This is the sources: https://github.com/karmateam?tab=repositories

Yes. I am not sure it would be exactly X11 as I did not make its performance/power consumption test yet. As the memory-intensive algorithms are not the barrier anymore for ASIC developers, I would prefer not to use anything memory-dependent that makes GPU mining two times more expensive according to my tests.

i am so sad that you encounter the problem,,,,

Can this coin still be mined?

Thank you all for warm words.

To keep you informed:

As I already mentioned I am presently making the transition to leveldb use and, more important, to multilevel organisation of the blocks database. The reason to do this is a big number of blocks in the chain. We just passed the block 600000 and this done in just 6 months and the chain expected to grow with the same speed. The full import of the preliminary filtered from orphans block chain file  (580000 blocks of the main Grain chain) requires about 7 hours on AMD Athlon II X2 270 3.40GHz (dual core) with the current official wallet. The start up of the current wallet also takes about 7-8 minutes (not counting the time to synchronize with network)! This has to be changed as otherwise no one will be able to use the Grain even with fixes of the PoW diff. Some improvements of performance already achieved: the full import of that sample requires ~20% less time with my current development version of the wallet.

Someone would ask: why I am talking about the import? This is not the regular task of a wallet. The answer is simple: the blocks that are read from the file are passed to exactly the same function ProcessBlock that is used to accept a blocks received from network. So, now this process takes 20% less time. In computing industry this means that you spend 20% less electricity to fulfill the task.  

Unfortunately, the Grain source code was forked from very old version of Novacoin. To be more precise, it seems that it had been forked from Bottlecaps which, in turn, is a fork of Novacoin (I see some comments/captions in different files that mention Bottlecaps). The sad thing that since source code forking not only bosian, but Bottlecaps dev as well, have not paid attention to the ongoing development and fixes released by Balthazar, his team and other people. So this is very old code and I am bringing it more or less in sync with Novacoin to make it possible merge in the required changes. This could not be done automatically as not every change in Novacoin code is relevant to Grain. The code is very big and quite complex, so this process is not fast.

I don't want to make any estimation now, but I put a goal for myself to finalize this when we reach the block 6300000 so we could schedule the fork at block 650000.

I am sorry for being so detailing. I understand that many of you are technically skilled people, but I think not all of you.

Regards,

bee7

Edit:

I forgot to say that I bought all domains: graincoin.org, graincoin.net, graincoin.info and graincoin.io. So if someone has web design skills and want to maintain the site then we could do this. The only problem is that I have no password to the 'master' site at http://graincoin.webs.com, so we need to find another hosting (as graincoin at webs.com is already occupied)

Once you are fully synced, try running repairwallet in the debug console.

If that doesn't work, try the -rescan commandline option.

Note that if your tx was orphaned due to a fork it is likely that coins you mined were also on that (invalid) fork. You won't be able to use those once you are back on the correct chain.

How long did it take to get from 475111 to 475893? When testing another coin I noticed that once the client forked, syncing slowed to a glacial rate (to advance a single block may have taken up to half a minute) and in the meantime the client was going crazy trying to resolve the fork (see https://bitcointalk.org/index.php?topic=604677 )

If your client is also similarly slow you may need to delete the blockchain db and start over. As a bonus this should relink all of your mined coins.

edit: I cannot see txid 86e772c87c27e37c76c65e02a470efee37a47ec39c0250e8fef686c964c63980 which lends credence to the possibility of you having forked.

Try in the debug console: getblockhash 475893

Hash value for block 475893 is c1e9f16f39ae96a14000d0c4300992454ee9ef752d937cfe1141cb0f18cce797 at this end. If your value is different, you are forked (or I am!)

What block number your wallet reports presently?

Hi, Graincoiners.

It's been a long time since I last posted here. Unfortunately, in March and beginning of April I had no time for all this crypto things. When I got some spare minutes I found that bosian is gone. I tried to contact him with PM and skype for a month already to no avail. Also, I was told by the man who had some business with bosian that he also could not get in touch. At the same time I monitored this thread for last three weeks and taking to account that my node has connections I understand that some adepts of Grain are still around.

Many of you could remember that I did a fix to the Grain wallet that was related to bonus blocks harvesting, so you might have some proof of my skills. I looked into the problem with PoW difficulty as I want to PoW-mine Grains and found the solution, so I am ready to release the fix.

The fix will cause a hard fork so all important public services should be notified in advance. ATM we have three exchanges and one payment processor (may be more services, I need to check the list at the OP).

Also, I got a positive response from the current Grain domains owner regarding buying back these domains so we could keep the sites alive as well.

I am not strong enough (better to say not at all) in marketing, but I see that Turbosx50 is ready to care about this part.

Taking all said above do you want me to take over the Grain and become its major developer?

bee7.

P.S.
@almightyruler: I believe that the high traffic volume is related to the very low PoW difficulty atm and the PoW problem to be fixed.

@BitcoinNational: What did you do useful for crypto coins community for all your time on this forum apart from posting shit about the coins you don't like? This is a rethorical question.

@ofeefee: the ABE block explorer code need to be fixed as it does not support the unique feature of Grain coin (the bonus block reward that is send as a second coinbase tx in the next block). I am looking into the possibility to fix it or to use alternative implementations.

Are you looking to SPEND some Graincoins?

We're launching JuggaloCoin next week, and we are accepting Graincoin (as well as 51 other alt coins) for purchaing slots in our "Insane Coin Posse" (like an IPO).

It's a great chance to put some Graincoin to use and get in FIRST on this hot new coin.

   >>>> https://bitcointalk.org/index.php?topic=555896.0

  i think grain is as solid as an alternate of bitcoin could ever be. the devs are among for sure the finest of Engineers. just need to grab the public eye. i was thinking, ...colored coins ... random superblocks ... rare supercoins?   idk, maybe ...

Good news.

There is mBTC/Grain excahnge on coinedup.

we´re running the client on an ubuntu server too...

by the way... there´re 21 blocks left of our 1k harvest bounty...