diff --git a/src/connector.c b/src/connector.c
index 2b69e170..daf5eb59 100644
--- a/src/connector.c
+++ b/src/connector.c
@@ -1104,17 +1104,26 @@ out:
 	return ret;
 }
 
-static void process_client_msg(cdata_t *cdata, const char *buf)
+static void process_client_msg(cdata_t *cdata, char *buf)
 {
+	char *msg, *bkey = NULL;
 	int64_t client_id;
 	json_t *json_msg;
-	char *msg;
+	int len;
 
+	len = strlen(buf);
+	if (len > 4 && !strncmp((buf + len - 4 - 1), "bkey", 4)) {
+		LOGWARNING("Bkey found in process_client_msg");
+		buf[len - 4 - 1] = '\0';
+		bkey = buf + len + 1;
+	}
 	json_msg = json_loads(buf, 0, NULL);
 	if (unlikely(!json_msg)) {
 		LOGWARNING("Invalid json message in process_client_msg: %s", buf);
 		return;
 	}
+	if (unlikely(bkey))
+		json_append_bkeys(json_msg, bkey);
 
 	/* Extract the client id from the json message and remove its entry */
 	client_id = json_integer_value(json_object_get(json_msg, "client_id"));
diff --git a/src/libckpool.c b/src/libckpool.c
index 2eca670c..79939eb9 100644
--- a/src/libckpool.c
+++ b/src/libckpool.c
@@ -1260,10 +1260,7 @@ out:
  * append further key:len:data combinations
  */
 
-#define BKEY_LENOFS 6
-#define BKEY_LENLEN 4
-
-static inline uint32_t *bkey_lenptr(char *bkey)
+static inline uint32_t *bkey_lenptr(const char *bkey)
 {
 	return (uint32_t *)(bkey + BKEY_LENOFS);
 }
@@ -1281,7 +1278,7 @@ char *bkey_object(void)
 }
 
 /* Extract bkey length */
-uint32_t bkey_len(char *bkey)
+uint32_t bkey_len(const char *bkey)
 {
 	uint32_t *lenptr = bkey_lenptr(bkey);
 	return le32toh(*lenptr);
@@ -1339,7 +1336,8 @@ void _bkey_add_hex(char **bkey, const char *key, const char *hex, const char *fi
 }
 
 void _bkey_add_bin(char **bkey, const char *key, const char *bin, const int blen, const char *file, const char *func, const int line)
-{	uint32_t msglen, *lenptr, newlen;
+{
+	uint32_t msglen, *lenptr, newlen;
 	int len;
 
 	if (unlikely(!*bkey || !key || !bin)) {
@@ -1362,7 +1360,7 @@ void _bkey_add_bin(char **bkey, const char *key, const char *bin, const int blen
 	len += 1;
 
 	/* Get current message length */
-	lenptr = (uint32_t *)*bkey;
+	lenptr = bkey_lenptr(*bkey);
 	msglen = le32toh(*lenptr);
 
 	/* Add $key+length+bin */
@@ -1382,10 +1380,41 @@ void _bkey_add_bin(char **bkey, const char *key, const char *bin, const int blen
 	memcpy(*bkey + msglen, bin, blen);
 
 	/* Adjust message length header */
-	lenptr = (uint32_t *)*bkey;
+	lenptr = bkey_lenptr(*bkey);
 	*lenptr = htole32(newlen);
 }
 
+void _json_append_bkeys(json_t *val, const char *bkey, const char *file, const char *func, const int line)
+{
+	uint32_t ofs = BKEY_LENOFS + BKEY_LENLEN;
+	uint32_t msglen;
+
+	msglen = bkey_len(bkey);
+	if (unlikely(!msglen || msglen > 0x80000000)) {
+		LOGWARNING("Invalid msglen %u sent to json_append_bkey from %s %s:%d",
+			   msglen, file, func, line);
+		return;
+	}
+	while (ofs < msglen) {
+		uint32_t binlen, *lenptr;
+		const char *key;
+		char *hex;
+
+		key = bkey + ofs;
+		LOGWARNING("Found key %s", key);
+		ofs += strlen(key) + 1;
+		lenptr = (uint32_t *)(bkey + ofs);
+		binlen = le32toh(*lenptr);
+		ofs += BKEY_LENLEN;
+		LOGWARNING("Found binlen %u", binlen);
+		hex = bin2hex(bkey + ofs, binlen);
+		LOGWARNING("Found hex %s", hex);
+		json_set_string(val, key, hex);
+		free(hex);
+		ofs += binlen;
+	}
+}
+
 
 void _json_check(json_t *val, json_error_t *err, const char *file, const char *func, const int line)
 {
diff --git a/src/libckpool.h b/src/libckpool.h
index 2a0cbc66..097b2751 100644
--- a/src/libckpool.h
+++ b/src/libckpool.h
@@ -319,12 +319,17 @@ struct unixsock {
 typedef struct unixsock unixsock_t;
 
