Bitcoin Confidential Core version v1.0.2 (64-bit)

Usage:  bitcoinc-qt [command-line options]                     



Print this help message and exit 


Maintain a full address index, used to query for the balance, txids and unspent outputs for addresses (default: 0) 


Execute command when a relevant alert is received or we see a really long fork (%s in cmd is replaced by message) 


If this block is in the chain assume that it and its ancestors are valid and potentially skip their script verification (0 to verify all, default: 0000000000000000000000000000000000000000000000000000000000000000, testnet: 0000000000000000000000000000000000000000000000000000000000000000) 


Execute command when the best block changes (%s in cmd is replaced by block hash) 


Extra transactions to keep in memory for compact block reconstructions (default: 100) 


Specify blocks directory (default: <datadir>/blocks) 


Specify configuration file. Relative paths will be prefixed by datadir location. (default: bitcoinc.conf) 


Maintain an index of outputs by coldstaking address (default: 0) 


Only index coldstaked outputs with matching stake address. Can be specified multiple times. 


Run in the background as a daemon and accept commands 


Specify data directory 


Set database cache size in megabytes (4 to 16384, default: 450) 


Database compression parameter passed to level-db (default: false) 


Maximum number of open files parameter passed to level-db (default: 64) 


Specify location of debug log file. Relative paths will be prefixed by a net-specific datadir location. (-nodebuglogfile to disable; default: debug.log) 


Specify additional configuration file, relative to the -datadir path (only useable from configuration file, not command line) 


Imports blocks from external blk000??.dat file on startup 


Keep the transaction memory pool below <n> megabytes (default: 300) 


Keep at most <n> unconnectable transactions in memory (default: 100) 


Do not keep transactions in the mempool longer than <n> hours (default: 336) 


Set the number of script verification threads (-8 to 16, 0 = auto, <0 = leave that many cores free, default: 0) 


Whether to save the mempool on shutdown and load on restart (default: 1) 


Specify pid file. Relative paths will be prefixed by a net-specific datadir location. (default: 


Reduce storage requirements by enabling pruning (deleting) of old blocks. This allows the pruneblockchain RPC to be called to delete specific blocks, and enables automatic pruning of old blocks if a target size in MiB is provided. This mode is incompatible with -txindex and -rescan. Warning: Reverting this setting requires re-downloading the entire blockchain. (default: 0 = disable pruning blocks, 1 = allow manual pruning via RPC, >=550 = automatically prune block files to stay under the specified target size in MiB) 


Rebuild chain state and block index from the blk*.dat files on disk 


Rebuild chain state from the currently indexed blocks 


Skip verifying rangeproofs when reindexing or importing. 


Maintain a full spent index, used to query the spending txid and input index for an outpoint (default: 0) 


Create new files with system default permissions, instead of umask 077 (only effective with disabled wallet functionality) 


Maintain a timestamp index for block hashes, used to query blocks hashes by a range of timestamps (default: 0) 


Maintain a full transaction index, used by the getrawtransaction rpc call (default: 1) 


Print version and exit 

Connection options:


Add a node to connect to and attempt to keep the connection open (see the `addnode` RPC command help for more info). This option can be specified multiple times to add multiple nodes. 


Threshold for disconnecting misbehaving peers (default: 100) 


Number of seconds to keep misbehaving peers from reconnecting (default: 86400) 


Bind to given address and always listen on it. Use [host]:port notation for IPv6 


Connect only to the specified node; -noconnect disables automatic connections (the rules for this peer are the same as for -addnode). This option can be specified multiple times to connect to multiple nodes. 


Discover own IP addresses (default: 1 when listening and no -externalip or -proxy) 


Allow DNS lookups for -addnode, -seednode and -connect (default: 1) 


Query for peer addresses via DNS lookup, if low on addresses (default: 1 unless -connect used) 


Send reject messages per BIP61 (default: 1) 


Specify your own public address 


Node will search for peers (default: 1) 


Always query for peer addresses via DNS lookup (default: 0) 


Accept connections from outside (default: 1 if no -proxy or -connect) 


Automatically create Tor hidden service (default: 1) 


Maintain at most <n> connections to peers (default: 125) 


Maximum per-connection receive buffer, <n>*1000 bytes (default: 5000) 


Maximum per-connection send buffer, <n>*1000 bytes (default: 1000) 


Maximum allowed median peer time offset adjustment. Local perspective of time may be influenced by peers forward or backward by this amount. (default: 4200 seconds) 


Tries to keep outbound traffic under the given target (in MiB per 24h), 0 = no limit (default: 0) 


Use separate SOCKS5 proxy to reach peers via Tor hidden services, set -noonion to disable (default: -proxy) 


Make outgoing connections only through network <net> (ipv4, ipv6 or onion). Incoming connections are not affected by this option. This option can be specified multiple times to allow multiple networks. 


