Package org.bitcoinj.params

Class AbstractBitcoinNetParams

java.lang.Object

org.bitcoinj.core.NetworkParameters

org.bitcoinj.params.AbstractBitcoinNetParams

Direct Known Subclasses:

MainNetParams, RegTestParams, TestNet3Params, UnitTestParams

public abstract class AbstractBitcoinNetParams
extends NetworkParameters

Parameters for Bitcoin-like networks.

Nested Class Summary

Nested classes/interfaces inherited from class org.bitcoinj.core.NetworkParameters

NetworkParameters.ProtocolVersion

Field Summary

Fields

Modifier and Type	Field	Description
static final String	BITCOIN_SCHEME	Scheme part for Bitcoin URIs.
protected Block	genesisBlock	lazy-initialized by the first call to NetworkParameters.getGenesisBlock()
static final int	REWARD_HALVING_INTERVAL

Fields inherited from class org.bitcoinj.core.NetworkParameters

addressHeader, addrSeeds, BIP16_ENFORCE_TIME, bip32HeaderP2PKHpriv, bip32HeaderP2PKHpub, bip32HeaderP2WPKHpriv, bip32HeaderP2WPKHpub, checkpoints, defaultSerializer, dnsSeeds, dumpedPrivateKeyHeader, httpSeeds, id, ID_MAINNET, ID_REGTEST, ID_TESTNET, ID_UNITTESTNET, interval, INTERVAL, majorityEnforceBlockUpgrade, majorityRejectBlockOutdated, majorityWindow, MAX_COINS, MAX_MONEY, maxTarget, p2shHeader, packetMagic, PAYMENT_PROTOCOL_ID_MAINNET, PAYMENT_PROTOCOL_ID_REGTEST, PAYMENT_PROTOCOL_ID_TESTNET, PAYMENT_PROTOCOL_ID_UNIT_TESTS, port, segwitAddressHrp, spendableCoinbaseDepth, subsidyDecreaseBlockCount, TARGET_SPACING, TARGET_TIMESPAN, targetTimespan

Constructor Summary

Constructors

Constructor	Description
AbstractBitcoinNetParams()

Method Summary

Modifier and Type	Method	Description
void	checkDifficultyTransitions(StoredBlock storedPrev, Block nextBlock, BlockStore blockStore)	Throws an exception if the block's difficulty is not correct.
Coin	getBlockInflation(int height)	A utility method that calculates how much new Bitcoin would be created by the block at the given height.
Coin	getMaxMoney()	Returns the number of coins that will be produced in total, on this network.
Coin	getMinNonDustOutput()	Deprecated. use TransactionOutput.getMinNonDustValue()
MonetaryFormat	getMonetaryFormat()	The monetary object for this currency.
int	getProtocolVersionNum(NetworkParameters.ProtocolVersion version)
BitcoinSerializer	getSerializer(boolean parseRetain)	Construct and return a custom serializer.
String	getUriScheme()	Scheme part for URIs, for example "bitcoin".
boolean	hasMaxMoney()	Returns whether this network has a maximum number of coins (finite supply) or not.
final boolean	isDifficultyTransitionPoint(int previousHeight)	Checks if we are at a difficulty transition point.
final boolean	isRewardHalvingPoint(int previousHeight)	Checks if we are at a reward halving point.

Methods inherited from class org.bitcoinj.core.NetworkParameters

allowEmptyPeerChain, equals, fromID, fromPmtProtocolID, getAddressHeader, getAddrSeeds, getBip32HeaderP2PKHpriv, getBip32HeaderP2PKHpub, getBip32HeaderP2WPKHpriv, getBip32HeaderP2WPKHpub, getBlockVerificationFlags, getDefaultSerializer, getDnsSeeds, getDumpedPrivateKeyHeader, getGenesisBlock, getHttpSeeds, getId, getInterval, getMajorityEnforceBlockUpgrade, getMajorityRejectBlockOutdated, getMajorityWindow, getMaxTarget, getP2SHHeader, getPacketMagic, getPaymentProtocolId, getPort, getSegwitAddressHrp, getSpendableCoinbaseDepth, getSubsidyDecreaseBlockCount, getTargetTimespan, getTransactionVerificationFlags, hashCode, isCheckpoint, passesCheckpoint

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Details

BITCOIN_SCHEME

public static final String BITCOIN_SCHEME

Scheme part for Bitcoin URIs.

