Bitcoin Core v0.20.1

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  • Version: v0.20.1
  • Tag: v0.20.1
  • Release Date: 2020-08-03
  • Docker Pull Command:
    • docker pull ghcr.io/mocacinno/mocacinno/bitcoin_core_docker:v20.1
    • docker pull mocacinno/btc_core:v20.1
  • Compiled by: Mocacinno
  • Changelog: View Changelog

comments about the image

  • used a manually compiled boost 1.66.0 instead of the system’s boost version
  • used gcc10
  • actually used the builder to build db4 from source
  • added parameters to ./configure

flags and parameters

starting the daemon

bash-4.4$ bitcoind -?
Bitcoin Core version v0.20.1.0-g7ff64311bee570874c4f0dfa18f518552188df08

Usage:  bitcoind [options]                     Start Bitcoin Core

Options:

  -?
       Print this help message and exit

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

  -assumevalid=<hex>
       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:
       0000000000000000000f2adce67e49b0b6bdeb9de8b7c3d7e93b21e7fc1e819d,
       testnet:
       000000000000056c49030c174179b52a928c870e6e8a822c75973b7970cfbd01)

  -blockfilterindex=<type>
       Maintain an index of compact filters by block (default: 0, values:
       basic). If <type> is not supplied or if <type> = 1, indexes for
       all known types are enabled.

  -blocknotify=<cmd>
       Execute command when the best block changes (%s in cmd is replaced by
       block hash)

  -blockreconstructionextratxn=<n>
       Extra transactions to keep in memory for compact block reconstructions
       (default: 100)

  -blocksdir=<dir>
       Specify directory to hold blocks subdirectory for *.dat files (default:
       <datadir>)

  -blocksonly
       Whether to reject transactions from network peers. Automatic broadcast
       and rebroadcast of any transactions from inbound peers is
       disabled, unless '-whitelistforcerelay' is '1', in which case
       whitelisted peers' transactions will be relayed. RPC transactions
       are not affected. (default: 0)

  -conf=<file>
       Specify configuration file. Relative paths will be prefixed by datadir
       location. (default: bitcoin.conf)

  -daemon
       Run in the background as a daemon and accept commands

  -datadir=<dir>
       Specify data directory

  -dbcache=<n>
       Maximum database cache size <n> MiB (4 to 16384, default: 450). In
       addition, unused mempool memory is shared for this cache (see
       -maxmempool).

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

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

  -loadblock=<file>
       Imports blocks from external file on startup

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

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

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

  -par=<n>
       Set the number of script verification threads (-16 to 15, 0 = auto, <0 =
       leave that many cores free, default: 0)

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

  -pid=<file>
       Specify pid file. Relative paths will be prefixed by a net-specific
       datadir location. (default: bitcoind.pid)

  -prune=<n>
       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)

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

  -reindex-chainstate
       Rebuild chain state from the currently indexed blocks. When in pruning
       mode or if blocks on disk might be corrupted, use full -reindex
       instead.

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

  -txindex
       Maintain a full transaction index, used by the getrawtransaction rpc
       call (default: 0)

  -version
       Print version and exit

Connection options:

  -addnode=<ip>
       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.

  -asmap=<file>
       Specify asn mapping used for bucketing of the peers (default:
       ip_asn.map). Relative paths will be prefixed by the net-specific
       datadir location.

  -banscore=<n>
       Threshold for disconnecting and discouraging misbehaving peers (default:
       100)

  -bantime=<n>
       Default duration (in seconds) of manually configured bans (default:
       86400)

  -bind=<addr>
       Bind to given address and always listen on it. Use [host]:port notation
       for IPv6

  -connect=<ip>
       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
       Discover own IP addresses (default: 1 when listening and no -externalip
       or -proxy)

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

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

  -externalip=<ip>
       Specify your own public address

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

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

  -listenonion
       Automatically create Tor hidden service (default: 1)

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

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

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

  -maxtimeadjustment
       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)

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

  -onion=<ip:port>
       Use separate SOCKS5 proxy to reach peers via Tor hidden services, set
       -noonion to disable (default: -proxy)

  -onlynet=<net>
       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.