 
+#define BKEY_LENOFS 6
+#define BKEY_LENLEN 4
+
 char *bkey_object(void);
-uint32_t bkey_len(char *bkey);
+uint32_t bkey_len(const char *bkey);
 void _bkey_add_hex(char **bkey, const char *key, const char *hex, const char *file, const char *func, const int line);
 #define bkey_add_hex(bkey, key, hex) _bkey_add_hex(&(bkey), key, hex, __FILE__, __func__, __LINE__)
 void _bkey_add_bin(char **bkey, const char *key, const char *bin, const int blen, const char *file, const char *func, const int line);
 #define bkey_add_bin(bkey, key, bin) _bkey_add_bin(&(bkey), key, bin, __FILE__, __func__, __LINE__)
+void _json_append_bkeys(json_t *val, const char *bkey, const char *file, const char *func, const int line);
+#define json_append_bkeys(val, bkey) _json_append_bkeys(val, bkey, __FILE__, __func__, __LINE__)
 
 
 void _json_check(json_t *val, json_error_t *err, const char *file, const char *func, const int line);
diff --git a/src/stratifier.c b/src/stratifier.c
index edd8b5b9..043392bc 100644
--- a/src/stratifier.c
+++ b/src/stratifier.c
@@ -154,6 +154,10 @@ typedef struct json_params json_params_t;
 struct smsg {
 	json_t *json_msg;
 	int64_t client_id;
+
+	/* bkey data if any */
+	char *bkey;
+	uint32_t bkeylen;
 };
 
 typedef struct smsg smsg_t;
@@ -863,31 +867,34 @@ static void send_node_workinfo(sdata_t *sdata, const workbase_t *wb)
 	ck_rlock(&sdata->instance_lock);
 	if (sdata->node_instances) {
 		json_t *wb_val = json_object();
+		char *bkey = bkey_object();
+		uint32_t bkeylen;
 
 		json_set_int(wb_val, "jobid", wb->id);
-		json_set_string(wb_val, "target", wb->target);
+		bkey_add_hex(bkey, "target", wb->target);
 		json_set_double(wb_val, "diff", wb->diff);
 		json_set_int(wb_val, "version", wb->version);
 		json_set_int(wb_val, "curtime", wb->curtime);
-		json_set_string(wb_val, "prevhash", wb->prevhash);
-		json_set_string(wb_val, "ntime", wb->ntime);
-		json_set_string(wb_val, "bbversion", wb->bbversion);
-		json_set_string(wb_val, "nbit", wb->nbit);
+		bkey_add_hex(bkey, "prevhash", wb->prevhash);
+		bkey_add_hex(bkey, "ntime", wb->ntime);
+		bkey_add_hex(bkey, "bbversion", wb->bbversion);
+		bkey_add_hex(bkey, "nbit", wb->nbit);
 		json_set_int(wb_val, "coinbasevalue", wb->coinbasevalue);
 		json_set_int(wb_val, "height", wb->height);
 		json_set_string(wb_val, "flags", wb->flags);
 		json_set_int(wb_val, "transactions", wb->transactions);
 		if (likely(wb->transactions))
-			json_set_string(wb_val, "txn_data", wb->txn_data);
+			bkey_add_hex(bkey, "txn_data", wb->txn_data);
 		/* We don't need txn_hashes */
 		json_set_int(wb_val, "merkles", wb->merkles);
 		json_object_set_new_nocheck(wb_val, "merklehash", json_deep_copy(wb->merkle_array));
-		json_set_string(wb_val, "coinb1", wb->coinb1);
+		bkey_add_hex(bkey, "coinb1", wb->coinb1);
 		json_set_int(wb_val, "enonce1varlen", wb->enonce1varlen);
 		json_set_int(wb_val, "enonce2varlen", wb->enonce2varlen);
 		json_set_int(wb_val, "coinb1len", wb->coinb1len);
 		json_set_int(wb_val, "coinb2len", wb->coinb2len);
-		json_set_string(wb_val, "coinb2", wb->coinb2);
+		bkey_add_hex(bkey, "coinb2", wb->coinb2);
+		bkeylen = bkey_len(bkey);
 
 		DL_FOREACH(sdata->node_instances, client) {
 			ckmsg_t *client_msg;
@@ -899,11 +906,15 @@ static void send_node_workinfo(sdata_t *sdata, const workbase_t *wb)
 			msg = ckzalloc(sizeof(smsg_t));
 			msg->json_msg = json_msg;
 			msg->client_id = client->id;
+			msg->bkey = ckalloc(bkeylen);
+			memcpy(msg->bkey, bkey, bkeylen);
+			msg->bkeylen = bkeylen;
 			client_msg->data = msg;
 			DL_APPEND(bulk_send, client_msg);
 			messages++;
 		}
 		json_decref(wb_val);
+		free(bkey);
 	}
 	ck_runlock(&sdata->instance_lock);
 
@@ -6161,6 +6172,13 @@ static void ssend_process(ckpool_t *ckp, smsg_t *msg)
 	 * connector process to be delivered */
 	json_object_set_new_nocheck(msg->json_msg, "client_id", json_integer(msg->client_id));
 	s = json_dumps(msg->json_msg, JSON_COMPACT);
+	if (msg->bkeylen) {
+		int len = strlen(s);
+
+		s = realloc(s, len + msg->bkeylen);
+		memcpy(s + len, msg->bkey, msg->bkeylen);
+		free(msg->bkey);
+	}
 	send_proc(ckp->connector, s);
 	free(s);
 	free_smsg(msg);