.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.47.4. .TH BITCOIND "1" "December 2016" "bitcoind v0.13.2.0" "User Commands" .SH NAME bitcoind \- manual page for bitcoind v0.13.2.0 .SH DESCRIPTION Bitcoin Core Daemon version v0.13.2.0 .SS "Usage:" .TP bitcoind [options] Start Bitcoin Core Daemon .SH OPTIONS .HP \-? .IP Print this help message and exit .HP \fB\-version\fR .IP Print version and exit .HP \fB\-alertnotify=\fR .IP Execute command when a relevant alert is received or we see a really long fork (%s in cmd is replaced by message) .HP \fB\-blocknotify=\fR .IP Execute command when the best block changes (%s in cmd is replaced by block hash) .HP \fB\-checkblocks=\fR .IP How many blocks to check at startup (default: 6, 0 = all) .HP \fB\-checklevel=\fR .IP How thorough the block verification of \fB\-checkblocks\fR is (0\-4, default: 3) .HP \fB\-conf=\fR .IP Specify configuration file (default: bitcoin.conf) .HP \fB\-daemon\fR .IP Run in the background as a daemon and accept commands .HP \fB\-datadir=\fR .IP Specify data directory .HP \fB\-dbcache=\fR .IP Set database cache size in megabytes (4 to 16384, default: 300) .HP \fB\-loadblock=\fR .IP Imports blocks from external blk000??.dat file on startup .HP \fB\-maxorphantx=\fR .IP Keep at most unconnectable transactions in memory (default: 100) .HP \fB\-maxmempool=\fR .IP Keep the transaction memory pool below megabytes (default: 300) .HP \fB\-mempoolexpiry=\fR .IP Do not keep transactions in the mempool longer than hours (default: 72) .HP \fB\-par=\fR .IP Set the number of script verification threads (\fB\-2\fR to 16, 0 = auto, <0 = leave that many cores free, default: 0) .HP \fB\-pid=\fR .IP Specify pid file (default: bitcoind.pid) .HP \fB\-prune=\fR .IP Reduce storage requirements by pruning (deleting) old blocks. This mode is incompatible with \fB\-txindex\fR and \fB\-rescan\fR. Warning: Reverting this setting requires re\-downloading the entire blockchain. (default: 0 = disable pruning blocks, >550 = target size in MiB to use for block files) .HP \fB\-reindex\-chainstate\fR .IP Rebuild chain state from the currently indexed blocks .HP \fB\-reindex\fR .IP Rebuild chain state and block index from the blk*.dat files on disk .HP \fB\-sysperms\fR .IP Create new files with system default permissions, instead of umask 077 (only effective with disabled wallet functionality) .HP \fB\-txindex\fR .IP Maintain a full transaction index, used by the getrawtransaction rpc call (default: 0) .PP Connection options: .HP \fB\-addnode=\fR .IP Add a node to connect to and attempt to keep the connection open .HP \fB\-banscore=\fR .IP Threshold for disconnecting misbehaving peers (default: 100) .HP \fB\-bantime=\fR .IP Number of seconds to keep misbehaving peers from reconnecting (default: 86400) .HP \fB\-bind=\fR .IP Bind to given address and always listen on it. Use [host]:port notation for IPv6 .HP \fB\-connect=\fR .IP Connect only to the specified node(s) .HP \fB\-discover\fR .IP Discover own IP addresses (default: 1 when listening and no \fB\-externalip\fR or \fB\-proxy\fR) .HP \fB\-dns\fR .IP Allow DNS lookups for \fB\-addnode\fR, \fB\-seednode\fR and \fB\-connect\fR (default: 1) .HP \fB\-dnsseed\fR .IP Query for peer addresses via DNS lookup, if low on addresses (default: 1 unless \fB\-connect\fR) .HP \fB\-externalip=\fR .IP Specify your own public address .HP \fB\-forcednsseed\fR .IP Always query for peer addresses via DNS lookup (default: 0) .HP \fB\-listen\fR .IP Accept connections from outside (default: 1 if no \fB\-proxy\fR or \fB\-connect\fR) .HP \fB\-listenonion\fR .IP Automatically create Tor hidden service (default: 1) .HP \fB\-maxconnections=\fR .IP Maintain at most connections to peers (default: 125) .HP \fB\-maxreceivebuffer=\fR .IP Maximum per\-connection receive buffer, *1000 bytes (default: 5000) .HP \fB\-maxsendbuffer=\fR .IP Maximum per\-connection send buffer, *1000 bytes (default: 1000) .HP \fB\-maxtimeadjustment\fR .IP 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) .HP \fB\-onion=\fR .IP Use separate SOCKS5 proxy to reach peers via Tor hidden services (default: \fB\-proxy\fR) .HP \fB\-onlynet=\fR .IP Only connect to nodes in network (ipv4, ipv6 or onion) .HP \fB\-permitbaremultisig\fR .IP Relay non\-P2SH multisig (default: 1) .HP \fB\-peerbloomfilters\fR .IP Support filtering of blocks and transaction with bloom filters (default: 1) .HP \fB\-port=\fR .IP Listen for connections on (default: 8333 or testnet: 18333) .HP \fB\-proxy=\fR .IP Connect through SOCKS5 proxy .HP \fB\-proxyrandomize\fR .IP Randomize credentials for every proxy connection. This enables Tor stream isolation (default: 1) .HP \fB\-rpcserialversion\fR .IP Sets the serialization of raw transaction or block hex returned in non\-verbose mode, non\-segwit(0) or segwit(1) (default: 1) .HP \fB\-seednode=\fR .IP Connect to a node to retrieve peer addresses, and disconnect .HP \fB\-timeout=\fR .IP Specify connection timeout in milliseconds (minimum: 1, default: 5000) .HP \fB\-torcontrol=\fR: .IP Tor control port to use if onion listening enabled (default: 127.0.0.1:9051) .HP \fB\-torpassword=\fR .IP Tor control port password (default: empty) .HP \fB\-whitebind=\fR .IP Bind to given address and whitelist peers connecting to it. Use [host]:port notation for IPv6 .HP \fB\-whitelist=\fR .IP Whitelist peers connecting from the given IP address (e.g. 1.2.3.4) or CIDR notated network (e.g. 1.2.3.0/24). 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 .HP \fB\-whitelistrelay\fR .IP Accept relayed transactions received from whitelisted peers even when not relaying transactions (default: 1) .HP \fB\-whitelistforcerelay\fR .IP Force relay of transactions from whitelisted peers even if they violate local relay policy (default: 1) .HP \fB\-maxuploadtarget=\fR .IP Tries to keep outbound traffic under the given target (in MiB per 24h), 0 = no limit (default: 0) .PP Wallet options: .HP \fB\-disablewallet\fR .IP Do not load the wallet and disable wallet RPC calls .HP \fB\-keypool=\fR .IP Set key pool size to (default: 100) .HP \fB\-fallbackfee=\fR .IP A fee rate (in BTC/kB) that will be used when fee estimation has insufficient data (default: 0.0002) .HP \fB\-mintxfee=\fR .IP Fees (in BTC/kB) smaller than this are considered zero fee for transaction creation (default: 0.00001) .HP \fB\-paytxfee=\fR .IP Fee (in BTC/kB) to add to transactions you send (default: 0.00) .HP \fB\-rescan\fR .IP Rescan the block chain for missing wallet transactions on startup .HP \fB\-salvagewallet\fR .IP Attempt to recover private keys from a corrupt wallet on startup .HP \fB\-spendzeroconfchange\fR .IP Spend unconfirmed change when sending transactions (default: 1) .HP \fB\-txconfirmtarget=\fR .IP If paytxfee is not set, include enough fee so transactions begin confirmation on average within n blocks (default: 2) .HP \fB\-usehd\fR .IP Use hierarchical deterministic key generation (HD) after BIP32. Only has effect during wallet creation/first start (default: 1) .HP \fB\-upgradewallet\fR .IP Upgrade wallet to latest format on startup .HP \fB\-wallet=\fR .IP Specify wallet file (within data directory) (default: wallet.dat) .HP \fB\-walletbroadcast\fR .IP Make the wallet broadcast transactions (default: 1) .HP \fB\-walletnotify=\fR .IP Execute command when a wallet transaction changes (%s in cmd is replaced by TxID) .HP \fB\-zapwallettxes=\fR .IP Delete all wallet transactions and only recover those parts of the blockchain through \fB\-rescan\fR on startup (1 = keep