  -peerbloomfilters
       Support filtering of blocks and transaction with bloom filters (default:
       0)

  -permitbaremultisig
       Relay non-P2SH multisig (default: 1)

  -port=<port>
       Listen for connections on <port> (default: 8333, testnet: 18333,
       regtest: 18444)

  -proxy=<ip:port>
       Connect through SOCKS5 proxy, set -noproxy to disable (default:
       disabled)

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

  -seednode=<ip>
       Connect to a node to retrieve peer addresses, and disconnect. This
       option can be specified multiple times to connect to multiple
       nodes.

  -timeout=<n>
       Specify connection timeout in milliseconds (minimum: 1, default: 5000)

  -torcontrol=<ip>:<port>
       Tor control port to use if onion listening enabled (default:
       127.0.0.1:9051)

  -torpassword=<pass>
       Tor control port password (default: empty)

  -whitebind=<[permissions@]addr>
       Bind to given address and whitelist peers connecting to it. Use
       [host]:port notation for IPv6. Allowed permissions are
       bloomfilter (allow requesting BIP37 filtered blocks and
       transactions), noban (do not ban for misbehavior), forcerelay
       (relay transactions that are already in the mempool; implies
       relay), relay (relay even in -blocksonly mode), and mempool
       (allow requesting BIP35 mempool contents). Specify multiple
       permissions separated by commas (default: noban,mempool,relay).
       Can be specified multiple times.

  -whitelist=<[permissions@]IP address or network>
       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). Uses same permissions as
       -whitebind. Can be specified multiple times.

Wallet options:

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

  -avoidpartialspends
       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
       (always enabled for wallets with "avoid_reuse" enabled))

  -changetype
       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)

  -disablewallet
       Do not load the wallet and disable wallet RPC calls

  -discardfee=<amt>
       The fee rate (in BTC/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

  -fallbackfee=<amt>
       A fee rate (in BTC/kB) that will be used when fee estimation has
       insufficient data. 0 to entirely disable the fallbackfee feature.
       (default: 0.00)

  -keypool=<n>
       Set key pool size to <n> (default: 1000). Warning: Smaller sizes may
       increase the risk of losing funds when restoring from an old
       backup, if none of the addresses in the original keypool have
       been used.

  -mintxfee=<amt>
       Fees (in BTC/kB) smaller than this are considered zero fee for
       transaction creation (default: 0.00001)

  -paytxfee=<amt>
       Fee (in BTC/kB) to add to transactions you send (default: 0.00)

  -rescan
       Rescan the block chain for missing wallet transactions on startup

  -salvagewallet
       Attempt to recover private keys from a corrupt wallet on startup

  -spendzeroconfchange
       Spend unconfirmed change when sending transactions (default: 1)

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

  -upgradewallet
       Upgrade wallet to latest format on startup

  -wallet=<path>
       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>.)

  -walletbroadcast
       Make the wallet broadcast transactions (default: 1)

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

  -walletnotify=<cmd>
       Execute command when a wallet transaction changes. %s in cmd is replaced
       by TxID and %w is replaced by wallet name. %w is not currently
       implemented on windows. On systems where %w is supported, it
       should NOT be quoted because this would break shell escaping used
       to invoke the command.

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

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

Debugging/Testing options:

  -debug=<category>
       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, walletdb, rpc, estimatefee, addrman,
       selectcoins, reindex, cmpctblock, rand, prune, proxy, mempoolrej,
       libevent, coindb, qt, leveldb, validation.

  -debugexclude=<category>
       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.

  -help-debug
       Print help message with debugging options and exit

  -logips
       Include IP addresses in debug output (default: 0)

  -logthreadnames
       Prepend debug output with name of the originating thread (only available
       on platforms supporting thread_local) (default: 0)

  -logtimestamps
       Prepend debug output with timestamp (default: 1)

  -maxtxfee=<amt>
       Maximum total fees (in BTC) to use in a single wallet transaction;
       setting this too low may abort large transactions (default: 0.10)

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

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

  -uacomment=<cmt>
       Append comment to the user agent string

Chain selection options:

  -chain=<chain>
       Use the chain <chain> (default: main). Allowed values: main, test,
       regtest

  -testnet
       Use the test chain. Equivalent to -chain=test.

