Package org.bitcoinj.params

Class TestNet3Params

java.lang.Object

org.bitcoinj.core.NetworkParameters

org.bitcoinj.params.BitcoinNetworkParams

org.bitcoinj.params.TestNet3Params

public class TestNet3Params
extends BitcoinNetworkParams

Parameters for the testnet, a separate public instance of Bitcoin that has relaxed rules suitable for development and testing of applications and new Bitcoin versions.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	TESTNET_MAJORITY_ENFORCE_BLOCK_UPGRADE
static final int	TESTNET_MAJORITY_REJECT_BLOCK_OUTDATED
static final int	TESTNET_MAJORITY_WINDOW

Fields inherited from class org.bitcoinj.params.BitcoinNetworkParams

BITCOIN_SCHEME, genesisBlock, REWARD_HALVING_INTERVAL

Fields inherited from class org.bitcoinj.core.NetworkParameters

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

Constructor Summary

Constructors

Constructor	Description
TestNet3Params()

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.
static TestNet3Params	get()
Block	getGenesisBlock()	Genesis block for this chain.

Methods inherited from class org.bitcoinj.params.BitcoinNetworkParams

fromID, getBlockInflation, getMaxMoney, getMonetaryFormat, getPaymentProtocolId, getSerializer, getUriScheme, hasMaxMoney, isDifficultyTransitionPoint, isRewardHalvingPoint, of

Methods inherited from class org.bitcoinj.core.NetworkParameters

allowEmptyPeerChain, equals, fromAddress, fromPmtProtocolID, getAddressHeader, getAddrSeeds, getBip32HeaderP2PKHpriv, getBip32HeaderP2PKHpub, getBip32HeaderP2WPKHpriv, getBip32HeaderP2WPKHpub, getBlockVerificationFlags, getDefaultSerializer, getDnsSeeds, getDumpedPrivateKeyHeader, getId, getInterval, getMajorityEnforceBlockUpgrade, getMajorityRejectBlockOutdated, getMajorityWindow, getMaxTarget, getP2SHHeader, getPacketMagic, getPort, getProtocolVersionNum, getSegwitAddressHrp, getSpendableCoinbaseDepth, getSubsidyDecreaseBlockCount, getTargetTimespan, getTransactionVerificationFlags, hashCode, isCheckpoint, network, of, passesCheckpoint

Methods inherited from class java.lang.Object

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

Field Details

TESTNET_MAJORITY_WINDOW

public static final int TESTNET_MAJORITY_WINDOW

See Also:

• Constant Field Values

TESTNET_MAJORITY_REJECT_BLOCK_OUTDATED

public static final int TESTNET_MAJORITY_REJECT_BLOCK_OUTDATED

See Also:

• Constant Field Values

TESTNET_MAJORITY_ENFORCE_BLOCK_UPGRADE

public static final int TESTNET_MAJORITY_ENFORCE_BLOCK_UPGRADE

See Also:

• Constant Field Values

Constructor Details

TestNet3Params

public TestNet3Params()

Method Details

get

public static TestNet3Params get()

getGenesisBlock

public Block getGenesisBlock()

Description copied from class: NetworkParameters

Genesis block for this chain.

The first block in every chain is a well known constant shared between all Bitcoin implementations. For a block to be valid, it must be eventually possible to work backwards to the genesis block by following the prevBlockHash pointers in the block headers.

The genesis blocks for both test and main networks contain the timestamp of when they were created, and a message in the coinbase transaction. It says, "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks".

Specified by:

getGenesisBlock in class NetworkParameters

Returns:

genesis block

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.

Overrides:

checkDifficultyTransitions in class BitcoinNetworkParams

Parameters:

storedPrev - previous stored block

nextBlock - proposed block

blockStore - active BlockStore

Throws:

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

BlockStoreException - if an error occurred accessing the BlockStore