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Topic: Problem with difficulty adjustment (Read 1729 times)

hero member
Activity: 567
Merit: 500
In gold I trust - Aurumcoin www.cointech.net
June 05, 2015, 01:25:21 AM
#2
Any ideas how to fix the diff? 500 MOBI Bounty for fix!!
hero member
Activity: 567
Merit: 500
In gold I trust - Aurumcoin www.cointech.net
June 04, 2015, 04:33:51 AM
#1
Hello guys,

Can you help me with the difficulty adjustment in bitcoinj? I have these settings in the MainNetParams.java:

Quote
packetMagic = 0xf9beb4d9L;
        genesisBlock.setDifficultyTarget(486604799L);
        genesisBlock.setTime(1408829075L);
        genesisBlock.setNonce(3470356538L);
        id = ID_MAINNET;
        subsidyDecreaseBlockCount = 210000;
        spendableCoinbaseDepth = 100;

Quote
        checkpoints.put(2015, new Sha256Hash("00000000cac5b0f9b3eb252f8273701752765fa4f1fdbd4101d3937cac4dd2aa"));
        checkpoints.put(2016, new Sha256Hash("000000000dcb1920a540da59ab0306b0d40b047650ada9af46924ec47f84e183"));
        checkpoints.put(17951, new Sha256Hash("000000000000773f09329ac46f03357d777f8563d3610ea56f2577e65c3f1099"));
        checkpoints.put(19990, new Sha256Hash("000000000000978242fab50fed6d182531ada338df730b4ee8fe97045956a0aa"));
        checkpoints.put(20000, new Sha256Hash("000000000001614311d0f0d912ef0e55b9581cea7757454f889048ae1a0cac2f"));
        checkpoints.put(24508, new Sha256Hash("0000000000001022c6fc422b79a9f24b05fce756ca8bce489a8f1ecc24f1ea95"));
        checkpoints.put(25009, new Sha256Hash("00000000000003b4fb3e0ef3606a72c4e9d254f242555c65b1f566dbb2bd111c"));

I can compile it, but when run mvn exec:java -Dexec.mainClass=org.bitcoinj.tools.BuildCheckpoints see this error (and sleep after the error):

03:23:36 13 Peer.processHeaders: Block header verification failed
org.bitcoinj.core.VerificationException: Could not verify block 000000000dcb1920a540da59ab0306b0d40b047650ada9af46924ec47f84e183
v2 block:
   previous block: 00000000cac5b0f9b3eb252f8273701752765fa4f1fdbd4101d3937cac4dd2aa
   merkle root: 3529dbcb4b93c126aa4711fa9c2a72acce47bb8f1f10e859c7175daef3344460
   time: [1410172566] 2014-09-08T10:36:06Z
   difficulty target (nBits): 473956288
   nonce: 2788947264

the coin is mobiuscoin, the block explorer is http://mobiblocks.cointech.net and can you see that the 2015 is with diff 1, 2016 is with diff 4.

Any idea where is the problem and how to solve it?
When I compile bitcoin-wallet (4.30) with removed chepoints.txt file, the wallet retrieve blocks 0-2015 and stop the download. I think that is the same problem.

Best Regards,
Rossen


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