diff --git a/DaoPools/schema.graphql b/DaoPools/schema.graphql
index f2443a7..2484eaa 100644
--- a/DaoPools/schema.graphql
+++ b/DaoPools/schema.graphql
@@ -209,6 +209,8 @@ type Proposal @entity {
   executor: Bytes!
   "The timestamp of execution"
   executionTimestamp: BigInt!
+  "The hash of proposal execution tx"
+  executionHash: Bytes!
   "The timestamp of reaching quorum"
   quorumReachedTimestamp: BigInt!
 
@@ -449,6 +451,9 @@ type TokenSaleTier @entity {
   "id forms from token sale address + tier id"
   id: Bytes!
 
+  "The hash of tier creation tx"
+  creationHash: Bytes!
+
   "The sale token contract address"
   saleToken: Bytes!
 
diff --git a/DaoPools/src/entities/Proposal.ts b/DaoPools/src/entities/Proposal.ts
index 22658e3..59b5b85 100644
--- a/DaoPools/src/entities/Proposal.ts
+++ b/DaoPools/src/entities/Proposal.ts
@@ -22,6 +22,7 @@ export function getProposal(
     proposal.isFor = false;
     proposal.executor = Bytes.empty();
     proposal.executionTimestamp = BigInt.zero();
+    proposal.executionHash = Bytes.empty();
     proposal.quorumReachedTimestamp = BigInt.zero();
 
     proposal.rewardToken = rewardToken;
diff --git a/DaoPools/src/entities/TokenSaleTier.ts b/DaoPools/src/entities/TokenSaleTier.ts
index a9a9a2f..5c829e7 100644
--- a/DaoPools/src/entities/TokenSaleTier.ts
+++ b/DaoPools/src/entities/TokenSaleTier.ts
@@ -14,6 +14,8 @@ export function getTokenSaleTier(
 
     tier.saleToken = saleToken;
 
+    tier.creationHash = Bytes.empty();
+
     tier.totalBuyersCount = BigInt.zero();
     tier.buyers = new Array();
 
diff --git a/DaoPools/src/mappings/DaoPool.ts b/DaoPools/src/mappings/DaoPool.ts
index 51a2378..2f50ceb 100644
--- a/DaoPools/src/mappings/DaoPool.ts
+++ b/DaoPools/src/mappings/DaoPool.ts
@@ -335,6 +335,7 @@ export function onProposalExecuted(event: ProposalExecuted): void {
   proposal.isFor = event.params.isFor;
   proposal.executor = event.params.sender;
   proposal.executionTimestamp = event.block.timestamp;
+  proposal.executionHash = event.transaction.hash;
 
   proposal.save();
   pool.save();
diff --git a/DaoPools/src/mappings/TokenSale.ts b/DaoPools/src/mappings/TokenSale.ts
index fea2edd..70af7aa 100644
--- a/DaoPools/src/mappings/TokenSale.ts
+++ b/DaoPools/src/mappings/TokenSale.ts
@@ -11,6 +11,9 @@ import { push } from "../helpers/ArrayHelper";
 export function onTierCreated(event: TierCreated): void {
   let tokenSale = getTokenSale(event.address);
   let tier = getTokenSaleTier(tokenSale, event.params.tierId, event.params.saleToken);
+
+  tier.creationHash = event.transaction.hash;
+
   let participationDetails = event.params.participationDetails;
   for (let i = 0; i < participationDetails.length; i++) {
     tier.whitelistTypes = push(tier.whitelistTypes, BigInt.fromI32(participationDetails[i].participationType));
diff --git a/DaoPools/tests/DaoPool.test.ts b/DaoPools/tests/DaoPool.test.ts
index d5fa62e..48d95e2 100644
--- a/DaoPools/tests/DaoPool.test.ts
+++ b/DaoPools/tests/DaoPool.test.ts
@@ -1205,6 +1205,12 @@ describe("DaoPool", () => {
       "executionTimestamp",
       block.timestamp.toString()
     );
+    assert.fieldEquals(
+      "Proposal",
+      contractSender.concatI32(proposalId.toI32()).toHexString(),
+      "executionHash",
+      tx.hash.toHexString()
+    );
 
     proposalId = BigInt.fromI32(2);
     isFor = false;
diff --git a/DaoPools/tests/TokenSale.test.ts b/DaoPools/tests/TokenSale.test.ts
index 04b022d..5c72f04 100644
--- a/DaoPools/tests/TokenSale.test.ts
+++ b/DaoPools/tests/TokenSale.test.ts
@@ -115,6 +115,12 @@ describe("TokenSale", () => {
       "tokenSale",
       contractSender.toHexString()
     );
+    assert.fieldEquals(
+      "TokenSaleTier",
+      contractSender.concatI32(tierId.toI32()).toHexString(),
+      "creationHash",
+      tx.hash.toHexString()
+    );
     assert.fieldEquals(
       "TokenSaleTier",
       contractSender.concatI32(tierId.toI32()).toHexString(),