Topic: [ANN] SpreadCoin | True Decentralization (No Pools) | Testing New Masternodes - page 423. (Read 810119 times)

It is important if both miner and pool knows the private key. Whoever will be first to broadcast the spending transaction to other miners will win.

Pool can give different private keys to different miners.

Yes.

I updated builds, should work now:
Windows wallet
Mac OS X wallet
Linux wallet

AFAIK, it makes no difference to send the new block to the pool or send it directly to the network, since it doesn't matter who posts it, but ratter who is able to retrieve it. Since the miner must have the PK to mine, it can always spend the money from the pool, even the blocks he did not mine by himself.

And if I get that right, to be accepted the block must not only hash to a certain difficulty, but also the generated coins must be sent to the same address that signs the block? So i can't mine directly to more than one address like p2pool does?

I found what was wrong. I am now making new builds, this will take some time (1-2 hours). I will release new builds and at the same time commit changes to github.

During my testing everything was ok but now something went wrong, I'm looking at it now, will try to fix as soon as possible.

still stuck at block 43000.

Whats going on?

After block 43000 it seems no new block is found, and almost an hour passed already. (New block should approx be each ten minutes on my system.)
But also the block explorer does not show any new block above, nor getmining info.
I have also experienced halving of the hashrate.

21:33:13
{
"blocks" : 43000,
"currentblocksize" : 1000,
"currentblocktx" : 0,
"difficulty" : 0.00906820,
"errors" : "",
"generate" : true,
"genproclimit" : 8,
"hashespersec" : 59701,
"networkhashps" : 731453,
"pooledtx" : 0,
"testnet" : false
}

Dev, can you please comment this?

Regards,
Andy

Thank you, already updated.

Regards,
Andy

got it running and nice!!

Nice. Does exactly what it says on the tin. I like the block spacing estimate, most useful.

Cheers

Graham

Finally, here it is:
Windows wallet
Mac OS X wallet
Linux wallet

Hardfork is set to block 43000.
The general idea is that there is some additional information in each block that proofs that miner knows whole block and private key for spending coinbase transaction. That means that if you mine in a pool you can submit shares as usual and get reward for them but if you will actually find a valid block then you can send it directly to the network instead of the pool and get full reward for it. Pool may detect it and ban you but this is still may be advantageous for you. If your mining power gives you low probability of finding a block then if you will accidentally find a block it gives you more profit even if the pool will ban you for not sharing this block. If you have enough mining power to find blocks consistently then you can connect to a pool and submit shares for some time but steal the first found block, this way you can get both reward for your shares and actual block that you mined, this is like doubling your hashrate.
Given all this I don't expect that anyone will create a pool. But if someone will then I will modify whatever miner software will be used for it to implement the stealing described above, we may expect that most pool miners will then switch to this cheating version which will make this pool useless.

Also I made built-in GUI for the miner. Currently it is still the same CPU miner but in the future I want to make as interface to external miners. Other developers (and me) will be able to independently create CPU and GPU miners and fastest such miners will be distributed with the wallet and available from GUI.

I changed difficulty retarget to six hours. I don't want to set it to lower values because then it may become vulnerable to manipulation by setting improper block timestamps.

Existing GPU miner will become unusable after the fork point because of the modifications to the mining algorithm which are necessary to prevent pools.

Mr. Spread,

can you make the difficulty algo adapting faster to the changes of network hashrate?
Maybe one hour, instead of 24 hours... It is 60 blocks. It should be much more fair.
Now the coin generation speeds much, and then slows to the snail rate, while the "weak" network nibbles through many hard blocks.

Regards,
Andy

I agree...
But pure solo mining means greater decentralization, and it is difference point against competition.
I, personally, can live with pure solo mining, but welcome the pool possibility.
It is a tradeoff.

Maybe, if some mechanism which will equal the rewards a bit...  if someone with lower hashrate catches a block very rarely, and is unlucky in comparison to what he should get (considering ratio of his and the whole network hashrate), then if some sort of luck equalising algo will kick in...
When the block is found, and the founder has more coins than he should, maybe the algo waits a bit more if someone unlucky did not get the hash too, and then reward go to the unlucky one, to balance out the luck deviation.

This will partially even up the mining rate.

Regards,
Andy

the pool mining has a good advantage: miners get coins continuously! Imagine: there are 2 miners, one with a large hashpower, other with small hashpower. If the small miner has a big unlucky, he run the cpu days without coin. While, in pool mining, the smaller miner get every hour/day/etc a small coins.

I have discovered it immediately, on 3rd september, see my post above.

I am looking forward the announcement.
Maybe it would really be big attraction point to make the coin only CPU mineable, and solo mineable.
But: if someone "breakes" the restriction, and that "solution" will not be available to all miners, it makes him extremely favourable in comparison to the rest of the community.

Regards,
Andy

Seems that someone is using a GPU miner, look at these difficulty variations:


Meanwhile, I found some blocks with very strange difficulty, I need to found out is it some bug in difficulty adjustment or are they just some artifacts.

Awesome most are waiting and of course you didnt run , you just posted lol  and great on the update

great news! :-D thanks for the update!

I hope no one thinks that I just took the money and ran away 
We will be ready to make a fork tomorrow or in the day after tomorrow.

Yes, this will be my next task.

Sorry, this one passed me by, didn't scroll up far enough.
 
I think it's most intriguing. With 1500+ altcoins already launched, a genuine and significant USP (unique selling point) is rather valuable --- and, if I don't miss my guess, you have ideas for some other enhancements which would support that uniqueness.

So, I was particularly distressed to read about your loss and likely departure because you're one of the few devs with a software engineering background (which I inferred from your reaction of distaste to some of the more yucky baggage that the sequential forks have introduced) and was really pleased to see the community and yourself sorting things out.

There are one or two other alts that are also heading in “primary support for soloing” direction, not that I can recall which ones; maybe I can recover that info from text search ... but anyway, they were planning to put in some effort to reconstitute the old “mining” tab page in the wallet, in an updated format with better UI. I presume Qt provides the basic capability of h/w config detection (number of cores, etc) and ofc the old wallets still carry the original implementation which can probably be looted of whatever code's still working and relevant.

There does seem to be a bit of a separation now between the novacoin/bottlecaps forks in which *generate has been removed from the RPC API and the peercoin forks which retain it - in that most of the recent PnDs seem to be non-soloable from the wallet, which I guess is in broad favour of the rig rental outfits and mineral pools because it's that extra step of d/loading the miner and running it that puts off the casual adopter.

If it wasn't you then it was another coin dev who expressed dissatisfaction with the slow miner built-in to the wallet and intended to replace it with the core of the much speedier standalone miner.

I like the idea for its novelty if nothing else and sounds like you may well have a point about decentralization. If you can make in-wallet soloing really easy-peasy, that'd be a big plus for adoption, I'd say.

Cheers

Graham