Node relay options:

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

  -datacarrier
       Relay and mine data carrier transactions (default: 1)

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

  -minrelaytxfee=<amt>
       Fees (in BTC/kB) smaller than this are considered zero fee for relaying,
       mining and transaction creation (default: 0.00001)

  -whitelistforcerelay
       Add 'forcerelay' permission to whitelisted inbound peers with default
       permissions. This will relay transactions even if the
       transactions were already in the mempool. (default: 0)

  -whitelistrelay
       Add 'relay' permission to whitelisted inbound peers with default
       permissions. This will accept relayed transactions even when not
       relaying transactions (default: 1)

Block creation options:

  -blockmaxweight=<n>
       Set maximum BIP141 block weight (default: 3996000)

  -blockmintxfee=<amt>
       Set lowest fee rate (in BTC/kB) for transactions to be included in block
       creation. (default: 0.00001)

RPC server options:

  -rest
       Accept public REST requests (default: 0)

  -rpcallowip=<ip>
       Allow JSON-RPC connections from specified source. Valid for <ip> 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

  -rpcauth=<userpw>
       Username and HMAC-SHA-256 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

  -rpcbind=<addr>[:port]
       Bind to given address to listen for JSON-RPC connections. Do not expose
       the RPC server to untrusted networks such as the public internet!
       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:
       127.0.0.1 and ::1 i.e., localhost)

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

  -rpcpassword=<pw>
       Password for JSON-RPC connections

  -rpcport=<port>
       Listen for JSON-RPC connections on <port> (default: 8332, testnet:
       18332, regtest: 18443)

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

  -rpcthreads=<n>
       Set the number of threads to service RPC calls (default: 4)

  -rpcuser=<user>
       Username for JSON-RPC connections

  -rpcwhitelist=<whitelist>
       Set a whitelist to filter incoming RPC calls for a specific user. The
       field <whitelist> comes in the format: <USERNAME>:<rpc 1>,<rpc
       2>,...,<rpc n>. If multiple whitelists are set for a given user,
       they are set-intersected. See -rpcwhitelistdefault documentation
       for information on default whitelist behavior.

  -rpcwhitelistdefault
       Sets default behavior for rpc whitelisting. Unless rpcwhitelistdefault
       is set to 0, if any -rpcwhitelist is set, the rpc server acts as
       if all rpc users are subject to empty-unless-otherwise-specified
       whitelists. If rpcwhitelistdefault is set to 1 and no
       -rpcwhitelist is set, rpc server acts as if all rpc users are
       subject to empty whitelists.

  -server
       Accept command line and JSON-RPC commands

using bitcoind

bash-4.4$ bitcoin-cli help
== Blockchain ==
getbestblockhash
getblock "blockhash" ( verbosity )
getblockchaininfo
getblockcount
getblockfilter "blockhash" ( "filtertype" )
getblockhash height
getblockheader "blockhash" ( verbose )
getblockstats hash_or_height ( stats )
getchaintips
getchaintxstats ( nblocks "blockhash" )
getdifficulty
getmempoolancestors "txid" ( verbose )
getmempooldescendants "txid" ( verbose )
getmempoolentry "txid"
getmempoolinfo
getrawmempool ( verbose )
gettxout "txid" n ( include_mempool )
gettxoutproof ["txid",...] ( "blockhash" )
gettxoutsetinfo
preciousblock "blockhash"
pruneblockchain height
savemempool
scantxoutset "action" ( [scanobjects,...] )
verifychain ( checklevel nblocks )
verifytxoutproof "proof"

== Control ==
getmemoryinfo ( "mode" )
getrpcinfo
help ( "command" )
logging ( ["include_category",...] ["exclude_category",...] )
stop
uptime

== Generating ==
generatetoaddress nblocks "address" ( maxtries )
generatetodescriptor num_blocks "descriptor" ( maxtries )

== Mining ==
getblocktemplate ( "template_request" )
getmininginfo
getnetworkhashps ( nblocks height )
prioritisetransaction "txid" ( dummy ) fee_delta
submitblock "hexdata" ( "dummy" )
submitheader "hexdata"

== Network ==
addnode "node" "command"
clearbanned
disconnectnode ( "address" nodeid )
getaddednodeinfo ( "node" )
getconnectioncount
getnettotals
getnetworkinfo
getnodeaddresses ( count )
getpeerinfo
listbanned
ping
setban "subnet" "command" ( bantime absolute )
setnetworkactive state

