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testnetparams.go
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testnetparams.go
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// Copyright (c) 2014-2016 The btcsuite developers
// Copyright (c) 2015-2023 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 (
"math/big"
"time"
"github.com/sebitt27/dcrd/chaincfg/chainhash"
"github.com/sebitt27/dcrd/wire"
)
// TestNet3Params return the network parameters for the test currency network.
// This network is sometimes simply called "testnet".
// This is the third public iteration of testnet.
func TestNet3Params() *Params {
// testNetPowLimit is the highest proof of work value a Decred block
// can have for the test network. It is the value 2^232 - 1.
testNetPowLimit := new(big.Int).Sub(new(big.Int).Lsh(bigOne, 232), bigOne)
// testNetPowLimitBits is the test network proof of work limit in its
// compact representation.
//
// Note that due to the limited precision of the compact representation,
// this is not exactly equal to the pow limit. It is the value:
//
// 0x000000ffff000000000000000000000000000000000000000000000000000000
const testNetPowLimitBits = 0x1e00ffff // 503382015
// genesisBlock defines the genesis block of the block chain which serves as
// the public transaction ledger for the test network (version 3).
genesisBlock := wire.MsgBlock{
Header: wire.BlockHeader{
Version: 6,
PrevBlock: chainhash.Hash{},
// MerkleRoot: Calculated below.
Timestamp: time.Unix(1533513600, 0), // 2018-08-06 00:00:00 +0000 UTC
Bits: testNetPowLimitBits, // Difficulty 1
SBits: 20000000,
Nonce: 0x18aea41a,
StakeVersion: 6,
},
Transactions: []*wire.MsgTx{{
SerType: wire.TxSerializeFull,
Version: 1,
TxIn: []*wire.TxIn{{
// Fully null.
PreviousOutPoint: wire.OutPoint{
Hash: chainhash.Hash{},
Index: 0xffffffff,
Tree: 0,
},
SignatureScript: hexDecode("0000"),
Sequence: 0xffffffff,
BlockHeight: wire.NullBlockHeight,
BlockIndex: wire.NullBlockIndex,
ValueIn: wire.NullValueIn,
}},
TxOut: []*wire.TxOut{{
Version: 0x0000,
Value: 0x00000000,
PkScript: hexDecode("801679e98561ada96caec2949a5d41c4cab3851e" +
"b740d951c10ecbcf265c1fd9"),
}},
LockTime: 0,
Expiry: 0,
}},
}
// NOTE: This really should be TxHashFull, but it was defined incorrectly.
//
// Since the field is not used in any validation code, it does not have any
// adverse effects, but correcting it would result in changing the block
// hash which would invalidate the entire test network. The next test
// network should set the value properly.
genesisBlock.Header.MerkleRoot = genesisBlock.Transactions[0].TxHash()
return &Params{
Name: "testnet3",
Net: wire.TestNet3,
DefaultPort: "19108",
DNSSeeds: []DNSSeed{
{"testnet-seed.decred.mindcry.org", true},
{"testnet-seed.decred.netpurgatory.com", true},
{"testnet-seed.decred.org", true},
},
// Chain parameters.
//
// Note that the minimum difficulty reduction parameter only applies up
// to and including block height 962927.
GenesisBlock: &genesisBlock,
GenesisHash: genesisBlock.BlockHash(),
PowLimit: testNetPowLimit,
PowLimitBits: testNetPowLimitBits,
ReduceMinDifficulty: true,
MinDiffReductionTime: time.Minute * 10, // ~99.3% chance to be mined before reduction
GenerateSupported: true,
MaximumBlockSizes: []int{1310720},
MaxTxSize: 1000000,
TargetTimePerBlock: time.Minute * 2,
// Version 1 difficulty algorithm (EMA + BLAKE256) parameters.
WorkDiffAlpha: 1,
WorkDiffWindowSize: 144,
WorkDiffWindows: 20,
TargetTimespan: time.Minute * 2 * 144, // TimePerBlock * WindowSize
RetargetAdjustmentFactor: 4,
// Version 2 difficulty algorithm (ASERT + BLAKE3) parameters.
WorkDiffV2Blake3StartBits: testNetPowLimitBits,
WorkDiffV2HalfLifeSecs: 720, // 6 * TimePerBlock (12 minutes)
// Subsidy parameters.
BaseSubsidy: 2500000000, // 25 Coin
MulSubsidy: 100,
DivSubsidy: 101,
SubsidyReductionInterval: 2048,
WorkRewardProportion: 6,
WorkRewardProportionV2: 1,
StakeRewardProportion: 3,
StakeRewardProportionV2: 8,
BlockTaxProportion: 1,
// AssumeValid is the hash of a block that has been externally verified
// to be valid. It allows several validation checks to be skipped for
// blocks that are both an ancestor of the assumed valid block and an
// ancestor of the best header. It is also used to determine the old
// forks rejection checkpoint. This is intended to be updated
// periodically with new releases.
