JSON API

Some API calls are available with CORS headers if you add a cors=true paramter to the request

JSON Format
Single Block
  • http://blockchain.info/rawblock/$block_index
  • http://blockchain.info/rawblock/$block_hash
  • http://blockchain.info/block-index/$block_index?format=json
 
{
	"hash":"0000000000000bae09a7a393a8acded75aa67e46cb81f7acaa5ad94f9eacd103",
	"ver":1,	
	"prev_block":"00000000000007d0f98d9edca880a6c124e25095712df8952e0439ac7409738a",
	"mrkl_root":"935aa0ed2e29a4b81e0c995c39e06995ecce7ddbebb26ed32d550a72e8200bf5",
	"time":1322131230,
	"bits":437129626,
	"nonce":2964215930,
	"n_tx":22,
	"size":9195,
	"block_index":818044,
	"main_chain":true,
	"height":154595,
	"received_time":1322131301,
	"relayed_by":"108.60.208.156",
	"tx":[--Array of Transactions--]
{
Single Transaction
  • http://blockchain.info/rawtx/$tx_index
  • http://blockchain.info/rawtx/$tx_hash
  • http://blockchain.info/tx-index/$tx_index?format=json
 
{
	"hash":"b6f6991d03df0e2e04dafffcd6bc418aac66049e2cd74b80f14ac86db1e3f0da",
	"ver":1,
	"vin_sz":1,
	"vout_sz":2,
	"lock_time":"Unavailable",
	"size":258,
	"relayed_by":"64.179.201.80",
    "block_height, 12200,
	"tx_index":"12563028",
	"inputs":[
			
			
			{
				"prev_out":{
					"hash":"a3e2bcc9a5f776112497a32b05f4b9e5b2405ed9",
					"value":"100000000",
					"tx_index":"12554260",
					"n":"2"
				},
				"scriptSig":"Unavailable"
			}
			
		],
	"out":[
				
				{
					"value":"98000000",
					"hash":"29d6a3540acfa0a950bef2bfdc75cd51c24390fd",
					"scriptPubKey":"Unavailable"
				},
		        
				{
					"value":"2000000",
					"hash":"17b5038a413f5c5ee288caa64cfab35a0c01914e",
					"scriptPubKey":"Unavailable"
				}
		        
		]
}
Chart Data
  • http://blockchain.info/charts/$chart-type?format=json
 
{
	"values" : [
		{ 
			"x" : 1290602498, //Unix timestamp
			"y" : 1309696.2116000003
		}]
}
Block Height
  • http://blockchain.info/block-height/$block_height?format=json
 
{ 
	"blocks" : 
	[ 
		--Array Of Blocks at the specified height-- 
	]
}
Single Address
  • http://blockchain.info/address/$hash_160?format=json
  • http://blockchain.info/address/$bitcoin_address?format=json
  • http://blockchain.info/rawaddr/$bitcoin_address
  • Optional limit parameter to show n transactions e.g. &limit=50
 
{
	"hash160":"660d4ef3a743e3e696ad990364e555c271ad504b",
	"address":"1AJbsFZ64EpEfS5UAjAfcUG8pH8Jn3rn1F",
	"n_tx":17,
	"n_unredeemed":2,
	"total_received":1031350000,
	"total_sent":931250000,
	"final_balance":100100000,
	"txs":[--Array of Transactions--]
}
Multi Address
  • http://blockchain.info/multiaddr?active=$address|$address (Multiple addresses divided by |)
 
{
	"addresses":[
	
	{
		"hash160":"641ad5051edd97029a003fe9efb29359fcee409d",
		"address":"1A8JiWcwvpY7tAopUkSnGuEYHmzGYfZPiq",
		"n_tx":4,
		"total_received":1401000000,
		"total_sent":1000000,
		"final_balance":1400000000
	},
	
	{
		"hash160":"ddbeb8b1a5d54975ee5779cf64573081a89710e5",
		"address":"1MDUoxL1bGvMxhuoDYx6i11ePytECAk9QK",
		"n_tx":0,
		"total_received":0,
		"total_sent":0,
		"final_balance":0
	},
	
	"txs":[--Latest 50 Transactions--]
Unspent outputs
  • http://blockchain.info/unspent?active=$address
  • Multiple Addresses Allowed seperated by "|"
 
{
	"unspent_outputs":[
		{
			"tx_age":"1322659106",
			"tx_hash":"e6452a2cb71aa864aaa959e647e7a4726a22e640560f199f79b56b5502114c37",
			"tx_index":"12790219",
			"tx_output_n":"0",	
			"script":"76a914641ad5051edd97029a003fe9efb29359fcee409d88ac", (Hex encoded)
			"value":"5000661330"
		}
	]
}
Latest Block
  • http://blockchain.info/latestblock
 
{
	"hash":"0000000000000538200a48202ca6340e983646ca088c7618ae82d68e0c76ef5a",
	"time":1325794737,
	"block_index":841841,
	"height":160778,
	"txIndexes":[13950369,13950510,13951472]	
 }
Unconfirmed Transactions
  • http://blockchain.info/unconfirmed-transactions?format=json
 
{
	"txs":[--Array of Transactions--]
}
Blocks
  • Blocks for one day: http://blockchain.info/blocks/$time_in_milliseconds?format=json
  • Blocks for specific pool: http://blockchain.info/blocks/$pool_name?format=json
 
{
	"blocks" : [ 
	{
		"height" : 166107, 
		"hash" : "00000000000003823fa3667d833a354a437bdecf725f1358b17f949c991bfe0a",
		"time" : 1328830483
	},
	{
		"height" : 166104, 
		"hash" : "00000000000008a34f292bfe3098b6eb40d9fd40db65d29dc0ee6fe5fa7d7995",
		"time" : 1328828041
	}]
}
Inventory Data
  • http://blockchain.info/inv/$hash?format=json
 
{
	"hash" : "d1d556eac2999d1a00fd3cb181156b5af8bf90b0d981ae759d9bf46cf5ac062b",
	"type" : "Transaction",
	"initial_time" : "1325795299781",
	"initial_ip" : "70.67.50.4",
	"probable_owners" : [
		{"ip" : "178.202.243.102", "confidence" : 20 },{"ip" : "70.67.50.4", "confidence" : 17 },{"ip" : "82.182.75.212", "confidence" : 9 }
	],
	"nconnected" : "2311",
	"relayed_count" : "2299",
	"relayed_percent" : "99",
	"mining_nodes" : [
		 {"link" : "https://deepbit.net", "name" : "Deepbit"}, {"link" : "https://deepbit.net", "name" : "Deepbit"}
	]
}