index 74d0793..91c19a3 100644
--- a/packages/nextjs/services/database/schema.ts
+++ b/packages/nextjs/services/database/schema.ts
@@ -48,6 +48,8 @@ export type GrantWithoutTimestamps = {
   builder: string;
   link?: string;
   status: "proposed" | "approved" | "submitted" | "completed" | "rejected";
+  approvedTx?: string;
+  completedTx?: string;
 };
 
 export type GrantData = Simplify<
diff --git a/packages/nextjs/utils/eip712.ts b/packages/nextjs/utils/eip712.ts
index 319ecee..012abe7 100644
--- a/packages/nextjs/utils/eip712.ts
+++ b/packages/nextjs/utils/eip712.ts
@@ -1,7 +1,9 @@
+import scaffoldConfig from "~~/scaffold.config";
+
 export const EIP_712_DOMAIN = {
   name: "BuidlGuidl Grants",
   version: "1",
-  chainId: 10,
+  chainId: scaffoldConfig.targetNetworks[0].id,
 } as const;
 
 export const EIP_712_TYPES__APPLY_FOR_GRANT = {
@@ -17,6 +19,7 @@ export const EIP_712_TYPES__REVIEW_GRANT = {
   Message: [
     { name: "grantId", type: "string" },
     { name: "action", type: "string" },
+    { name: "txHash", type: "string" },
   ],
 } as const;