//
// Block 00000000787986d95cef3b42beee6cc3c8065f6e5338e17854b1ff4d16b6a396
// Height: 1138320
AssumeValid: *newHashFromStr("00000000787986d95cef3b42beee6cc3c8065f6e5338e17854b1ff4d16b6a396"),
// MinKnownChainWork is the minimum amount of known total work for the
// chain at a given point in time. This is intended to be updated
// periodically with new releases.
//
// Block 000000001ffc25cb2cd323c82c5838971a9b191c2d4cf9530e1582fcb8b4794e
// Height: 1148390
MinKnownChainWork: hexToBigInt("000000000000000000000000000000000000000000000000f376cd394f056477"),
// Consensus rule change deployments.
//
// The miner confirmation window is defined as:
// target proof of work timespan / target proof of work spacing
RuleChangeActivationQuorum: 2520, // 10 % of RuleChangeActivationInterval * TicketsPerBlock
RuleChangeActivationMultiplier: 3, // 75%
RuleChangeActivationDivisor: 4,
RuleChangeActivationInterval: 5040, // 1 week
Deployments: map[uint32][]ConsensusDeployment{
5: {{
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,
}},
},
ForcedChoiceID: "yes",
StartTime: 1493164800, // Apr 26th, 2017
ExpireTime: 1524700800, // Apr 26th, 2018
}},
6: {{
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,
}},
},
ForcedChoiceID: "yes",
StartTime: 1505260800, // Sep 13th, 2017
ExpireTime: 1536796800, // Sep 13th, 2018
}},
7: {{
Vote: Vote{
Id: VoteIDFixLNSeqLocks,
Description: "Modify sequence lock handling as defined in DCP0004",
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: 1548633600, // Jan 28th, 2019
ExpireTime: 1580169600, // Jan 28th, 2020
}},
8: {{
Vote: Vote{
Id: VoteIDHeaderCommitments,
Description: "Enable header commitments as defined in DCP0005",
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: 1567641600, // Sep 5th, 2019
ExpireTime: 1599264000, // Sep 5th, 2020
}},
9: {{
Vote: Vote{
Id: VoteIDTreasury,
Description: "Enable decentralized Treasury opcodes as defined in DCP0006",
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: 1596240000, // Aug 1st, 2020
ExpireTime: 1627776000, // Aug 1st, 2021
}},
10: {{
Vote: Vote{
Id: VoteIDRevertTreasuryPolicy,
Description: "Change maximum treasury expenditure policy as defined in DCP0007",
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: 1631750400, // Sep 16th, 2021
ExpireTime: 1694822400, // Sep 16th, 2023
}, {
Vote: Vote{
Id: VoteIDExplicitVersionUpgrades,
Description: "Enable explicit version upgrades as defined in DCP0008",
Mask: 0x0018, // Bits 3 and 4
Choices: []Choice{{
Id: "abstain",
Description: "abstain from voting",
Bits: 0x0000,
IsAbstain: true,
IsNo: false,
}, {
Id: "no",
Description: "keep the existing consensus rules",
Bits: 0x0008, // Bit 3
IsAbstain: false,
IsNo: true,
}, {
Id: "yes",
Description: "change to the new consensus rules",
Bits: 0x0010, // Bit 4
IsAbstain: false,
IsNo: false,
}},
},
StartTime: 1631750400, // Sep 16th, 2021
ExpireTime: 1694822400, // Sep 16th, 2023
}, {
Vote: Vote{
Id: VoteIDAutoRevocations,
Description: "Enable automatic ticket revocations as defined in DCP0009",
Mask: 0x0060, // Bits 5 and 6
Choices: []Choice{{
Id: "abstain",
Description: "abstain voting for change",
Bits: 0x0000,
IsAbstain: true,
IsNo: false,
}, {
Id: "no",
Description: "keep the existing consensus rules",
Bits: 0x0020, // Bit 5
IsAbstain: false,
IsNo: true,
}, {
Id: "yes",
Description: "change to the new consensus rules",
Bits: 0x0040, // Bit 6
IsAbstain: false,
IsNo: false,
}},
},
StartTime: 1631750400, // Sep 16th, 2021
ExpireTime: 1694822400, // Sep 16th, 2023
}, {
Vote: Vote{
Id: VoteIDChangeSubsidySplit,
Description: "Change block reward subsidy split to 10/80/10 as defined in DCP0010",
Mask: 0x0180, // Bits 7 and 8
Choices: []Choice{{
Id: "abstain",
Description: "abstain from voting",
Bits: 0x0000,
IsAbstain: true,
IsNo: false,
}, {
Id: "no",
Description: "keep the existing consensus rules",
Bits: 0x0080, // Bit 7
IsAbstain: false,
IsNo: true,
}, {
Id: "yes",
Description: "change to the new consensus rules",
Bits: 0x0100, // Bit 8
IsAbstain: false,
IsNo: false,
}},
},
StartTime: 1631750400, // Sep 16th, 2021
ExpireTime: 1694822400, // Sep 16th, 2023
}},
11: {{
Vote: Vote{
Id: VoteIDBlake3Pow,
Description: "Change proof of work hashing algorithm to BLAKE3 as defined in DCP0011",
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: 1682294400, // Apr 24th, 2023
ExpireTime: 1745452800, // Apr 24th, 2025
}, {
Vote: Vote{
Id: VoteIDChangeSubsidySplitR2,
Description: "Change block reward subsidy split to 1/89/10 as defined in DCP0012",
Mask: 0x0060, // Bits 5 and 6
Choices: []Choice{{
Id: "abstain",
Description: "abstain voting for change",
Bits: 0x0000,
IsAbstain: true,
IsNo: false,
}, {
Id: "no",
Description: "keep the existing consensus rules",
Bits: 0x0020, // Bit 5
IsAbstain: false,
IsNo: true,
}, {
Id: "yes",
Description: "change to the new consensus rules",
Bits: 0x0040, // Bit 6
IsAbstain: false,
IsNo: false,
}},
},
StartTime: 1682294400, // Apr 24th, 2023
ExpireTime: 1745452800, // Apr 24th, 2025
}},
},
// Enforce current block version once majority of the network has
// upgraded.
