Applicable to Nyancoin Core version v2.0
Note that some options listed here may relate to features not enabled or planned for a future version.
These can be used on the command line when starting the application, or added to the nyancoin.conf file where that usage makes sense.
nyancoin-qt -maxconnections=25 -txindex
Print this help message and exit
Print version and exit
Receive and display P2P network alerts (default: 1)
Execute command when a relevant alert is received or we see a really long fork (%s in cmd is replaced by message)
Execute command when the best block changes (%s in cmd is replaced by block hash, %i is replaced by block number)
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: b477d9bc0721a1b96547495404583d68123f471fdd1d4058a9adff2fa7452298, testnet: 6943eaeaba98dc7d09f7e73398daccb4abcabb18b66c8c875e52b07638d93951).
Specify configuration file (default: nyancoin.conf)
Specify data directory
Set database cache size in megabytes (4 to 16384, default: 450)
Imports blocks from external blk000??.dat file on startup
Set the Maximum reorg depth (default: 55)
Set the Minimum amount of peers required to not allow reorgs. Peers must be greater than. (default: 3)
Keep at most <n> unconnectable transactions in memory (default: 100)
Keep the transaction memory pool below <n> megabytes (default: 300)
Do not keep transactions in the mempool longer than <n> hours (default: 24)
Extra transactions to keep in memory for compact block reconstructions (default: 100).
Set the number of script verification threads (-16 to 16, 0 = auto, <0 = leave that many cores free, default: 0)
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, >2200 = automatically prune block files to stay under the specified target size in MiB)
Rebuild chain state from the currently indexed blocks
Rebuild chain state and block index from the blk*.dat files on disk
Maintain a full transaction index, used by the getrawtransaction rpc call (default: 0)
Add a node to connect to and attempt to keep the connection open
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(s); -noconnect or -connect=0 alone to disable automatic connections
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/-noconnect)
Specify your own public address
Always query for peer addresses via DNS lookup (default: 0)
Accept connections from outside (default: 1 if no -proxy or -connect/-noconnect)
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)
Use separate SOCKS5 proxy to reach peers via Tor hidden services (default: -proxy)
Only connect to nodes in network <net> (ipv4, ipv6 or onion)
Relay non-P2SH multisig (default: 1)
Support filtering of blocks and transaction with bloom filters (default: 1)
Listen for connections on <port> (default: 33701 or testnet: 19526)
Connect through SOCKS5 proxy
Randomise credentials for every proxy connection. This enables Tor stream isolation (default: 1)
Sets the serialisation of raw transaction or block hex returned in non-verbose mode, non-segwit(0) or segwit(1) (default: 1).
Connect to a node to retrieve peer addresses, and disconnect
Specify connection timeout in milliseconds (minimum: 1, default: 5000)
Tor control port to use if onion listening enabled (default: 127.0.0.1:9051)
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 peers connecting from the given IP address (e.g. 188.8.131.52) or CIDR notated network (e.g. 184.108.40.206/24).
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
Accept relayed transactions received from whitelisted peers even when not relaying transactions (default: 1)
Force relay of transactions from whitelisted peers, even if they violate local relay policy (default: 1).
Tries to keep outbound traffic under the given target (in MiB per 24h), 0 = no limit (default: 0)
Do not load the wallet and disable wallet RPC calls
Set key pool size to <n> (default: 100)
A fee rate (in NYAN/kB) that will be used when fee estimation has insufficient data (default: 0.00000001)
Fees (in NYAN/kB) smaller than this are considered zero fee for transaction creation (default: 0.00000001)
Fee (in NYAN/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)
Use hierarchical deterministic key generation (HD) after BIP32. Only has effect during wallet creation/first start (default: 1)
Send transactions with full-RBF opt-in enabled (default: 0)
Upgrade wallet to latest format on startup
Specify wallet file (within data directory) (default: wallet.dat)
Make the wallet broadcast transactions (default: 1)
Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)
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)
Enable publish hash block in <address>
Enable publish hash transaction in <address>
Enable publish raw block in <address>
Enable publish raw transaction in <address>
Append comment to the user agent string
Output debugging information (default: 0, supplying <category> is optional).
If <category> is not supplied or if <category> = 1, output all debugging information.
<category> can be: addrman, alert, bench, cmpctblock, coindb, db, http, libevent, lock, mempool, mempoolrej, net, proxy, prune, rand, reindex, rpc, selectcoins, tor, zmq, qt.
Show all debugging options (usage: --help -help-debug)
Include IP addresses in debug output (default: 0)
Prepend debug output with timestamp (default: 1)
Fees (in NYAN/kB) smaller than this are considered zero fee for relaying, mining and transaction creation (default: 0.00000001)
Maximum total fees (in NYAN) to use in a single wallet transaction or raw transaction; setting this too low may abort large transactions (default: 0.10)
Send trace/debug info to console instead of debug.log file
Shrink debug.log file on client startup (default: 1 when no -debug)
Use the test chain
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)
Set maximum BIP141 block weight (default: 3000000)
Set maximum block size in bytes (default: 1000000)
Set maximum size of high-priority/low-fee transactions in bytes (default: 27000)
Set lowest fee rate (in NYAN/kB) for transactions to be included in block creation (default: 0.00000001).
Accept command line and JSON-RPC commands
Accept public REST requests (default: 0)
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)
Location of the auth cookie (default: data dir)
Username for JSON-RPC connections
Password for JSON-RPC connections
Username and hashed password for JSON-RPC connections.
The field <userpw> comes in the format: <USERNAME>:<SALT>#60;HASH>.
A canonical python script is included in share/rpcuser.
The client then connects normally using the rpcuser=<USERNAME>/rpcpassword=<PASSWORD> pair of arguments.
This option can be specified multiple times.
Listen for JSON-RPC connections on <port> (default: 33700 or testnet: 44555)
Allow JSON-RPC connections from specified source.
Valid for <ip> are a single IP (e.g. 220.127.116.11), a network/netmask (e.g. 18.104.22.168/255.255.255.0) or a network/CIDR (e.g. 22.214.171.124/24).
This option can be specified multiple times
Set the number of threads to service RPC calls (default: 4)
Choose data directory on startup (default: 0)
Set language, for example "de_DE" (default: system locale)
Set SSL root certificates for payment request (default: -system-)
Show splash screen on startup (default: 1)
Reset all settings changed in the GUI