/*
* Copyright 2013 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.bitcoin.params;
import com.google.bitcoin.core.NetworkParameters;
import com.google.bitcoin.core.Sha256Hash;
import com.google.bitcoin.core.Utils;
import static com.google.common.base.Preconditions.checkState;
/**
* Parameters for the main production network on which people trade goods and services.
*/
public class MainNetParams extends NetworkParameters {
public MainNetParams() {
super();
interval = INTERVAL;
targetTimespan = TARGET_TIMESPAN;
proofOfWorkLimit = Utils.decodeCompactBits(0x1d00ffffL);
dumpedPrivateKeyHeader = 128;
addressHeader = 0;
p2shHeader = 5;
acceptableAddressCodes = new int[] { addressHeader, p2shHeader };
port = 8333;
packetMagic = 0xf9beb4d9L;
genesisBlock.setDifficultyTarget(0x1d00ffffL);
genesisBlock.setTime(1231006505L);
genesisBlock.setNonce(2083236893);
id = ID_MAINNET;
subsidyDecreaseBlockCount = 210000;
spendableCoinbaseDepth = 100;
String genesisHash = genesisBlock.getHashAsString();
checkState(genesisHash.equals("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"),
genesisHash);
// This contains (at a minimum) the blocks which are not BIP30 compliant. BIP30 changed how duplicate
// transactions are handled. Duplicated transactions could occur in the case where a coinbase had the same
// extraNonce and the same outputs but appeared at different heights, and greatly complicated re-org handling.
// Having these here simplifies block connection logic considerably.
checkpoints.put(91722, new Sha256Hash("00000000000271a2dc26e7667f8419f2e15416dc6955e5a6c6cdf3f2574dd08e"));
checkpoints.put(91812, new Sha256Hash("00000000000af0aed4792b1acee3d966af36cf5def14935db8de83d6f9306f2f"));
checkpoints.put(91842, new Sha256Hash("00000000000a4d0a398161ffc163c503763b1f4360639393e0e4c8e300e0caec"));
checkpoints.put(91880, new Sha256Hash("00000000000743f190a18c5577a3c2d2a1f610ae9601ac046a38084ccb7cd721"));
checkpoints.put(200000, new Sha256Hash("000000000000034a7dedef4a161fa058a2d67a173a90155f3a2fe6fc132e0ebf"));
dnsSeeds = new String[] {
"seed.bitcoin.sipa.be", // Pieter Wuille
"dnsseed.bluematt.me", // Matt Corallo
"dnsseed.bitcoin.dashjr.org", // Luke Dashjr
"seed.bitcoinstats.com", // Chris Decker
};
}
private static MainNetParams instance;
public static synchronized MainNetParams get() {
if (instance == null) {
instance = new MainNetParams();
}
return instance;
}
public String getPaymentProtocolId() {
return PAYMENT_PROTOCOL_ID_MAINNET;
}
}