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chaincfg: split params into per-network files. #1265

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Jun 6, 2018
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chaincfg: split params into per-network files. #1265

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220 changes: 220 additions & 0 deletions chaincfg/mainnetparams.go
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// Copyright (c) 2014-2016 The btcsuite developers
// Copyright (c) 2015-2017 The Decred developers
// Use of this source code is governed by an ISC
// license that can be found in the LICENSE file.

package chaincfg

import (
"time"

"github.com/decred/dcrd/wire"
)

// MainNetParams defines the network parameters for the main Decred network.
var MainNetParams = Params{
Name: "mainnet",
Net: wire.MainNet,
DefaultPort: "9108",
DNSSeeds: []DNSSeed{
{"mainnet-seed.decred.mindcry.org", true},
{"mainnet-seed.decred.netpurgatory.com", true},
{"mainnet-seed.decred.org", true},
},

// Chain parameters
GenesisBlock: &genesisBlock,
GenesisHash: &genesisHash,
PowLimit: mainPowLimit,
PowLimitBits: 0x1d00ffff,
ReduceMinDifficulty: false,
MinDiffReductionTime: 0, // Does not apply since ReduceMinDifficulty false
GenerateSupported: false,
MaximumBlockSizes: []int{393216},
MaxTxSize: 393216,
TargetTimePerBlock: time.Minute * 5,
WorkDiffAlpha: 1,
WorkDiffWindowSize: 144,
WorkDiffWindows: 20,
TargetTimespan: time.Minute * 5 * 144, // TimePerBlock * WindowSize
RetargetAdjustmentFactor: 4,

// Subsidy parameters.
BaseSubsidy: 3119582664, // 21m
MulSubsidy: 100,
DivSubsidy: 101,
SubsidyReductionInterval: 6144,
WorkRewardProportion: 6,
StakeRewardProportion: 3,
BlockTaxProportion: 1,

// Checkpoints ordered from oldest to newest.
Checkpoints: []Checkpoint{
{440, newHashFromStr("0000000000002203eb2c95ee96906730bb56b2985e174518f90eb4db29232d93")},
{24480, newHashFromStr("0000000000000c9d4239c4ef7ef3fb5aaeed940244bc69c57c8c5e1f071b28a6")},
{48590, newHashFromStr("0000000000000d5e0de21a96d3c965f5f2db2c82612acd7389c140c9afe92ba7")},
{54770, newHashFromStr("00000000000009293d067b1126b7de07fc9b2b94ee50dfe0d48c239a7adb072c")},
{60720, newHashFromStr("0000000000000a64475d68ffb9ad89a3d147c0f5138db26b40da9d19d0004117")},
{65270, newHashFromStr("0000000000000021f107601962789b201f0a0cbb98ac5f8c12b93d94e795b441")},
{75380, newHashFromStr("0000000000000e7d13cfc85806aa720fe3670980f5b7d33253e4f41985558372")},
{85410, newHashFromStr("00000000000013ec928074bea6eac9754aa614c7acb20edf300f18b0cd122692")},
{99880, newHashFromStr("0000000000000cb2a9a9ded647b9f78aae51ace32dd8913701d420ead272913c")},
{123080, newHashFromStr("000000000000009ea6e02d0f0424f445ed50686f9ae4aecdf3b268e981114477")},
{135960, newHashFromStr("00000000000001d2f9bbca9177972c0ba45acb40836b72945a75d73b99079498")},
{139740, newHashFromStr("00000000000001397179ae1aff156fb1aea228938d06b83e43b78b1c44527b5b")},
{155900, newHashFromStr("000000000000008557e37fb05177fc5a54e693de20689753639135f85a2dcb2e")},
{164300, newHashFromStr("000000000000009ed067ff51cd5e15f3c786222a5183b20a991a80ce535907a9")},
{181020, newHashFromStr("00000000000000b77d832cb2cbed02908d69323862a53e56345400ad81a6fb8f")},
{189950, newHashFromStr("000000000000007341d8ae2ea7e41f25cee00e1a70a4a3dc1cb055d14ecb2e11")},
{214672, newHashFromStr("0000000000000021d5cbeead55cb7fd659f07e8127358929ffc34cd362209758")},
},