Support filtering of blocks and transaction with bloom filters (default: 1) 


Relay non-P2SH multisig (default: 1) 


Listen for connections on <port> (default: 9789 or testnet: 19789) 


Connect through SOCKS5 proxy, set -noproxy to disable (default: disabled) 


Randomize credentials for every proxy connection. This enables Tor stream isolation (default: 1) 


Connect to a node to retrieve peer addresses, and disconnect. This option can be specified multiple times to connect to multiple nodes. 


Specify connection timeout in milliseconds (minimum: 1, default: 5000) 


Tor control port to use if onion listening enabled (default: 


Tor control port password (default: empty) 


Use UPnP to map the listening port (default: 0) 


Bind to given address and whitelist peers connecting to it. Use [host]:port notation for IPv6 

-whitelist=<IP address or network>

Whitelist peers connecting from the given IP address (e.g. or CIDR notated network (e.g. Can be specified multiple times. Whitelisted peers cannot be DoS banned and their transactions are always relayed, even if they are already in the mempool, useful e.g. for a gateway 

Wallet options:


What type of addresses to use ("legacy", "p2sh-segwit", or "bech32", default: "p2sh-segwit") 


Group outputs by address, selecting all or none, instead of selecting on a per-output basis. Privacy is improved as an address is only used once (unless someone sends to it after spending from it), but may result in slightly higher fees as suboptimal coin selection may result due to the added limitation (default: 0) 


What type of change to use ("legacy", "p2sh-segwit", or "bech32"). Default is same as -addresstype, except when -addresstype=p2sh-segwit a native segwit output is used when sending to a native segwit address) 


Do not load the wallet and disable wallet RPC calls 


The fee rate (in BC/kB) that indicates your tolerance for discarding change by adding it to the fee (default: 0.0001). Note: An output is discarded if it is dust at this rate, but we will always discard up to the dust relay fee and a discard fee above that is limited by the fee estimate for the longest target 


A fee rate (in BC/kB) that will be used when fee estimation has insufficient data (default: 0.0002) 


Set key pool size to <n> (default: 1000) 


Fees (in BC/kB) smaller than this are considered zero fee for transaction creation (default: 0.001) 


Fee (in BC/kB) to add to transactions you send (default: 0.00) 


Rescan the block chain for missing wallet transactions on startup 


Attempt to recover private keys from a corrupt wallet on startup 


Spend unconfirmed change when sending transactions (default: 1) 


If paytxfee is not set, include enough fee so transactions begin confirmation on average within n blocks (default: 6) 


Upgrade wallet to latest format on startup 


Specify wallet database path. Can be specified multiple times to load multiple wallets. Path is interpreted relative to <walletdir> if it is not absolute, and will be created if it does not exist (as a directory containing a wallet.dat file and log files). For backwards compatibility this will also accept names of existing data files in <walletdir>.) 


Make the wallet broadcast transactions (default: 1) 


Specify directory to hold wallets (default: <datadir>/wallets if it exists, otherwise <datadir>) 


Execute command when a wallet transaction changes (%s in cmd is replaced by TxID) 


Send transactions with full-RBF opt-in enabled (RPC only, default: 0) 


Delete all wallet transactions and only recover those parts of the blockchain through -rescan on startup (1 = keep tx meta data e.g. account owner and payment request information, 2 = drop tx meta data) 

ZeroMQ notification options:


Generate new key pair for CurveZMQ, print and exit. 


Base64 encoded string of the z85 encoded secret key for CurveZMQ. 

-whitelistzmq=<IP address or network>

Whitelist peers connecting from the given IP address (e.g. or CIDR notated network (e.g. Can be specified multiple times. 


Enable publish hash block in <address> 


Enable publish hash transaction in <address> 


Enable publish hash transaction received by wallets in <address> 


Enable publish raw block in <address> 


Enable publish raw transaction in <address> 


Enable publish secure message in <address> 

Debugging/Testing options:


Output debugging information (default: -nodebug, supplying <category> is optional). If <category> is not supplied or if <category> = 1, output all debugging information. <category> can be: net, tor, mempool, http, bench, zmq, db, rpc, estimatefee, addrman, selectcoins, reindex, cmpctblock, rand, prune, proxy, mempoolrej, libevent, coindb, qt, leveldb, smsg, ringct, pos, hdwallet. 


