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Network Parameters

Complete reference of Bitmark's network and consensus parameters.

Network Configuration​

Ports​

ParameterMainnetTestnetRegtest
P2P Port92651926518444
RPC Port92661926618332

Network Magic​

NetworkMagic BytesHex
Mainnetù¾´Ù0xf9beb4d9
Testnet·0x0b110907
RegtestúûñÝ0xfabfb5da

Address Prefixes​

TypeMainnetTestnet
P2PKH85 (b)130 (u)
P2SH5196
Secret Key213239
BIP32 Public0x0488B21E0x043587CF
BIP32 Private0x0488ADE40x04358394

Genesis Block​

Mainnet Genesis​

ParameterValue
Timestamp1405274442 (July 13, 2014 12:00:42 UTC)
Message"13/July/2014, with memory of the past, we look to the future. TDR"
Hash0xc1fb746e87e89ae75bdec2ef0639a1f6786744639ce3d0ece1dcf979b79137cb
Merkle Root0xd4715adf41222fae3d4bf41af30c675bc27228233d0f3cfd4ae0ae1d3e760ba8
nBits0x1d00ffff
nNonce14385103
Subsidy20 MARKS

Genesis Block (Hex)​

01000000
0000000000000000000000000000000000000000000000000000000000000000
d4715adf41222fae3d4bf41af30c675bc27228233d0f3cfd4ae0ae1d3e760ba8
ea594c53
ffff001d
af0fb300

Consensus Parameters​

Block Timing​

ParameterValueDescription
Target Block Time120 sec2 minutes
Per-Algo Target960 sec16 minutes
DGW Window25 blocksPer algorithm
Max Time Future7200 sec2 hours

Proof of Work​

ParameterValue
PoW Limit (mainnet)2^224 - 1
PoW Limit (testnet)2^248 - 1
Algorithm Count8

Block Size​

ParameterValue
Max Block Size1,000,000 bytes
Max Block Weight4,000,000
Max Sigops80,000

Transaction​

ParameterValue
Max Tx Size100,000 bytes
Min Relay Fee1,000 satoshis/kB
Dust Threshold546 satoshis

Fork Parameters​

mPoW Fork (Block 450,947)​

ParameterValue
Activation Block450,947
Activation Method75% supermajority
Minimum Version4

Block Version Flags​

FlagBitValue
AUXPOW80x100
ALGO (mask)9-110xE00
UPDATE_SSF120x1000
VARIANT130x2000
VARIANT2140x4000
CHAIN_ID16+0x10000+

Chain ID​

ParameterValue
Bitmark Chain ID91 (0x5B)
Strict Chain IDtrue

Algorithm Weights​

IDAlgorithmWeight
0SCRYPT8,000
1SHA256D1
2YESCRYPT800,000
3ARGON2D4,000,000
4X178,000
5LYRA2REv28,000
6EQUIHASH8,000,000
7CRYPTONIGHT8,000,000

Monetary Parameters​

Supply​

ParameterValue
Maximum Supply27,579,894.73108 MARKS
Satoshis2,757,989,473,108,000
Decimals8

Emission​

ParameterValue
Initial Reward20 MARKS
Per-Algo Reward2.5 MARKS
First Halving788,000 blocks
First Quartering394,000 blocks

Difficulty Parameters​

DGWv3​

ParameterValue
Timespan960 seconds
Window25 blocks
Min Adjustment1/3
Max Adjustment3x

Surge Protector​

ParameterValue
Trigger9 consecutive blocks
ActionDivide by 3

Resurrector​

ParameterValue
Trigger9,600 seconds (160 min)
ActionProportional reduction

Script Parameters​

Standard Scripts​

TypeSupported
P2PKHYes
P2SHYes
P2WPKHNo (legacy)
P2WSHNo (legacy)
OP_RETURNYes

OP_RETURN​

ParameterValue
Max Size80 bytes
MRK Size37 bytes

Network Seeds​

DNS Seeds (Mainnet)​

seed.bitmark.co
dnsseed.bitmark.io

Hardcoded Nodes​

See chainparams.cpp for current list of bootstrap nodes.

Protocol Messages​

Message Header​

FieldSizeDescription
Magic4 bytesNetwork identifier
Command12 bytesMessage type
Length4 bytesPayload size
Checksum4 bytesFirst 4 bytes of SHA256d(payload)

Message Types​

CommandDescription
versionVersion exchange
verackVersion acknowledged
addrAddress announcement
invInventory
getdataRequest data
blockBlock data
txTransaction data
getblocksRequest block locator
getheadersRequest headers
headersBlock headers
pingKeep-alive
pongKeep-alive response

Equihash Parameters​

ParameterValue
N200
K9
Solution Size~1344 bytes
Nonce Size32 bytes

Configuration File​

Default locations:

  • Linux: ~/.bitmark/bitmark.conf
  • macOS: ~/Library/Application Support/Bitmark/bitmark.conf
  • Windows: %APPDATA%\Bitmark\bitmark.conf

Required Settings​

rpcuser=<username>
rpcpassword=<password>

Common Settings​

# Network
listen=1
server=1
daemon=1
port=9265

# RPC
rpcport=9266
rpcallowip=127.0.0.1

# Testnet
testnet=0

# Mining
gen=0

# Index
txindex=1

Data Directory Structure​

~/.bitmark/
├── bitmark.conf
├── blocks/
│   ├── blk00000.dat
│   ├── blk00001.dat
│   └── rev00000.dat
├── chainstate/
├── database/
├── debug.log
├── peers.dat
├── wallet.dat
└── .lock

See Also​