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Blockchain APIQuery
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Query API
Plaintext query api to retrieve data from blockchain.com
Some API calls are available with CORS headers if you add a &cors=true parameter to the GET request
Please limit your queries to a maximum of 1 every 10 seconds. All bitcoin values are in Satoshi i.e. divide by 100000000 to get the amount in BTC
Real-time
getdifficulty- Current difficulty target as a decimal number
getblockcount- Current block height in the longest chain
latesthash- Hash of the latest block
bcperblock- Current block reward in BTC
totalbc- Total Bitcoins in circulation (delayed by up to 1 hour)
probability- Probability of finding a valid block each hash attempt
hashestowin- Average number of hash attempts needed to solve a block
nextretarget- Block height of the next difficulty re-target
avgtxsize- Average transaction size for the past 1000 blocks. Change the number of blocks by passing an integer as the second argument e.g. avgtxsize/2000
avgtxvalue- Average transaction value (1000 Default)
interval- Average time between blocks in seconds
eta- Estimated time until the next block (in seconds)
avgtxnumber- Average number of transactions per block (100 Default)
Address Lookups
To filter by x number of confirmations include the confirmations parameter
e.g. /q/addressbalance/1EzwoHtiXB4iFwedPr49iywjZn2nnekhoj?confirmations=6
to only include transactions with 6 or more confirmations. This is extremely important if you are processing valuable transactions.
getreceivedbyaddress/$address- Get the total number of bitcoins received by an address (in satoshi). Multiple addresses separated by | Do not use to process payments without the confirmations parameter
Add the parameters start_time and end_time to restrict received by to a specific time period. Provided times should be a unix timestamp in milliseconds. Multiple addresses separated by |
getsentbyaddress/$address- Get the total number of bitcoins send by an address (in satoshi). Multiple addresses separated by | Do not use to process payments without the confirmations parameter
addressbalance/$address- Get the balance of an address (in satoshi). Multiple addresses separated by | Do not use to process payments without the confirmations parameter
addressfirstseen/$address- Timestamp of the block an address was first confirmed in.
Transactions Lookups
txtotalbtcoutput/$txHash- Get total output value of a transaction (in satoshi)
txtotalbtcinput/$txHash- Get total input value of a transaction (in satoshi)
txfee/$txHash- Get fee included in a transaction (in satoshi)
txresult/$txHash/$address- Calculate the result of a transaction sent or received to Address. Multiple addresses separated by |
Tools
addresstohash/$address- Converts a bitcoin address to a hash 160
hashtoaddress/$hash- Converts a hash 160 to a bitcoin address
hashpubkey/$pubkey- Converts a public key to a hash 160
addrpubkey/$pubkey- Converts a public key to an Address
pubkeyaddr/$address- Converts an address to public key (if available)
Misc
unconfirmedcount- Number of pending unconfirmed transactions
24hrprice- 24 hour weighted price from the largest exchanges
marketcap- USD market cap (based on 24 hour weighted price)
24hrtransactioncount- Number of transactions in the past 24 hours
24hrbtcsent- Number of btc sent in the last 24 hours (in satoshi)
hashrate- Estimated network hash rate in gigahash
rejected- Lookup the reason why the provided tx or block hash was rejected (if any)
