[ANN] ¤ DMD Diamond 3.0 | Scarce ¤ Valuable ¤ Secure | PoS 3.0 | Masternodes 65%

[cryptonit]

IMPORTANT:
we need anyone have his DMD wallet in minting mode please
thx for ur support

[big_coins]

IMPORTANT:
we need anyone have his DMD wallet in minting mode please
thx for ur support

tell cryptsy they probably have largest wallet.

eta on mining fix ?

[pallas]

unfortunately there is a lot of people who need to take it out by badwording and offending on forums, because they can't in real life.

[Mister1k]

unfortunately there is a lot of people who need to take it out by badwording and offending on forums, because they can't in real life.

Yah some of us can speak English. unlike the DEV who cant spell

[tanakan]

Let's view PPC chart http://coinmarketcap.com/currencies/peercoin/
After they release new wallet in android.
I'm learning dev app in android, I'll free to join DMD wallet project .
We need to make something for DMD, to make it's more popular.

[pallas]

Let's view PPC chart http://coinmarketcap.com/currencies/peercoin/
After they release new wallet in android.
I'm learning dev app in android, I'll free to join DMD wallet project .
We need to make something for DMD, to make it's more popular.

I've already compiled the headless wallet on arm and it works on android. The interface is missing of course.
We discussed this recently (should it stake? full blockchain? fork bitcoin opensource android wallet? etc.).

[Reggie0]

unfortunately there is a lot of people who need to take it out by badwording and offending on forums, because they can't in real life.

Why do you fell offended .I'm not talking to you. There is some tissue paper in the washroom go wipe your eyes.
Its unfortunate you cant complete a sentence as well. Do you mix that shit up in your mouth and than spit it out.

It is a public forum. If you don't want comments then you have to send private messages.

[danbi]

Our pacing code is

        if(nActualSpacing < 0)
        {
            printf(">> %s nActualSpacing = %"PRI64d" corrected to 1.\n", fProofOfStake ? "PoS" : "PoW", nActualSpacing);
            nActualSpacing = 1;
        }
        else if(nActualSpacing > nTargetTimespan)
        {
            printf(">> %s nActualSpacing = %"PRI64d" corrected to nTargetTimespan (%"PRI64d").\n", fProofOfStake ? "PoS" : "PoW", nActualSpacing, nTargetTimespan);
            nActualSpacing = nTargetTimespan;
        }


This works well for PoS.

Do you think it would be better to use

if (nActualSpacing<0) nActualSpacing=nTargetSpacing

Yes.


    bnNew.SetCompact(pindexPrev->nBits);
    ....
    int64 nInterval = nTargetTimespan / nTargetSpacing;
    bnNew *= ((nInterval - 1) * nTargetSpacing + nActualSpacing + nActualSpacing);
    bnNew /= ((nInterval + 1) * nTargetSpacing);

The bnNew is set to the last block's nbits. Then its value multiplied by
((nInterval - 1) * nTargetSpacing + nActualSpacing + nActualSpacing)/((nInterval + 1) * nTargetSpacing)

If you set nActualSpacing to 1 then it will be multiplied by
((nInterval - 1) * nTargetSpacing + 2)/((nInterval + 1) * nTargetSpacing)=
(nInterval - 1)/(nInterval + 1) + 2/((nInterval + 1) * nTargetSpacing) =
((nTargetTimespan-nTargetSpacing) / (nTargetTimespan+nTargetSpacing)) + 2/((nTargetTimespan + nTargetSpacing) =
((nTargetTimespan-nTargetSpacing+2) / (nTargetTimespan+nTargetSpacing)) =
(1802-nTargetSpacing)/(1800+nTargetSpacing)
If nTargetSpacing>1 then it is smaller than 1 so you will decrease the target and increase the diff. It gives an exploitable bug: If you generates negative time hopping then you can artifically increase the diff and slow down the blockchain.
If it is a PoS block then nTargetSpacing=600 and the multiplier is (1802-600)/(1800+600)=0.5 approx. Now there are only PoS blocks, so every negative time hopping block will double the diff.

If you set nActualSpacing=nTargetSpacing, then:
((nInterval - 1) * nTargetSpacing + nActualSpacing + nActualSpacing)/((nInterval + 1) * nTargetSpacing) =
((nInterval - 1) * nTargetSpacing + nTargetSpacing + nTargetSpacing )/((nInterval + 1) * nTargetSpacing) =
((nInterval + 1) * nTargetSpacing )/((nInterval + 1) * nTargetSpacing) = 1

So if there are a negative time hopping attack the target and diff will not change, so there will be no advantage of this kind of attack.

