6daa1a709a
This updates the minimum known chain work values for the main and test networks as follows: mainnet: 0x0000000000000000000000000000000000000000001d987ec2c7f4bc1199489e testnet: 0x000000000000000000000000000000000000000000000000e419ae4d750d4484
482 lines
16 KiB
Go
482 lines
16 KiB
Go
// Copyright (c) 2014-2016 The btcsuite developers
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// Copyright (c) 2015-2021 The Decred developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package chaincfg
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import (
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"math/big"
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"time"
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"github.com/decred/dcrd/chaincfg/chainhash"
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"github.com/decred/dcrd/wire"
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)
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// MainNetParams returns the network parameters for the main Decred network.
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func MainNetParams() *Params {
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// mainPowLimit is the highest proof of work value a Decred block can have
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// for the main network. It is the value 2^224 - 1.
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mainPowLimit := new(big.Int).Sub(new(big.Int).Lsh(bigOne, 224), bigOne)
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// genesisBlock defines the genesis block of the block chain which serves as
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// the public transaction ledger for the main network.
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//
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// The genesis block for Decred mainnet, testnet, and simnet are not
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// evaluated for proof of work. The only values that are ever used elsewhere
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// in the blockchain from it are:
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// (1) The genesis block hash is used as the PrevBlock.
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// (2) The difficulty starts off at the value given by Bits.
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// (3) The stake difficulty starts off at the value given by SBits.
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// (4) The timestamp, which guides when blocks can be built on top of it
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// and what the initial difficulty calculations come out to be.
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//
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// The genesis block is valid by definition and none of the fields within it
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// are validated for correctness.
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genesisBlock := wire.MsgBlock{
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Header: wire.BlockHeader{
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Version: 1,
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PrevBlock: chainhash.Hash{}, // All zero.
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// MerkleRoot: Calculated below.
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StakeRoot: chainhash.Hash{},
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Timestamp: time.Unix(1454954400, 0), // Mon, 08 Feb 2016 18:00:00 GMT
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Bits: 0x1b01ffff, // Difficulty 32767
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SBits: 2 * 1e8, // 2 Coin
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Nonce: 0x00000000,
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StakeVersion: 0,
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},
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Transactions: []*wire.MsgTx{{
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SerType: wire.TxSerializeFull,
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Version: 1,
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TxIn: []*wire.TxIn{{
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// Fully null.
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PreviousOutPoint: wire.OutPoint{
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Hash: chainhash.Hash{},
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Index: 0xffffffff,
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Tree: 0,
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},
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SignatureScript: hexDecode("0000"),
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Sequence: 0xffffffff,
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BlockHeight: wire.NullBlockHeight,
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BlockIndex: wire.NullBlockIndex,
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ValueIn: wire.NullValueIn,
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}},
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TxOut: []*wire.TxOut{{
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Version: 0x0000,
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Value: 0x00000000,
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PkScript: hexDecode("801679e98561ada96caec2949a5d41c4cab3851e" +
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"b740d951c10ecbcf265c1fd9"),
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}},
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LockTime: 0,
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Expiry: 0,
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}},
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}
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genesisBlock.Header.MerkleRoot = genesisBlock.Transactions[0].TxHashFull()
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return &Params{
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Name: "mainnet",
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Net: wire.MainNet,
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DefaultPort: "9108",
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DNSSeeds: []DNSSeed{
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{"mainnet-seed.decred.mindcry.org", true},
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{"mainnet-seed.decred.netpurgatory.com", true},
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{"mainnet-seed.decred.org", true},
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},
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// Chain parameters
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GenesisBlock: &genesisBlock,
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GenesisHash: genesisBlock.BlockHash(),
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PowLimit: mainPowLimit,
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PowLimitBits: 0x1d00ffff,
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ReduceMinDifficulty: false,
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MinDiffReductionTime: 0, // Does not apply since ReduceMinDifficulty false
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GenerateSupported: false,
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MaximumBlockSizes: []int{393216},
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MaxTxSize: 393216,
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TargetTimePerBlock: time.Minute * 5,
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WorkDiffAlpha: 1,
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WorkDiffWindowSize: 144,
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WorkDiffWindows: 20,
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TargetTimespan: time.Minute * 5 * 144, // TimePerBlock * WindowSize
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RetargetAdjustmentFactor: 4,
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// Subsidy parameters.
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BaseSubsidy: 3119582664, // 21m
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MulSubsidy: 100,
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DivSubsidy: 101,
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SubsidyReductionInterval: 6144,
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WorkRewardProportion: 6,
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StakeRewardProportion: 3,
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BlockTaxProportion: 1,
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// Checkpoints ordered from oldest to newest. Note that only the latest
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// checkpoint is provided since with headers first syncing the most recent
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// checkpoint will be discovered before block syncing even starts.
