diff --git a/mmgen/node_tools/BlocksInfo.py b/mmgen/node_tools/BlocksInfo.py
index 4fbe371..46226c5 100644
--- a/mmgen/node_tools/BlocksInfo.py
+++ b/mmgen/node_tools/BlocksInfo.py
@@ -521,6 +521,8 @@ class JSONBlocksInfo(BlocksInfo):
 
 	def __init__(self,cmd_args,opt,rpc):
 		super().__init__(cmd_args,opt,rpc)
+		if opt.json_raw:
+			self.output_block = self.output_block_raw
 		Msg_r('{')
 
 	async def process_blocks(self):
@@ -528,12 +530,17 @@ class JSONBlocksInfo(BlocksInfo):
 		await super().process_blocks()
 		Msg_r(']')
 
+	def output_block_raw(self,data,n):
+		Msg_r( (', ','')[n==0] + json.dumps(data._asdict()) )
+
 	def output_block(self,data,n):
 		def gen():
 			for k,v in data._asdict().items():
 				vn = self.fields[k].varname
 				yield ( k, (self.fmt_funcs[vn](v) if vn in self.fmt_funcs else v) )
-		Msg_r(json.dumps(dict(gen())))
+		Msg_r( (', ','')[n==0] + json.dumps(dict(gen())))
+
+	def print_header(self): pass
 
 	async def output_stats(self,res):
 		def gen(data):
diff --git a/mmnode-blocks-info b/mmnode-blocks-info
index 7fb9966..6a1b74d 100755
--- a/mmnode-blocks-info
+++ b/mmnode-blocks-info
@@ -29,7 +29,7 @@ opts_data = {
 		('hashes',     True,   'stats',      'none'),
 		('stats',      'none', 'stats_only', False),
 		('stats_only', True,   'no_header',  True),
-		('json',       True,   'no_header',  True),
+		('json_raw',   True,   'json',       True),
 	],
 	'text': {
 		'desc':    'Display information about a block or range of blocks',
@@ -44,6 +44,7 @@ opts_data = {
 --, --longhelp        Print help message for long options (common options)
 -H, --hashes          Display only block numbers and hashes
 -j, --json            Produce JSON output
+-J, --json-raw        Produce JSON output with unformatted values
 -m, --miner-info      Display miner info in coinbase transaction
 -M, --raw-miner-info  Display miner info in uninterpreted form
 -n, --no-header       Don’t print the column header