Bitcoin (BTC) JSON-RPC API

GetBlock provides fast and reliable access to Bitcoin nodes via JSON-RPC API. Connect to the Bitcoin network without running your own infrastructure.

The Bitcoin (BTC) JSON-RPC API exposes the Bitcoin Core node interface: methods for reading blocks, transactions, and UTXOs, inspecting the mempool, building and broadcasting raw transactions, working with PSBTs, and estimating fees. Requests POST a JSON-RPC 2.0 body to the endpoint; the method is selected by the body.

Base URL

https://shared.eu-central-1.getblock.io/<ACCESS-TOKEN>/

Available API Methods

GetBlock provides access to Bitcoin Core JSON-RPC methods. Methods that require wallet or node-administration privileges are not available on shared endpoints and are omitted below.

Blockchain Methods

Method	Description
getbestblockhash	Returns the hash of the best (tip) block in the most-work fully-validated chain
getblock	Returns information about a block given its hash
getblockchaininfo	Returns an object with state information about blockchain processing, including the chain, height, best block hash, difficulty, verification progress, and softfork status
getblockcount	Returns the height of the most-work fully-validated chain
getblockhash	Returns the hash of the block at the given height in the best-block chain
getblockheader	Returns the block header for a given block hash
getblockstats	Computes per-block statistics for a given block, identified by hash or height
getchaintips	Returns information about all known tips in the block tree, including the main chain and any orphaned branches
getchaintxstats	Computes statistics about the total number and rate of transactions in the chain over a window of blocks ending at a given block
getdifficulty	Returns the proof-of-work difficulty as a multiple of the minimum difficulty
getindexinfo	Returns the status of the optional block indexes, such as the transaction index and the coinstats index, including whether each is synced and its best block height
gettxout	Returns details about an unspent transaction output (utxo)
gettxoutproof	Returns a hex-encoded proof that one or more transactions were included in a block
preciousblock	Treats a block as if it were received before others with the same work, changing tip selection

Mempool Methods

Method	Description
getmempoolinfo	Returns details about the active state of the transaction memory pool, including the number of transactions, total size, and minimum fee rate
getrawmempool	Returns the transaction ids in the memory pool
getmempoolentry	Returns mempool data for a specific transaction that is currently in the memory pool
getmempoolancestors	Returns the in-mempool ancestors of a transaction: the unconfirmed transactions it depends on
getmempooldescendants	Returns the in-mempool descendants of a transaction: the unconfirmed transactions that depend on it
testmempoolaccept	Checks whether one or more raw transactions would be accepted into the mempool, without broadcasting them

Raw Transactions Methods

Method	Description
getrawtransaction	Returns the raw transaction data for a given transaction id
sendrawtransaction	Submits a raw, fully signed transaction (serialized as hex) to the network
createrawtransaction	Creates an unsigned raw transaction from a set of inputs and outputs and returns it as hex
decoderawtransaction	Decodes a serialized, hex-encoded transaction into a json object
decodescript	Decodes a hex-encoded script and returns details about it, including its assembly, type, and the addresses it pays to
combinerawtransaction	Combines multiple partially signed transactions of the same transaction into one fully signed transaction, returning the combined hex

PSBT Methods

Method	Description
createpsbt	Creates an empty partially signed bitcoin transaction (psbt) from a set of inputs and outputs, returning it as a base64 string
decodepsbt	Decodes a base64-encoded psbt into a detailed json object, including the unsigned transaction, per-input data, and per-output data
analyzepsbt	Analyzes a psbt and reports what is missing for each input, the next role in the signing workflow, and the estimated fee and virtual size
combinepsbt	Combines multiple psbts of the same transaction into one, merging the data each contains
finalizepsbt	Finalizes a psbt once all inputs are signed and, if complete, extracts the network-ready transaction
converttopsbt	Converts a raw transaction to a psbt
joinpsbts	Joins multiple distinct psbts into a single psbt by concatenating their inputs and outputs
utxoupdatepsbt	Updates a psbt with utxo information and, optionally, output descriptors, filling in the data needed for signing from the node's view of the chain

Mining Methods

Method	Description
getmininginfo	Returns mining-related information, including the current block height, difficulty, network hash rate, and mempool size
getnetworkhashps	Estimates the network hashes per second based on the last n blocks
getblocktemplate	Returns data needed to construct a block to work on, following bip 22, bip 23, bip 9, and bip 145

Utility Methods

Method	Description
estimatesmartfee	Estimates the approximate fee rate per kilobyte needed for a transaction to begin confirmation within a given number of blocks
validateaddress	Returns information about a bitcoin address, including whether it is valid and its script type
deriveaddresses	Derives one or more addresses from an output descriptor
verifymessage	Verifies a signed message against a bitcoin address, returning whether the signature is valid for the address and message

Control Methods

Method	Description
getrpcinfo	Returns runtime details about the rpc server, including the commands currently in progress and the path to the active logging file
getmemoryinfo	Returns information about memory usage, either as a human-readable summary or as raw malloc statistics depending on the mode
uptime	Returns the total number of seconds the node has been running
help	Lists all available rpc commands, or returns detailed help for a specific command when one is supplied