diff --git a/src/util.c b/src/util.c
index addb081..8dd6b32 100644
--- a/src/util.c
+++ b/src/util.c
@@ -84,23 +84,6 @@ bin_to_hex(const char *bin, size_t bin_size, char *hex)
     }
 }
 
-void
-reverse_hex(char *hex, size_t len)
-{
-    assert(len % 2 == 0);
-    size_t start = 0;
-    size_t end = len-2;
-    char temp[2];
-    while (start < end)
-    {
-        memcpy(&temp[0], &hex[start], 2);
-        memcpy(&hex[start], &hex[end], 2);
-        memcpy(&hex[end], &temp[0], 2);
-        start += 2;
-        end -= 2;
-    }
-}
-
 void
 reverse_bin(char *bin, size_t len)
 {
diff --git a/src/util.h b/src/util.h
index a23d97e..858e52a 100644
--- a/src/util.h
+++ b/src/util.h
@@ -36,7 +36,6 @@
 int is_hex_string(const char *str);
 void hex_to_bin(const char *hex, char *bin, size_t bin_size);
 void bin_to_hex(const char *bin, size_t bin_size, char *hex);
-void reverse_hex(char *hex, size_t len);
 void reverse_bin(char *bin, size_t len);
 
 #endif
diff --git a/src/xmr.cpp b/src/xmr.cpp
index 36328f3..8499600 100644
--- a/src/xmr.cpp
+++ b/src/xmr.cpp
@@ -67,21 +67,6 @@ int get_hashing_blob(const char *input, const size_t in_size, char **output, siz
     return 0;
 }
 
-int construct_block_blob(const char *block_data, uint64_t nonce, char **blob)
-{
-    struct block b = AUTO_VAL_INIT(b);
-    blobdata bd = block_data;
-    if (!parse_and_validate_block_from_blob(bd, b))
-        return -1;
-    b.nonce = nonce;
-    bd = "";
-    if (!block_to_blob(b, bd))
-        return -2;
-    *blob = (char*) malloc(bd.size());
-    memcpy(*blob, bd.data(), bd.length());
-    return 0;
-}
-
 int parse_address(const char *input, uint64_t *prefix)
 {
     uint64_t tag;
@@ -99,8 +84,3 @@ void get_hash(const char *input, const size_t in_size, char **output, int varian
     crypto::cn_slow_hash(input, in_size, reinterpret_cast<crypto::hash&>(*output), variant, height);
 }
 
-bool check_hash(const char* hash, uint64_t difficulty)
-{
-    return check_hash(reinterpret_cast<const crypto::hash&>(hash), difficulty);
-}
-
diff --git a/src/xmr.h b/src/xmr.h
index 8e1c250..79d04d6 100644
--- a/src/xmr.h
+++ b/src/xmr.h
@@ -38,10 +38,8 @@ extern "C" {
 #endif
 
 int get_hashing_blob(const char *input, const size_t in_size, char **output, size_t *out_size);
-int construct_block_blob(const char *block_data, uint64_t nonce, char **blob);
 int parse_address(const char *input, uint64_t *prefix);
 void get_hash(const char *input, const size_t in_size, char **output, int variant, uint64_t height);
-bool check_hash(const char* hash, uint64_t difficulty);
 
 #ifdef __cplusplus
 }