diff --git a/include/bitcoin/database/impl/query/archive_read.ipp b/include/bitcoin/database/impl/query/archive_read.ipp
index 0cd61b9e..8f8b9c0a 100644
--- a/include/bitcoin/database/impl/query/archive_read.ipp
+++ b/include/bitcoin/database/impl/query/archive_read.ipp
@@ -86,6 +86,18 @@ inline bool CLASS::is_valid(const header_link& link) const NOEXCEPT
 // Empty/null_hash implies fault, zero count implies unassociated.
 // ----------------------------------------------------------------------------
 
+TEMPLATE
+hash_digest CLASS::get_top_confirmed_hash() const NOEXCEPT
+{
+    return get_header_key(to_confirmed(get_top_confirmed()));
+}
+
+TEMPLATE
+hash_digest CLASS::get_top_candidate_hash() const NOEXCEPT
+{
+    return get_header_key(to_candidate(get_top_candidate()));
+}
+
 TEMPLATE
 hashes CLASS::get_tx_keys(const header_link& link) const NOEXCEPT
 {
diff --git a/include/bitcoin/database/query.hpp b/include/bitcoin/database/query.hpp
index 4f796904..230225cc 100644
--- a/include/bitcoin/database/query.hpp
+++ b/include/bitcoin/database/query.hpp
@@ -331,6 +331,8 @@ class query
     inline bool is_valid(const header_link& link) const NOEXCEPT;
 
     /// Empty/null_hash implies fault, zero count implies unassociated.
+    hash_digest get_top_confirmed_hash() const NOEXCEPT;
+    hash_digest get_top_candidate_hash() const NOEXCEPT;
     hashes get_tx_keys(const header_link& link) const NOEXCEPT;
     size_t get_tx_count(const header_link& link) const NOEXCEPT;
     inline hash_digest get_header_key(const header_link& link) const NOEXCEPT;