tx meta data e.g. account owner and payment request information, 2 = drop tx meta data) .PP Debugging/Testing options: .HP \fB\-uacomment=\fR .IP Append comment to the user agent string .HP \fB\-debug=\fR .IP Output debugging information (default: 0, supplying is optional). If is not supplied or if = 1, output all debugging information. can be: addrman, alert, bench, cmpctblock, coindb, db, http, libevent, lock, mempool, mempoolrej, net, proxy, prune, rand, reindex, rpc, selectcoins, tor, zmq. .HP \fB\-help\-debug\fR .IP Show all debugging options (usage: \fB\-\-help\fR \fB\-help\-debug\fR) .HP \fB\-logips\fR .IP Include IP addresses in debug output (default: 0) .HP \fB\-logtimestamps\fR .IP Prepend debug output with timestamp (default: 1) .HP \fB\-minrelaytxfee=\fR .IP Fees (in BTC/kB) smaller than this are considered zero fee for relaying, mining and transaction creation (default: 0.00001) .HP \fB\-maxtxfee=\fR .IP Maximum total fees (in BTC) to use in a single wallet transaction or raw transaction; setting this too low may abort large transactions (default: 0.10) .HP \fB\-printtoconsole\fR .IP Send trace/debug info to console instead of debug.log file .HP \fB\-shrinkdebugfile\fR .IP Shrink debug.log file on client startup (default: 1 when no \fB\-debug\fR) .PP Chain selection options: .HP \fB\-testnet\fR .IP Use the test chain .PP Node relay options: .HP \fB\-bytespersigop\fR .IP Equivalent bytes per sigop in transactions for relay and mining (default: 20) .HP \fB\-datacarrier\fR .IP Relay and mine data carrier transactions (default: 1) .HP \fB\-datacarriersize\fR .IP Maximum size of data in data carrier transactions we relay and mine (default: 83) .HP \fB\-mempoolreplacement\fR .IP Enable transaction replacement in the memory pool (default: 1) .PP Block creation options: .HP \fB\-blockmaxweight=\fR .IP Set maximum BIP141 block weight (default: 3000000) .HP \fB\-blockmaxsize=\fR .IP Set maximum block size in bytes (default: 750000) .HP \fB\-blockprioritysize=\fR .IP Set maximum size of high\-priority/low\-fee transactions in bytes (default: 0) .PP RPC server options: .HP \fB\-server\fR .IP Accept command line and JSON\-RPC commands .HP \fB\-rest\fR .IP Accept public REST requests (default: 0) .HP \fB\-rpcbind=\fR .IP Bind to given address to listen for JSON\-RPC connections. Use [host]:port notation for IPv6. This option can be specified multiple times (default: bind to all interfaces) .HP \fB\-rpccookiefile=\fR .IP Location of the auth cookie (default: data dir) .HP \fB\-rpcuser=\fR .IP Username for JSON\-RPC connections .HP \fB\-rpcpassword=\fR .IP Password for JSON\-RPC connections .HP \fB\-rpcauth=\fR .IP Username and hashed password for JSON\-RPC connections. The field comes in the format: :$. A canonical python script is included in share/rpcuser. This option can be specified multiple times .HP \fB\-rpcport=\fR .IP Listen for JSON\-RPC connections on (default: 8332 or testnet: 18332) .HP \fB\-rpcallowip=\fR .IP Allow JSON\-RPC connections from specified source. Valid for are a single IP (e.g. 1.2.3.4), a network/netmask (e.g. 1.2.3.4/255.255.255.0) or a network/CIDR (e.g. 1.2.3.4/24). This option can be specified multiple times .HP \fB\-rpcthreads=\fR .IP Set the number of threads to service RPC calls (default: 4) .SH COPYRIGHT Copyright (C) 2009-2016 The Bitcoin Core developers Please contribute if you find Bitcoin Core useful. Visit for further information about the software. The source code is available from . This is experimental software. Distributed under the MIT software license, see the accompanying file COPYING or . This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit and cryptographic software written by Eric Young and UPnP software written by Thomas Bernard.