Exclude debugging information for a category. Can be used in conjunction with -debug=1 to output debug logs for all categories except one or more specified categories. 


Show all debugging options (usage: --help -help-debug) 


Include IP addresses in debug output (default: 0) 


Prepend debug output with timestamp (default: 1) 


Maximum total fees (in BC) to use in a single wallet transaction or raw transaction; setting this too low may abort large transactions (default: 0.50) 


Send trace/debug info to console (default: 1 when no -daemon. To disable logging to file, set -nodebuglogfile) 


Shrink debug.log file on client startup (default: 1 when no -debug) 


Append comment to the user agent string 

Chain selection options:


Use the test chain 

Node relay options:


Equivalent bytes per sigop in transactions for relay and mining (default: 20) 


Relay and mine data carrier transactions (default: 1) 


Maximum size of data in data carrier transactions we relay and mine (default: 83) 


Enable transaction replacement in the memory pool (default: 1) 


Fees (in BC/kB) smaller than this are considered zero fee for relaying, mining and transaction creation (default: 0.00001) 


Force relay of transactions from whitelisted peers even if they violate local relay policy (default: 1) 


Accept relayed transactions received from whitelisted peers even when not relaying transactions (default: 1) 

Block creation options:


Set maximum BIP141 block weight (default: 3996000) 


Set lowest fee rate (in BC/kB) for transactions to be included in block creation. (default: 0.00001) 

RPC server options:


Display human readable time strings in local timezone (default: false) 


Display human readable time strings in UTC (default: false) 


Accept public REST requests (default: 0) 


Allow JSON-RPC connections from specified source. Valid for <ip> are a single IP (e.g., a network/netmask (e.g. or a network/CIDR (e.g. This option can be specified multiple times 


Username and hashed password for JSON-RPC connections. The field <userpw> comes in the format: <USERNAME>:<SALT>$<HASH>. A canonical python script is included in share/rpcauth. The client then connects normally using the rpcuser=<USERNAME>/rpcpassword=<PASSWORD> pair of arguments. This option can be specified multiple times 


Bind to given address to listen for JSON-RPC connections. This option is ignored unless -rpcallowip is also passed. Port is optional and overrides -rpcport. Use [host]:port notation for IPv6. This option can be specified multiple times (default: and ::1 i.e., localhost, or if -rpcallowip has been specified, and :: i.e., all addresses) 


Location of the auth cookie. Relative paths will be prefixed by a net-specific datadir location. (default: data dir) 


Allow JSON-RPC connections from specified domain (e.g. http://localhost:4200 or "*"). This needs to be set if you are using the BitcoinC GUI in a browser. 


Password for JSON-RPC connections 


Listen for JSON-RPC connections on <port> (default: 9790 or testnet: 19790) 


Sets the serialization of raw transaction or block hex returned in non-verbose mode, non-segwit(0) or segwit(1) (default: 1) 


Set the number of threads to service RPC calls (default: 4) 


Username for JSON-RPC connections 


Accept command line and JSON-RPC commands 

UI Options:


Choose data directory on startup (default: 0) 


Set language, for example "de_DE" (default: system locale) 


Start minimized 


Reset all settings changed in the GUI 


Set SSL root certificates for payment request (default: -system-) 


Show splash screen on startup (default: 1) 

SMSG Commands:


Enable secure messaging. (default: true) 


Execute command when a message is received. (%s in cmd is replaced by receiving address) 


Scan for incoming messages on new wallet keys. (default: false) 


Scan the block chain for public key addresses on startup. (default: false) 


Scan incoming blocks for public key addresses. (default: false) 

BitcoinC wallet Commands:


Generate a random master key and main account if no master key exists. (default: false) 


Number of keys to load into the lookahead pool per chain. (default: 64) 


On saving a key from the lookahead pool, save all unsaved keys leading up to it too. (default: true) 

Staking Commands:


Milliseconds between stake attempts. Lowering this param will not result in more stakes. (default: 500) 


Minimum time in seconds between successful stakes (default: 0) 


Ensure available balance remains above reservebalance. (default: 0) 


Stake your coins to support network and gain reward (default: true) 


Number of threads to start for staking, max 1 per active wallet, will divide wallets evenly between threads (default: 1)