diff --git a/nano/core_test/active_elections.cpp b/nano/core_test/active_elections.cpp
index 6c13d4a0..05c243aa 100644
--- a/nano/core_test/active_elections.cpp
+++ b/nano/core_test/active_elections.cpp
@@ -1224,7 +1224,7 @@ TEST (active_elections, activate_inactive)
 	ASSERT_NE (nullptr, election);
 	election->force_confirm ();
 
-	ASSERT_TIMELY (5s, !node.confirming_set.exists (send2->hash ()));
+	ASSERT_TIMELY (5s, !node.confirming_set.contains (send2->hash ()));
 	ASSERT_TIMELY (5s, node.block_confirmed (send2->hash ()));
 	ASSERT_TIMELY (5s, node.block_confirmed (send->hash ()));
 
diff --git a/nano/core_test/confirming_set.cpp b/nano/core_test/confirming_set.cpp
index 7d250178..46e7b914 100644
--- a/nano/core_test/confirming_set.cpp
+++ b/nano/core_test/confirming_set.cpp
@@ -30,7 +30,7 @@ TEST (confirming_set, add_exists)
 	nano::confirming_set confirming_set{ config, ctx.ledger (), ctx.stats () };
 	auto send = ctx.blocks ()[0];
 	confirming_set.add (send->hash ());
-	ASSERT_TRUE (confirming_set.exists (send->hash ()));
+	ASSERT_TRUE (confirming_set.contains (send->hash ()));
 }
 
 TEST (confirming_set, process_one)
@@ -242,7 +242,7 @@ TEST (confirmation_callback, dependent_election)
 	// Wait for blocks to be confirmed in ledger, callbacks will happen after
 	ASSERT_TIMELY_EQ (5s, 3, node->stats.count (nano::stat::type::confirmation_height, nano::stat::detail::blocks_confirmed, nano::stat::dir::in));
 	// Once the item added to the confirming set no longer exists, callbacks have completed
-	ASSERT_TIMELY (5s, !node->confirming_set.exists (send2->hash ()));
+	ASSERT_TIMELY (5s, !node->confirming_set.contains (send2->hash ()));
 
 	ASSERT_TIMELY_EQ (5s, 1, node->stats.count (nano::stat::type::confirmation_observer, nano::stat::detail::active_quorum, nano::stat::dir::out));
 	ASSERT_TIMELY_EQ (5s, 1, node->stats.count (nano::stat::type::confirmation_observer, nano::stat::detail::active_conf_height, nano::stat::dir::out));
diff --git a/nano/node/confirming_set.cpp b/nano/node/confirming_set.cpp
index f7a01253..de92e853 100644
--- a/nano/node/confirming_set.cpp
+++ b/nano/node/confirming_set.cpp
@@ -68,7 +68,7 @@ void nano::confirming_set::stop ()
 	notification_workers.stop ();
 }
 
-bool nano::confirming_set::exists (nano::block_hash const & hash) const
+bool nano::confirming_set::contains (nano::block_hash const & hash) const
 {
 	std::lock_guard lock{ mutex };
 	return set.get<tag_hash> ().contains (hash);
diff --git a/nano/node/confirming_set.hpp b/nano/node/confirming_set.hpp
index 5eb42967..00329fea 100644
--- a/nano/node/confirming_set.hpp
+++ b/nano/node/confirming_set.hpp
@@ -51,7 +51,7 @@ public:
 	// Adds a block to the set of blocks to be confirmed
 	void add (nano::block_hash const & hash, std::shared_ptr<nano::election> const & election = nullptr);
 	// Added blocks will remain in this set until after ledger has them marked as confirmed.
-	bool exists (nano::block_hash const & hash) const;
+	bool contains (nano::block_hash const & hash) const;
 	std::size_t size () const;
 
 	nano::container_info container_info () const;
diff --git a/nano/node/json_handler.cpp b/nano/node/json_handler.cpp
index 198bdeac..8b75b9d0 100644
--- a/nano/node/json_handler.cpp
+++ b/nano/node/json_handler.cpp
@@ -1187,7 +1187,7 @@ void nano::json_handler::block_confirm ()
 			if (!node.ledger.confirmed.block_exists_or_pruned (transaction, hash))
 			{
 				// Start new confirmation for unconfirmed (or not being confirmed) block
-				if (!node.confirming_set.exists (hash))
+				if (!node.confirming_set.contains (hash))
 				{
 					node.start_election (std::move (block_l));
 				}
diff --git a/nano/node/node.cpp b/nano/node/node.cpp
index 346c20ae..5871f2cf 100644
--- a/nano/node/node.cpp
+++ b/nano/node/node.cpp
@@ -1104,14 +1104,14 @@ void nano::node::start_election (std::shared_ptr<nano::block> const & block)
 	scheduler.manual.push (block);
 }
 
-bool nano::node::block_confirmed (nano::block_hash const & hash_a)
+bool nano::node::block_confirmed (nano::block_hash const & hash)
 {
-	return ledger.confirmed.block_exists_or_pruned (ledger.tx_begin_read (), hash_a);
+	return ledger.confirmed.block_exists_or_pruned (ledger.tx_begin_read (), hash);
 }
 
-bool nano::node::block_confirmed_or_being_confirmed (nano::secure::transaction const & transaction, nano::block_hash const & hash_a)
+bool nano::node::block_confirmed_or_being_confirmed (nano::secure::transaction const & transaction, nano::block_hash const & hash)
 {
-	return confirming_set.exists (hash_a) || ledger.confirmed.block_exists_or_pruned (transaction, hash_a);
+	return confirming_set.contains (hash) || ledger.confirmed.block_exists_or_pruned (transaction, hash);
 }
 
 bool nano::node::block_confirmed_or_being_confirmed (nano::block_hash const & hash_a)
diff --git a/nano/node/wallet.cpp b/nano/node/wallet.cpp
index 837a2ca4..716f78ee 100644
--- a/nano/node/wallet.cpp
+++ b/nano/node/wallet.cpp
@@ -1201,7 +1201,7 @@ bool nano::wallet::search_receivable (store::transaction const & wallet_transact
 							// Receive confirmed block
 							receive_async (hash, representative, amount, account, [] (std::shared_ptr<nano::block> const &) {});
 						}
-						else if (!wallets.node.confirming_set.exists (hash))
+						else if (!wallets.node.confirming_set.contains (hash))
 						{
 							auto block = wallets.node.ledger.any.block_get (block_transaction, hash);
 							if (block)