Bitcoin Core v0.21.2
- Version: v0.21.2
- Tag: v0.21.2
- Release Date: 2021-10-06
- Docker Pull Command:
docker pull ghcr.io/mocacinno/mocacinno/bitcoin_core_docker:v21.2docker pull mocacinno/btc_core:v21.2
- 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
- this is the “newest” version with the “old” was of versioning, these versions all have an extra “0” in their versioning system, making stuff a bit confusing around this version
flags and parameters
starting the daemon
bash-4.4$ bitcoind -?
Bitcoin Core version v0.21.2.0-gaf591f2068d0363c92d9756ca39c43db85e5804c
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:
0000000000000000000b9d2ec5a352ecba0592946514a92f14319dc2b367fc72,
testnet:
000000000000006433d1efec504c53ca332b64963c425395515b01977bd7b3b0,
signet:
0000002a1de0f46379358c1fd09906f7ac59adf3712323ed90eb59e4c183c020)
-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 the peer has the 'forcerelay' permission. RPC
transactions are not affected. (default: 0)
-conf=<file>
Specify path to read-only 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.
-settings=<file>
Specify path to dynamic settings data file. Can be disabled with
-nosettings. File is written at runtime and not meant to be
edited by users (use bitcoin.conf instead for custom settings).
Relative paths will be prefixed by datadir location. (default:
settings.json)
-startupnotify=<cmd>
Execute command on startup.
-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.
-bantime=<n>
Default duration (in seconds) of manually configured bans (default:
86400)
-bind=<addr>[:<port>][=onion]
Bind to given address and always listen on it (default: 0.0.0.0). Use
[host]:port notation for IPv6. Append =onion to tag any incoming
connections to that address and port as incoming Tor connections
(default: 127.0.0.1:8334=onion, testnet: 127.0.0.1:18334=onion,
signet: 127.0.0.1:38334=onion, regtest: 127.0.0.1:18445=onion)
-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 onion 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).
Limit does not apply to peers with 'download' permission. 0 = no
limit (default: 0)
-networkactive
Enable all P2P network activity (default: 1). Can be changed by the
setnetworkactive RPC command
-onion=<ip:port>
Use separate SOCKS5 proxy to reach peers via Tor onion 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.
-peerblockfilters
Serve compact block filters to peers per BIP 157 (default: 0)
-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>. Nodes not using the default ports
(default: 8333, testnet: 18333, signet: 38333, regtest: 18444)
are unlikely to get incoming connections.
-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 the given address and add permission flags to the peers
connecting to it. Use [host]:port notation for IPv6. Allowed
permissions: bloomfilter (allow requesting BIP37 filtered blocks
and transactions), noban (do not ban for misbehavior; implies
download), forcerelay (relay transactions that are already in the
mempool; implies relay), relay (relay even in -blocksonly mode,
and unlimited transaction announcements), mempool (allow
requesting BIP35 mempool contents), download (allow getheaders
during IBD, no disconnect after maxuploadtarget limit), addr
(responses to GETADDR avoid hitting the cache and contain random
records with the most up-to-date info). Specify multiple
permissions separated by commas (default:
download,noban,mempool,relay). Can be specified multiple times.
-whitelist=<[permissions@]IP address or network>
Add permission flags to the 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
the 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.
-maxapsfee=<n>
Spend up to this amount in additional (absolute) fees (in BTC) if it
allows the use of partial spend avoidance (default: 0.00)
-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
-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)
-wallet=<path>
Specify wallet path to load at startup. Can be used multiple times to
load multiple wallets. Path is to a directory containing wallet
data and log files. If the path is not absolute, it is
interpreted relative to <walletdir>. This only loads existing
wallets and does not create new ones. For backwards compatibility
this also accepts names of existing top-level 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)
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,
signet, regtest
-signet
Use the signet chain. Equivalent to -chain=signet. Note that the network
is defined by the -signetchallenge parameter
-signetchallenge
Blocks must satisfy the given script to be considered valid (only for
signet networks; defaults to the global default signet test
network challenge)
-signetseednode
Specify a seed node for the signet network, in the hostname[:port]
format, e.g. sig.net:1234 (may be used multiple times to specify
multiple seed nodes; defaults to the global default signet test
network seed node(s))
-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>$<HASH>. A
canonical python script is included in share/rpcauth. The client
then connects normally using the
rpcuser=<USERNAME>/rpcpassword=<PASSWORD> pair of arguments. This
option can be specified multiple times
-rpcbind=<addr>[:port]
Bind to given address to listen for JSON-RPC connections. Do not expose
the RPC server to untrusted networks such as the public internet!
This option is ignored unless -rpcallowip is also passed. Port is
optional and overrides -rpcport. Use [host]:port notation for
IPv6. This option can be specified multiple times (default:
127.0.0.1 and ::1 i.e., localhost)
-rpccookiefile=<loc>
Location of the auth cookie. Relative paths will be prefixed by a
net-specific datadir location. (default: data dir)
-rpcpassword=<pw>
Password for JSON-RPC connections
-rpcport=<port>
Listen for JSON-RPC connections on <port> (default: 8332, testnet:
18332, signet: 38332, regtest: 18443)
-rpcserialversion
Sets the serialization of raw transaction or block hex returned in
non-verbose mode, non-segwit(0) or segwit(1) (default: 1)
-rpcthreads=<n>
Set the number of threads to service RPC calls (default: 4)
-rpcuser=<user>
Username for JSON-RPC connections
-rpcwhitelist=<whitelist>
Set a whitelist to filter incoming RPC calls for a specific user. The
field <whitelist> comes in the format: <USERNAME>:<rpc 1>,<rpc
2>,...,<rpc n>. If multiple whitelists are set for a given user,
they are set-intersected. See -rpcwhitelistdefault documentation
for information on default whitelist behavior.
-rpcwhitelistdefault
Sets default behavior for rpc whitelisting. Unless rpcwhitelistdefault
is set to 0, if any -rpcwhitelist is set, the rpc server acts as
if all rpc users are subject to empty-unless-otherwise-specified
whitelists. If rpcwhitelistdefault is set to 1 and no
-rpcwhitelist is set, rpc server acts as if all rpc users are
subject to empty whitelists.
-server
Accept command line and JSON-RPC commands
using bitcoind
bash-4.4$ 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 mempool_sequence )
gettxout "txid" n ( include_mempool )
gettxoutproof ["txid",...] ( "blockhash" )
gettxoutsetinfo ( "hash_type" )
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 ==
generateblock "output" ["rawtx/txid",...]
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"
getindexinfo ( "index_name" )
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 descriptors load_on_startup )
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 )
importdescriptors "requests"
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" ( load_on_startup )
lockunspent unlock ( [{"txid":"hex","vout":n},...] )
psbtbumpfee "txid" ( options )
removeprunedfunds "txid"
rescanblockchain ( start_height stop_height )
send [{"address":amount},{"data":"hex"},...] ( conf_target "estimate_mode" fee_rate options )
sendmany "" {"address":amount} ( minconf "comment" ["address",...] replaceable conf_target "estimate_mode" fee_rate verbose )
sendtoaddress "address" amount ( "comment" "comment_to" subtractfeefromamount replaceable conf_target "estimate_mode" avoid_reuse fee_rate verbose )
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" load_on_startup )
upgradewallet ( version )
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 )
navigation
For more information on how to use the Docker image, visit the User Documentation.