See Also:

• Constant Field Values

REWARD_HALVING_INTERVAL

public static final int REWARD_HALVING_INTERVAL

See Also:

• Constant Field Values

genesisBlock

protected Block genesisBlock

lazy-initialized by the first call to NetworkParameters.getGenesisBlock()

Constructor Details

AbstractBitcoinNetParams

public AbstractBitcoinNetParams()

Method Details

isRewardHalvingPoint

public final boolean isRewardHalvingPoint(int previousHeight)

Checks if we are at a reward halving point.

Parameters:

previousHeight - The height of the previous stored block

Returns:

If this is a reward halving point

getBlockInflation

public Coin getBlockInflation(int height)

A utility method that calculates how much new Bitcoin would be created by the block at the given height. The inflation of Bitcoin is predictable and drops roughly every 4 years (210,000 blocks). At the dawn of the system it was 50 coins per block, in late 2012 it went to 25 coins per block, and so on. The size of a coinbase transaction is inflation plus fees.

The half-life is controlled by NetworkParameters.getSubsidyDecreaseBlockCount().

Parameters:

height - the height of the block to calculate inflation for

isDifficultyTransitionPoint

public final boolean isDifficultyTransitionPoint(int previousHeight)

Checks if we are at a difficulty transition point.

Parameters:

previousHeight - The height of the previous stored block

Returns:

If this is a difficulty transition point

checkDifficultyTransitions

public void checkDifficultyTransitions(StoredBlock storedPrev,
 Block nextBlock,
 BlockStore blockStore)
                                throws VerificationException,
BlockStoreException

Description copied from class: NetworkParameters

Throws an exception if the block's difficulty is not correct.

Specified by:

checkDifficultyTransitions in class NetworkParameters

Throws:

VerificationException - if the block's difficulty is not correct.

BlockStoreException

getMaxMoney

public Coin getMaxMoney()

Description copied from class: NetworkParameters

Returns the number of coins that will be produced in total, on this network. Where not applicable, a very large number of coins is returned instead (i.e. the main coin issue for Dogecoin).

Specified by:

getMaxMoney in class NetworkParameters

getMinNonDustOutput

@Deprecated
public Coin getMinNonDustOutput()

Deprecated.

use TransactionOutput.getMinNonDustValue()

Specified by:

getMinNonDustOutput in class NetworkParameters

getMonetaryFormat

public MonetaryFormat getMonetaryFormat()

Description copied from class: NetworkParameters

The monetary object for this currency.

Specified by:

getMonetaryFormat in class NetworkParameters

getProtocolVersionNum

public int getProtocolVersionNum(NetworkParameters.ProtocolVersion version)

Specified by:

getProtocolVersionNum in class NetworkParameters

getSerializer

public BitcoinSerializer getSerializer(boolean parseRetain)

Description copied from class: NetworkParameters

Construct and return a custom serializer.

Specified by:

getSerializer in class NetworkParameters

getUriScheme

public String getUriScheme()

Description copied from class: NetworkParameters

Scheme part for URIs, for example "bitcoin".

Specified by:

getUriScheme in class NetworkParameters

hasMaxMoney

public boolean hasMaxMoney()

Description copied from class: NetworkParameters

Returns whether this network has a maximum number of coins (finite supply) or not. Always returns true for Bitcoin, but exists to be overridden for other networks.

Specified by:

hasMaxMoney in class NetworkParameters