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Checkpoints: []Checkpoint{
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{601900, newHashFromStr("00000000000000001c1865a45a038bb680fc076d70cd88c1843e3e669cb54942")},
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},
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// MinKnownChainWork is the minimum amount of known total work for the
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// chain at a given point in time. This is intended to be updated
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// periodically with new releases.
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//
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// Block 00000000000000001251efb83ad1a5c71351b50fe9195f009cf0bf5a7cd99d52
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// Height: 606000
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MinKnownChainWork: hexToBigInt("0000000000000000000000000000000000000000001d987ec2c7f4bc1199489e"),
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// The miner confirmation window is defined as:
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// target proof of work timespan / target proof of work spacing
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RuleChangeActivationQuorum: 4032, // 10 % of RuleChangeActivationInterval * TicketsPerBlock
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RuleChangeActivationMultiplier: 3, // 75%
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RuleChangeActivationDivisor: 4,
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RuleChangeActivationInterval: 2016 * 4, // 4 weeks
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Deployments: map[uint32][]ConsensusDeployment{
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4: {{
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Vote: Vote{
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Id: VoteIDSDiffAlgorithm,
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Description: "Change stake difficulty algorithm as defined in DCP0001",
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Mask: 0x0006, // Bits 1 and 2
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Choices: []Choice{{
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Id: "abstain",
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Description: "abstain voting for change",
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Bits: 0x0000,
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IsAbstain: true,
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IsNo: false,
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}, {
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Id: "no",
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Description: "keep the existing algorithm",
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Bits: 0x0002, // Bit 1
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IsAbstain: false,
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IsNo: true,
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}, {
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Id: "yes",
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Description: "change to the new algorithm",
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Bits: 0x0004, // Bit 2
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IsAbstain: false,
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IsNo: false,
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}},
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},
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StartTime: 1493164800, // Apr 26th, 2017
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ExpireTime: 1524700800, // Apr 26th, 2018
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}, {
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Vote: Vote{
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Id: VoteIDLNSupport,
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Description: "Request developers begin work on Lightning Network (LN) integration",
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Mask: 0x0018, // Bits 3 and 4
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Choices: []Choice{{
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Id: "abstain",
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Description: "abstain from voting",
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Bits: 0x0000,
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IsAbstain: true,
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IsNo: false,
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}, {
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Id: "no",
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Description: "no, do not work on integrating LN support",
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Bits: 0x0008, // Bit 3
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IsAbstain: false,
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IsNo: true,
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}, {
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Id: "yes",
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Description: "yes, begin work on integrating LN support",
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Bits: 0x0010, // Bit 4
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IsAbstain: false,
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IsNo: false,
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}},
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},
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StartTime: 1493164800, // Apr 26th, 2017
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ExpireTime: 1508976000, // Oct 26th, 2017
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}},
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5: {{
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Vote: Vote{
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Id: VoteIDLNFeatures,
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Description: "Enable features defined in DCP0002 and DCP0003 necessary to support Lightning Network (LN)",
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Mask: 0x0006, // Bits 1 and 2
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Choices: []Choice{{
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Id: "abstain",
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Description: "abstain voting for change",
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Bits: 0x0000,
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IsAbstain: true,
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IsNo: false,
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}, {
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Id: "no",
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Description: "keep the existing consensus rules",
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Bits: 0x0002, // Bit 1
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IsAbstain: false,
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IsNo: true,
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}, {
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Id: "yes",
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Description: "change to the new consensus rules",
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Bits: 0x0004, // Bit 2
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IsAbstain: false,
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IsNo: false,
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}},
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},
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StartTime: 1505260800, // Sep 13th, 2017
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ExpireTime: 1536796800, // Sep 13th, 2018
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}},
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6: {{
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Vote: Vote{
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Id: VoteIDFixLNSeqLocks,
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Description: "Modify sequence lock handling as defined in DCP0004",
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Mask: 0x0006, // Bits 1 and 2
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Choices: []Choice{{
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Id: "abstain",
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Description: "abstain voting for change",
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Bits: 0x0000,
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IsAbstain: true,
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IsNo: false,
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}, {
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Id: "no",
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Description: "keep the existing consensus rules",
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Bits: 0x0002, // Bit 1
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IsAbstain: false,
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IsNo: true,
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}, {
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Id: "yes",
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Description: "change to the new consensus rules",
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Bits: 0x0004, // Bit 2
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IsAbstain: false,
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IsNo: false,
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}},
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},
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StartTime: 1548633600, // Jan 28th, 2019
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ExpireTime: 1580169600, // Jan 28th, 2020
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}},
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7: {{
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Vote: Vote{
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Id: VoteIDHeaderCommitments,