Your analisys is good and indeed it seems the better way to address the problem. Is there no problem for nActualSpacing > nTargetTimespan?

Doing some more tests, it seems that once we let this "negative" number in, it keeps staying negative. I am experimenting now with adding the same "make positive" code for bnNew as well. Do you see any problems with this?

Also, while we are at this stage that requires forking, do you have any other code improvement suggestions?

[he-man]

trying to install the wallet : error loading blkindex.dat  . known problem?

[pallas]

trying to install the wallet : error loading blkindex.dat  . known problem?

https://bitcointalk.org/index.php?topic=580725.msg8133065;topicseen#msg8133065

[he-man]

trying to install the wallet : error loading blkindex.dat  . known problem?

https://bitcointalk.org/index.php?topic=580725.msg8133065;topicseen#msg8133065

thx mate

[cryptonit]

new competition
in last open irc chat of noblecoin
how often u read DMD:

7

send me your DMD wallet u won 7 DMD!

[tanakan]

I have some question for Cryptonit:
- Why my minted DMD (over 200 confirm, over 7 days) is not existed in Coin Control list?
- After DMD coin is minted, when is it ready for staking (7 days or never)?

[pallas]

two weird things:

- my wallet did not mint a single block for 6 days (usually it was 1/2 a day)
- cpu usage is much lower recently

may it has to do with the blockchain problem? is there a way to check if it's minting, other than "unlocked_until"?

[danbi]

two weird things:

- my wallet did not mint a single block for 6 days (usually it was 1/2 a day)
- cpu usage is much lower recently

may it has to do with the blockchain problem? is there a way to check if it's minting, other than "unlocked_until"?

You could check via the 'getmininginfo'. If stakepower is not zero, you are minting.

The PoS difficulty has increased recently, as there is no PoW and more PoS is minted.

The CPU usage is much lower, because due to variety of reasons we still 'double hash' received blocks and you are receiving blocks at larger intervals now. The extra hashing is being removed so this useless CPU usage will decrease with time.

[cryptonit]

we want in this POW less time secure network with maximum stake amount
and did ask everyone to open wallet in mint mode

u doing a great job DMD community!

its clear so many wallets in stake mode means that POS difficulty is raising
and even if amount of stake blocks is the same as before each single user have the feeling he mint less frequent

[cryptonit]

I have some question for Cryptonit:
- Why my minted DMD (over 200 confirm, over 7 days) is not existed in Coin Control list?
- After DMD coin is minted, when is it ready for staking (7 days or never)?

hi tanakan

how u identify the minted DMD in coin control?

the amount u see in the transaction overview isnt the size of the coin pile

depending if its a split stake or single stake or a group stake different things can happen

in any case the amount of POS-reward wont be visible as a own pile instead added to the stake that earned it

most easy to explain case is a single stake with lets say a pile of 1000 DMD and a age of 60 days
when he mint u see something like 80 DMD as pos reward
but u wont see a 80 DMD coin pile
instead once the stake did return to balance u see a 1080 DMD coin pile

now lets look what happens if u have a split stake (stake with coin age between 7 and 30 days)

if u have a 1000 DMD coin pile which was able to split stake at a age of 20 days following would happen
when he mint u see something like 27 DMD as pos reward
but u wont see this 27 DMD coin pile
instead once the stake did return to balance u see a 527 DMD and a 500 DMD coin pile
(split stake mean coin pile is split in 2 pile and pos reward added to the first one)

more details about POS u can read at:

http://bit.diamonds/community/index.php/topic,46.msg376.html#msg376

[pokeytex]

we want in this POW less time secure network with maximum stake amount
and did ask everyone to open wallet in mint mode

u doing a great job DMD community!

its clear so many wallets in stake mode means that POS difficulty is raising
and even if amount of stake blocks is the same as before each single user have the feeling he mint less frequent

Just fyi - I am minting about 8-10 times per day - so all is working on my end - USA east coast.

[big_coins]

get mining back on asap before this is a dead coin

[cryptonit]

update:

danbi is doing a great job to use this chance to improve code
its not often a dev get a free hardfork maintenance window
so additional to the fix we wana use it to our advantage
and add other code updates as well

the additional day we invest into new wallet is sure worth the time