// 51% (51 / 100)
// Reject previous block versions once a majority of the network has
// upgraded.
// 75% (75 / 100)
BlockEnforceNumRequired: 51,
BlockRejectNumRequired: 75,
BlockUpgradeNumToCheck: 100,
// AcceptNonStdTxs is a mempool param to either accept and relay non
// standard txs to the network or reject them
AcceptNonStdTxs: true,
// Address encoding magics
NetworkAddressPrefix: "T",
PubKeyAddrID: [2]byte{0x28, 0xf7}, // starts with Tk
PubKeyHashAddrID: [2]byte{0x0f, 0x21}, // starts with Ts
PKHEdwardsAddrID: [2]byte{0x0f, 0x01}, // starts with Te
PKHSchnorrAddrID: [2]byte{0x0e, 0xe3}, // starts with TS
ScriptHashAddrID: [2]byte{0x0e, 0xfc}, // starts with Tc
PrivateKeyID: [2]byte{0x23, 0x0e}, // starts with Pt
// BIP32 hierarchical deterministic extended key magics
HDPrivateKeyID: [4]byte{0x04, 0x35, 0x83, 0x97}, // starts with tprv
HDPublicKeyID: [4]byte{0x04, 0x35, 0x87, 0xd1}, // starts with tpub
// BIP44 coin type used in the hierarchical deterministic path for
// address generation.
SLIP0044CoinType: 1, // SLIP0044, Testnet (all coins)
LegacyCoinType: 11, // for backwards compatibility
// Decred PoS parameters
MinimumStakeDiff: 20000000, // 0.2 Coin
TicketPoolSize: 1024,
TicketsPerBlock: 5,
TicketMaturity: 16,
TicketExpiry: 6144, // 6*TicketPoolSize
CoinbaseMaturity: 16,
SStxChangeMaturity: 1,
TicketPoolSizeWeight: 4,
StakeDiffAlpha: 1,
StakeDiffWindowSize: 144,
StakeDiffWindows: 20,
StakeVersionInterval: 144 * 2 * 7, // ~1 week
MaxFreshStakePerBlock: 20, // 4*TicketsPerBlock
StakeEnabledHeight: 16 + 16, // CoinbaseMaturity + TicketMaturity
StakeValidationHeight: 768, // Arbitrary
StakeBaseSigScript: []byte{0x00, 0x00},
StakeMajorityMultiplier: 3,
StakeMajorityDivisor: 4,
// Decred organization related parameters.
// Organization address is TcrypGAcGCRVXrES7hWqVZb5oLJKCZEtoL1.
OrganizationPkScript: hexDecode("a914d585cd7426d25b4ea5faf1e6987aacfeda3db94287"),
OrganizationPkScriptVersion: 0,
BlockOneLedger: tokenPayouts_TestNet3Params(),
// Sanctioned Politeia keys.
PiKeys: [][]byte{
hexDecode("03beca9bbd227ca6bb5a58e03a36ba2b52fff09093bd7a50aee1193bccd257fb8a"),
hexDecode("03e647c014f55265da506781f0b2d67674c35cb59b873d9926d483c4ced9a7bbd3"),
},
// ~2 hours for tspend inclusion
TreasuryVoteInterval: 60,
// ~4.8 hours for short circuit approval
TreasuryVoteIntervalMultiplier: 4,
// ~1 day policy window
TreasuryExpenditureWindow: 4,
// ~6 day policy window check
TreasuryExpenditurePolicy: 3,
// 10000 dcr/tew as expense bootstrap
TreasuryExpenditureBootstrap: 10000 * 1e8,
TreasuryVoteQuorumMultiplier: 1, // 20% quorum required
TreasuryVoteQuorumDivisor: 5,
TreasuryVoteRequiredMultiplier: 3, // 60% yes votes required
TreasuryVoteRequiredDivisor: 5,
seeders: []string{
"testnet-seed-1.decred.org",
"testnet-seed-2.decred.org",
"testnet-seed.dcrdata.org",
"testnet-seed.jholdstock.uk",
},
}
}