// The miner confirmation window is defined as:
// target proof of work timespan / target proof of work spacing
RuleChangeActivationQuorum: 4032, // 10 % of RuleChangeActivationInterval * TicketsPerBlock
RuleChangeActivationMultiplier: 3, // 75%
RuleChangeActivationDivisor: 4,
RuleChangeActivationInterval: 2016 * 4, // 4 weeks
Deployments: map[uint32][]ConsensusDeployment{
4: {{
Vote: Vote{
Id: VoteIDSDiffAlgorithm,
Description: "Change stake difficulty algorithm as defined in DCP0001",
Mask: 0x0006, // Bits 1 and 2
Choices: []Choice{{
Id: "abstain",
Description: "abstain voting for change",
Bits: 0x0000,
IsAbstain: true,
IsNo: false,
}, {
Id: "no",
Description: "keep the existing algorithm",
Bits: 0x0002, // Bit 1
IsAbstain: false,
IsNo: true,
}, {
Id: "yes",
Description: "change to the new algorithm",
Bits: 0x0004, // Bit 2
IsAbstain: false,
IsNo: false,
}},
},
StartTime: 1493164800, // Apr 26th, 2017
ExpireTime: 1524700800, // Apr 26th, 2018
}, {
Vote: Vote{
Id: VoteIDLNSupport,
Description: "Request developers begin work on Lightning Network (LN) integration",
Mask: 0x0018, // Bits 3 and 4
Choices: []Choice{{
Id: "abstain",
Description: "abstain from voting",
Bits: 0x0000,
IsAbstain: true,
IsNo: false,
}, {
Id: "no",
Description: "no, do not work on integrating LN support",
Bits: 0x0008, // Bit 3
IsAbstain: false,
IsNo: true,
}, {
Id: "yes",
Description: "yes, begin work on integrating LN support",
Bits: 0x0010, // Bit 4
IsAbstain: false,
IsNo: false,
}},
},
StartTime: 1493164800, // Apr 26th, 2017
ExpireTime: 1508976000, // Oct 26th, 2017
}},
5: {{
Vote: Vote{
Id: VoteIDLNFeatures,
Description: "Enable features defined in DCP0002 and DCP0003 necessary to support Lightning Network (LN)",
Mask: 0x0006, // Bits 1 and 2
Choices: []Choice{{
Id: "abstain",
Description: "abstain voting for change",
Bits: 0x0000,
IsAbstain: true,
IsNo: false,
}, {
Id: "no",
Description: "keep the existing consensus rules",
Bits: 0x0002, // Bit 1
IsAbstain: false,
IsNo: true,
}, {
Id: "yes",
Description: "change to the new consensus rules",
Bits: 0x0004, // Bit 2
IsAbstain: false,
IsNo: false,
}},
},
StartTime: 1505260800, // Sep 13th, 2017
ExpireTime: 1536796800, // Sep 13th, 2018
}},
},

// Enforce current block version once majority of the network has
// upgraded.
// 75% (750 / 1000)
// Reject previous block versions once a majority of the network has
// upgraded.
// 95% (950 / 1000)
BlockEnforceNumRequired: 750,
BlockRejectNumRequired: 950,
BlockUpgradeNumToCheck: 1000,

// AcceptNonStdTxs is a mempool param to either accept and relay
// non standard txs to the network or reject them
AcceptNonStdTxs: false,

// Address encoding magics
NetworkAddressPrefix: "D",
PubKeyAddrID: [2]byte{0x13, 0x86}, // starts with Dk
PubKeyHashAddrID: [2]byte{0x07, 0x3f}, // starts with Ds
PKHEdwardsAddrID: [2]byte{0x07, 0x1f}, // starts with De
PKHSchnorrAddrID: [2]byte{0x07, 0x01}, // starts with DS
ScriptHashAddrID: [2]byte{0x07, 0x1a}, // starts with Dc
PrivateKeyID: [2]byte{0x22, 0xde}, // starts with Pm

// BIP32 hierarchical deterministic extended key magics
HDPrivateKeyID: [4]byte{0x02, 0xfd, 0xa4, 0xe8}, // starts with dprv
HDPublicKeyID: [4]byte{0x02, 0xfd, 0xa9, 0x26}, // starts with dpub

// BIP44 coin type used in the hierarchical deterministic path for
// address generation.
HDCoinType: 20,

// Decred PoS parameters
MinimumStakeDiff: 2 * 1e8, // 2 Coin
TicketPoolSize: 8192,
TicketsPerBlock: 5,
TicketMaturity: 256,
TicketExpiry: 40960, // 5*TicketPoolSize
CoinbaseMaturity: 256,
SStxChangeMaturity: 1,
TicketPoolSizeWeight: 4,
StakeDiffAlpha: 1, // Minimal
StakeDiffWindowSize: 144,
StakeDiffWindows: 20,
StakeVersionInterval: 144 * 2 * 7, // ~1 week
MaxFreshStakePerBlock: 20, // 4*TicketsPerBlock
StakeEnabledHeight: 256 + 256, // CoinbaseMaturity + TicketMaturity
StakeValidationHeight: 4096, // ~14 days
StakeBaseSigScript: []byte{0x00, 0x00},
StakeMajorityMultiplier: 3,
StakeMajorityDivisor: 4,

// Decred organization related parameters
// Organization address is Dcur2mcGjmENx4DhNqDctW5wJCVyT3Qeqkx
OrganizationPkScript: hexDecode("a914f5916158e3e2c4551c1796708db8367207ed13bb87"),
OrganizationPkScriptVersion: 0,
BlockOneLedger: BlockOneLedgerMainNet,
}
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