diff --git a/contracts/tasks/TaskManager.sol b/contracts/tasks/TaskManager.sol
index 27a9ae7b..80858191 100644
--- a/contracts/tasks/TaskManager.sol
+++ b/contracts/tasks/TaskManager.sol
@@ -295,6 +295,16 @@ contract TaskManager is ITaskManager, Initializable, PeriodUtils, AccessUtils {
         return memberActivities[who][periodId].pointsGiven;
     }
 
+    /// @inheritdoc ITaskManager
+    function isMemberGivenContributionId(address who, bytes32 contributionId) external view returns (bool) {
+        return memberContributions[who].contains(contributionId);
+    }
+
+    /// @inheritdoc ITaskManager
+    function getMemberContributionIds(address who) external view returns (bytes32[] memory) {
+        return memberContributions[who].values();
+    }
+
     /// @inheritdoc ITaskManager
     function getMemberContributionIds(address who, uint32 periodId) external view returns (bytes32[] memory) {
         return memberActivities[who][periodId].contributionIds;
diff --git a/contracts/tasks/interfaces/ITaskManager.sol b/contracts/tasks/interfaces/ITaskManager.sol
index 9d756f71..22fd89c7 100644
--- a/contracts/tasks/interfaces/ITaskManager.sol
+++ b/contracts/tasks/interfaces/ITaskManager.sol
@@ -140,6 +140,13 @@ interface ITaskManager {
     /// @notice return the amount of points a member has been given for a provided periodId
     function getMemberPointsGiven(address who, uint32 periodId) external view returns (uint128);
 
+    /// @notice return true if a member has been given a specific contributionId
+    /// @dev each member can only receive a unique contributionId once
+    function isMemberGivenContributionId(address who, bytes32 contributionId) external view returns (bool);
+
+    /// @notice return the contributionId's given to a member across all periods
+    function getMemberContributionIds(address who) external view returns (bytes32[] memory);
+
     /// @notice return the contributionId's given to a member for a provided periodId
     function getMemberContributionIds(address who, uint32 periodId) external view returns (bytes32[] memory);