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Description: "Enable header commitments as defined in DCP0005",
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Mask: 0x0006, // Bits 1 and 2
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Choices: []Choice{{
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Id: "abstain",
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Description: "abstain voting for change",
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Bits: 0x0000,
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IsAbstain: true,
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IsNo: false,
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}, {
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Id: "no",
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Description: "keep the existing consensus rules",
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Bits: 0x0002, // Bit 1
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IsAbstain: false,
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IsNo: true,
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}, {
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Id: "yes",
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Description: "change to the new consensus rules",
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Bits: 0x0004, // Bit 2
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IsAbstain: false,
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IsNo: false,
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}},
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},
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StartTime: 1567641600, // Sep 5th, 2019
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ExpireTime: 1599264000, // Sep 5th, 2020
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}},
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8: {{
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Vote: Vote{
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Id: VoteIDTreasury,
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Description: "Enable decentralized Treasury opcodes as defined in DCP0006",
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Mask: 0x0006, // Bits 1 and 2
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Choices: []Choice{{
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Id: "abstain",
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Description: "abstain voting for change",
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Bits: 0x0000,
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IsAbstain: true,
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IsNo: false,
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}, {
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Id: "no",
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Description: "keep the existing consensus rules",
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Bits: 0x0002, // Bit 1
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IsAbstain: false,
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IsNo: true,
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}, {
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Id: "yes",
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Description: "change to the new consensus rules",
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Bits: 0x0004, // Bit 2
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IsAbstain: false,
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IsNo: false,
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}},
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},
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StartTime: 1596240000, // Aug 1st, 2020
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ExpireTime: 1627776000, // Aug 1st, 2021
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}},
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9: {{
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Vote: Vote{
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Id: VoteIDRevertTreasuryPolicy,
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Description: "Change maximum treasury expenditure policy as defined in DCP0007",
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Mask: 0x0006, // Bits 1 and 2
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Choices: []Choice{{
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Id: "abstain",
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Description: "abstain voting for change",
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Bits: 0x0000,
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IsAbstain: true,
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IsNo: false,
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}, {
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Id: "no",
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Description: "keep the existing consensus rules",
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Bits: 0x0002, // Bit 1
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IsAbstain: false,
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IsNo: true,
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}, {
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Id: "yes",
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Description: "change to the new consensus rules",
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Bits: 0x0004, // Bit 2
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IsAbstain: false,
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IsNo: false,
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}},
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},
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StartTime: 1631750400, // Sep 16th, 2021
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ExpireTime: 1694822400, // Sep 16th, 2023
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}, {
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Vote: Vote{
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Id: VoteIDExplicitVersionUpgrades,
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Description: "Enable explicit version upgrades as defined in DCP0008",
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Mask: 0x0018, // Bits 3 and 4
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Choices: []Choice{{
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Id: "abstain",
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Description: "abstain from voting",
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Bits: 0x0000,
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IsAbstain: true,
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IsNo: false,
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}, {
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Id: "no",
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Description: "keep the existing consensus rules",
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Bits: 0x0008, // Bit 3
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IsAbstain: false,
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IsNo: true,
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}, {
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Id: "yes",
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Description: "change to the new consensus rules",
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Bits: 0x0010, // Bit 4
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IsAbstain: false,
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IsNo: false,
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}},
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},
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StartTime: 1631750400, // Sep 16th, 2021
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ExpireTime: 1694822400, // Sep 16th, 2023
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}, {
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Vote: Vote{
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Id: VoteIDAutoRevocations,
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Description: "Enable automatic ticket revocations as defined in DCP0009",
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Mask: 0x0060, // Bits 5 and 6
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Choices: []Choice{{
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Id: "abstain",
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Description: "abstain voting for change",
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Bits: 0x0000,
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IsAbstain: true,
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IsNo: false,
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}, {
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Id: "no",
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Description: "keep the existing consensus rules",
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Bits: 0x0020, // Bit 5
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IsAbstain: false,
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IsNo: true,
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}, {
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Id: "yes",
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Description: "change to the new consensus rules",
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Bits: 0x0040, // Bit 6
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IsAbstain: false,
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IsNo: false,
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}},
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},
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StartTime: 1631750400, // Sep 16th, 2021
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ExpireTime: 1694822400, // Sep 16th, 2023
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}},
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},
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// Enforce current block version once majority of the network has
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// upgraded.