== Rawtransactions ==
analyzepsbt "psbt"
combinepsbt ["psbt",...]
combinerawtransaction ["hexstring",...]
converttopsbt "hexstring" ( permitsigdata iswitness )
createpsbt [{"txid":"hex","vout":n,"sequence":n},...] [{"address":amount},{"data":"hex"},...] ( locktime replaceable )
createrawtransaction [{"txid":"hex","vout":n,"sequence":n},...] [{"address":amount},{"data":"hex"},...] ( locktime replaceable )
decodepsbt "psbt"
decoderawtransaction "hexstring" ( iswitness )
decodescript "hexstring"
finalizepsbt "psbt" ( extract )
fundrawtransaction "hexstring" ( options iswitness )
getrawtransaction "txid" ( verbose "blockhash" )
joinpsbts ["psbt",...]
sendrawtransaction "hexstring" ( maxfeerate )
signrawtransactionwithkey "hexstring" ["privatekey",...] ( [{"txid":"hex","vout":n,"scriptPubKey":"hex","redeemScript":"hex","witnessScript":"hex","amount":amount},...] "sighashtype" )
testmempoolaccept ["rawtx",...] ( maxfeerate )
utxoupdatepsbt "psbt" ( ["",{"desc":"str","range":n or [n,n]},...] )

== Util ==
createmultisig nrequired ["key",...] ( "address_type" )
deriveaddresses "descriptor" ( range )
estimatesmartfee conf_target ( "estimate_mode" )
getdescriptorinfo "descriptor"
signmessagewithprivkey "privkey" "message"
validateaddress "address"
verifymessage "address" "signature" "message"

== Wallet ==
abandontransaction "txid"
abortrescan
addmultisigaddress nrequired ["key",...] ( "label" "address_type" )
backupwallet "destination"
bumpfee "txid" ( options )
createwallet "wallet_name" ( disable_private_keys blank "passphrase" avoid_reuse )
dumpprivkey "address"
dumpwallet "filename"
encryptwallet "passphrase"
getaddressesbylabel "label"
getaddressinfo "address"
getbalance ( "dummy" minconf include_watchonly avoid_reuse )
getbalances
getnewaddress ( "label" "address_type" )
getrawchangeaddress ( "address_type" )
getreceivedbyaddress "address" ( minconf )
getreceivedbylabel "label" ( minconf )
gettransaction "txid" ( include_watchonly verbose )
getunconfirmedbalance
getwalletinfo
importaddress "address" ( "label" rescan p2sh )
importmulti "requests" ( "options" )
importprivkey "privkey" ( "label" rescan )
importprunedfunds "rawtransaction" "txoutproof"
importpubkey "pubkey" ( "label" rescan )
importwallet "filename"
keypoolrefill ( newsize )
listaddressgroupings
listlabels ( "purpose" )
listlockunspent
listreceivedbyaddress ( minconf include_empty include_watchonly "address_filter" )
listreceivedbylabel ( minconf include_empty include_watchonly )
listsinceblock ( "blockhash" target_confirmations include_watchonly include_removed )
listtransactions ( "label" count skip include_watchonly )
listunspent ( minconf maxconf ["address",...] include_unsafe query_options )
listwalletdir
listwallets
loadwallet "filename"
lockunspent unlock ( [{"txid":"hex","vout":n},...] )
removeprunedfunds "txid"
rescanblockchain ( start_height stop_height )
sendmany "" {"address":amount} ( minconf "comment" ["address",...] replaceable conf_target "estimate_mode" )
sendtoaddress "address" amount ( "comment" "comment_to" subtractfeefromamount replaceable conf_target "estimate_mode" avoid_reuse )
sethdseed ( newkeypool "seed" )
setlabel "address" "label"
settxfee amount
setwalletflag "flag" ( value )
signmessage "address" "message"
signrawtransactionwithwallet "hexstring" ( [{"txid":"hex","vout":n,"scriptPubKey":"hex","redeemScript":"hex","witnessScript":"hex","amount":amount},...] "sighashtype" )
unloadwallet ( "wallet_name" )
walletcreatefundedpsbt [{"txid":"hex","vout":n,"sequence":n},...] [{"address":amount},{"data":"hex"},...] ( locktime options bip32derivs )
walletlock
walletpassphrase "passphrase" timeout
walletpassphrasechange "oldpassphrase" "newpassphrase"
walletprocesspsbt "psbt" ( sign "sighashtype" bip32derivs )

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For more information on how to use the Docker image, visit the User Documentation.