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I have created a altcoin using the reference of LTC and already 170k blocks were formed. Now i want to change the conformation time as well as i want the difficulty to start from base difficulty.Basically i want to Hard fork the coin, & for that i recompiled the the code with new parameters and started the daemon.

And now i dont think the approach i took is leading me to proper direction as:

1)I am not at all able to bring the difficulty down to base difficulty. (according my new code,difficulty shoud get adjusted after each block) &

2) some of the new node could not even get the copy of ledger even after they are connected to pre existing healthy nodes.

debug.log says:

2018-06-12 09:14:49   nActualTimespan = 0  before bounds  
2018-06-12 09:14:49 GetNextWorkRequired RETARGET  
2018-06-12 09:14:49 nTargetTimespan = 15    nActualTimespan = 3 
2018-06-12 09:14:49 Before: 1e0ffff0  00000ffff0000000000000000000000000000000000000000000000000000000  
2018-06-12 09:14:49 After:  1e033330  0000033330000000000000000000000000000000000000000000000000000000  
2018-06-12 09:14:49 ERROR: AcceptBlock() : incorrect proof of work  
2018-06-12 09:14:49 ERROR: ProcessBlock() : AcceptBlock FAILED

Can someone tell me is there other way by which i can Hardfork a altcoin. Or can someone suggest me what my next step could be

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  • If you recalculate the difficulty after each block, have you been able to solve a block at the previous difficulty? I would be surprised because the hash rate on LTC is so high.
    – JBaczuk
    Jun 12, 2018 at 13:46
  • Actually it was not forked from LTC, the source code i used was that of LTC but blockchain was started from genesis block so starting difficulty was 0.00024414
    – cryptoKTM
    Jun 12, 2018 at 14:06
  • I'm confused, why do you call it a hard fork?
    – JBaczuk
    Jun 12, 2018 at 14:14
  • I am sorry that was my mistake to call this altcoin as fork of LTC. But what i want to implement after block no 170k in my altcoin is Hardfork
    – cryptoKTM
    Jun 12, 2018 at 14:24
  • Got, it thanks for the clarification. It appears the validity checks are still failing, can you check AcceptBlock() for where it is failing. Could be this, for example: bool fHasMoreOrSameWork = (chainActive.Tip() ? pindex->nChainWork >= chainActive.Tip()->nChainWork : true);
    – JBaczuk
    Jun 12, 2018 at 14:40

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