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// 75% (750 / 1000)
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//
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// Reject previous block versions once a majority of the network has
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// upgraded.
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// 95% (950 / 1000)
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BlockEnforceNumRequired: 750,
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BlockRejectNumRequired: 950,
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BlockUpgradeNumToCheck: 1000,
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// AcceptNonStdTxs is a mempool param to either accept and relay non
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// standard txs to the network or reject them
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AcceptNonStdTxs: false,
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// Address encoding magics
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NetworkAddressPrefix: "D",
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PubKeyAddrID: [2]byte{0x13, 0x86}, // starts with Dk
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PubKeyHashAddrID: [2]byte{0x07, 0x3f}, // starts with Ds
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PKHEdwardsAddrID: [2]byte{0x07, 0x1f}, // starts with De
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PKHSchnorrAddrID: [2]byte{0x07, 0x01}, // starts with DS
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ScriptHashAddrID: [2]byte{0x07, 0x1a}, // starts with Dc
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PrivateKeyID: [2]byte{0x22, 0xde}, // starts with Pm
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// BIP32 hierarchical deterministic extended key magics
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HDPrivateKeyID: [4]byte{0x02, 0xfd, 0xa4, 0xe8}, // starts with dprv
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HDPublicKeyID: [4]byte{0x02, 0xfd, 0xa9, 0x26}, // starts with dpub
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// BIP44 coin type used in the hierarchical deterministic path for
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// address generation.
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SLIP0044CoinType: 42, // SLIP0044, Decred
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LegacyCoinType: 20, // for backwards compatibility
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// Decred PoS parameters
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MinimumStakeDiff: 2 * 1e8, // 2 Coin
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TicketPoolSize: 8192,
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TicketsPerBlock: 5,
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TicketMaturity: 256,
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TicketExpiry: 40960, // 5*TicketPoolSize
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CoinbaseMaturity: 256,
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SStxChangeMaturity: 1,
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TicketPoolSizeWeight: 4,
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StakeDiffAlpha: 1, // Minimal
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StakeDiffWindowSize: 144,
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StakeDiffWindows: 20,
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StakeVersionInterval: 144 * 2 * 7, // ~1 week
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MaxFreshStakePerBlock: 20, // 4*TicketsPerBlock
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StakeEnabledHeight: 256 + 256, // CoinbaseMaturity + TicketMaturity
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StakeValidationHeight: 4096, // ~14 days
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StakeBaseSigScript: []byte{0x00, 0x00},
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StakeMajorityMultiplier: 3,
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StakeMajorityDivisor: 4,
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// Decred organization related parameters
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// Organization address is Dcur2mcGjmENx4DhNqDctW5wJCVyT3Qeqkx
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OrganizationPkScript: hexDecode("a914f5916158e3e2c4551c1796708db8367207ed13bb87"),
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OrganizationPkScriptVersion: 0,
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BlockOneLedger: tokenPayouts_MainNetParams(),
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// Sanctioned Politeia keys.
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PiKeys: [][]byte{
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hexDecode("03f6e7041f1cf51ee10e0a01cd2b0385ce3cd9debaabb2296f7e9dee9329da946c"),
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hexDecode("0319a37405cb4d1691971847d7719cfce70857c0f6e97d7c9174a3998cf0ab86dd"),
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},
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// ~1 day for tspend inclusion
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TreasuryVoteInterval: 288,
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// ~7.2 days for short circuit approval, ~42%
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// target=ticket-pool-equivalent participation
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TreasuryVoteIntervalMultiplier: 12,
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// Sum of tspends within any ~24 day window cannot exceed
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// policy check
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TreasuryExpenditureWindow: 2,
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// policy check is average of prior ~4.8 months + a 50%
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// increase allowance
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TreasuryExpenditurePolicy: 6,
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// 16000 dcr/tew as expense bootstrap
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TreasuryExpenditureBootstrap: 16000 * 1e8,
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TreasuryVoteQuorumMultiplier: 1, // 20% quorum required
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TreasuryVoteQuorumDivisor: 5,
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TreasuryVoteRequiredMultiplier: 3, // 60% yes votes required
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TreasuryVoteRequiredDivisor: 5,
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seeders: []string{
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"mainnet-seed-1.decred.org",
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"mainnet-seed-2.decred.org",
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"mainnet-seed.planetdecred.org",
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"mainnet-seed.dcrdata.org",
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"mainnet-seed.jholdstock.uk",
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},
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}
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}
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