Topic: [ANN][MOON] Mooncoin: You know where it's headed! KGW exploit FIXED 4/3/2014 - page 51. (Read 1106913 times)

Hhmm. A "master-node" seems to be a possible single point of failure. OK, the fallback to another node to become a master-node and possible fallback to the "simple-mode" (without ACP at all in case the backup-node also fails), could help. But how is that handled automatically by the network? Can it be handled automatically at all?

What about to place checkpoints into the blockchain of other coins by working together with them? Would that be possible?
Maybe that would be a cool idea. That way the different coins can "control" each other, making it very difficult to attack a single coin that is part of the whole network of "collaborating" coins.

Dear players of Dragon Knight,

The following changes has been made to the game.

1. Fixed Training Camp while exploring
2. Ability to build villages on world map
3. Ability to upgrade buildings and produce resources in new villages
4. Introduce 5 new village specific troops
5. Ability to gain experience by attacking and defeating villages on the map
6. Changed the template for menu and side bars
7. Moved scrolling stat bar to the bottom of the page
8. Your username in top right nav bar is now the link to your profile and is color coded by your VIP/ULT status
9. Edit Profile has been moved to beside your name in top right nav bar
10. Removed CCB and added HTML5

It is only safe to have a single checkpoint master node due to the consistency requirement for the checkpoints.
The handover from one checkpoint master node to another is a delicate process. Two different forks could receive a checkpoint if one is not careful. If such an inconsistency is detected ACP puts the whole network in safe mode.

Generally the master node has to be reliable and well protected. Even in the case of a failure of the master node another node can be configured to take over the job. The network still works normally even without receiving new checkpoints.

That's good information. Thanks, Titan.

So the best would be to have some (master) nodes that are picked randomly to set the checkpoint every few minutes/blocks, if you use ACP? Is that possible, too?

Hello Mooncoin!

There are a couple comments in place regarding ACP.

1) First of all ACP originates form Peercoin, the original proof of stake (POS) coin.
Thus every POS coin has ACP built in! Not every POS coin has the master node set up.

2) Feathercoin ported the ACP code from Peercoin to work with POW after the network suffered a severe attack.
Shortly thereafter I integrated the ACP code into the Luckycoin wallet with permission form Sunnyking.
The system is now working for nearly 2 years without failure.
While the Luckycoin certainly got its fair share of sometimes quite sophisticated attacks.

3) The Bitcoin 0.9.x wallet code completely broke the ACP internals due to a redesign of the internal block chain handling code.
That's the reason why Feathercoin hasn't updated their wallet.

4) The new ACP code is now a complete redesign to work with the Bitcoin 0.9.x series code base.
It took quite some time to figure everything out.

5) ACP features:
Accepting checkpoints is optional.
Every wallet can opt out from the checkpointing system.
ACP is driven by a single master node that decides on the checkpoints.
Every wallet is capable of being a master node with the right key.
It is a centralized authority that locks down the block chain.
In the same way are the hard checkpoints in the wallet issued by the developer centralized.
ACP blocks many types of attacks due to the fact that the block chain cannot be rewritten beyond a few blocks back.
Typically the checkpoint window is only a few minutes, after that no transaction can be changed.
With only hard checkpoints the whole block chain history back to the last hard checkpoint can be rewritten with enough hash power.

Food for thought.

Titan

1) I have already done an experimental Gitian Mooncoin build during the security audit some weeks back.
Some things in the source code have to be cleaned up a bit, strings renamed, etc. to make it ready for prime time.
The Gitian builds can be signed by multiple developers to make sure the binaries are ok and no one is sneaking any malicious code into the wallet. The Gitian build system setup tends to be a bit complicated, so it is not much used in the altcoin community.
I have to review the source code again to be able to set some dates for a release.

2) I'll discuss ACP in a reply below to keep the topics separated.
 
Titan

Total used addresses:    655248
Total funded addresses:    44411
Total empty addresses:    610837

wow big wall at 50 litoshi 

Hahah, me too. Volume is drying a lot.
Only sellers at ask

Andrea you know how much are in longterm hands?

i only buy!

Buy on cryptsy and Sell in the street  

@MooncoinItalia: Buy the #future! Make friends millionaire ! MoonCoin  ! https://t.co/4pKNhYlAyR #altcoin #cryptocurency #educacion #payments #smartcities

http://dc-charts.com/chart_moon.php?ex=2&cu=4&sw=4&tz=6&ar=0&dl=0&sc=0&js=1&re=0

Manual regression testing. I liked it.

Announcement:
72 Hrs Mooncoin sell moratorium

In order to defend PoW nature of Mooncoin, to support price and to attract miners, we declare Mooncoin 72 Hrs sell moratorium.
From Thursday, 21 May 18:00 GMT till Sunday, 24 May 18:00 GMT
If you want to support Mooncoin, and test yourselves, please cancel your Mooncoin sell orders and refrain from selling Mooncoin at all during this period.

SgtMoth, thank you for your faith.
You probably know that Mooncoin is not P&D coin at all, price is really volatile sometimes though.
jaipagare, thank your for your coming back and good feedback on sell moratorium.
redjedievolution, thank you for your support.

Thank you all for feedbacks and for cancelling sell orders.

Taking off sell orders is not price manipulating.
Sometimes when there is a stock market crisis, government officially asks people not to sell their shares. Banks, they ask not to cancel deposits sometimes.

Moon now is still very underestimated, not in theory, but in fact, as its capitalization used to be higher than 4 mln USD (with supply 24 bln MOON only then) https://web.archive.org/web/20140125114041/http://coinmarketcap.com/
Current market cap is about $150,000.  

So even better would be to set sell moratorium till market cap is $4 mln again. I think we all would be surprised at how fast price could grow if people just didn't sell soon after they had bought and had seen 10-15% profit. But it's impossible because people fear and want quick money even if this money is just few dollars.
I think even 72 hour sell moratorium not all people would withstand, as an experiment, that's interesting, even just to test yourself.

Sells removed, and placed higher buy orders jijiji

.

This reminds me, I only buy never sell.

I have yet to sell a single coin that I have mined.

If we all remove our sell orders till Sunday to help price growing to return miners, will it be considered a price manipulation?
If not, would you want to make this experiment?
72 hours sell moratorium?
If you support it, or just believe it's a good idea, post "+1", if you don't support it, post "-1".