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Author Topic: [Ultracoin] [Est. Feb 2014] ~ ASIC Resistant & Ultrafast 6 Second Transactions!  (Read 353201 times)
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usukan
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October 27, 2016, 08:21:56 PM
 #3921

it sounds good! only one thing to be clear, where is all the hashing power coming from? Is it legit or is there still a glitch in the wallet?



https://bitcointalk.org/index.php?topic=727023.msg16670817#msg16670817

Its just a glitch with the pool stats caused by the way a QT wallets estimates hash (that hash does not exist) - most hash on UTC is on the pool - sometime a few solo miners.

The wallets ESTIMATE hash - the calculation is not correct when there are wild diff swings like we have with the old wallet diff retargeting which stays in place until we get past the fork.

When the network is stable in terms of diff and time between blocks - you might expect the estimation to be more accurate.

Thats not to say we might expect some extra hash in the future.



                                                   
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October 27, 2016, 09:19:48 PM
 #3922

Hey there,

I've got some UTC. Do you know some casinos that accept ultracoin?

Cheers
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October 28, 2016, 12:25:58 AM
 #3923

Hey there,

I've got some UTC. Do you know some casinos that accept ultracoin?

Cheers

Yes of course - BITTREX



                                                   
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bret
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October 28, 2016, 03:23:08 AM
 #3924

Hey there,

I've got some UTC. Do you know some casinos that accept ultracoin?

Cheers

Yes of course - BITTREX



A lot of people gambled with their UTC over at Cryptsy.. but it's gone now :/
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October 28, 2016, 03:28:31 AM
 #3925

Hey there,

I've got some UTC. Do you know some casinos that accept ultracoin?

Cheers

Yes of course - BITTREX



A lot of people gambled with their UTC over at Cryptsy.. but it's gone now :/


haha - yes I was going to mention Cryptsy but didn't want to offend anyone (including myself)  Sad


                                                   
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October 28, 2016, 03:32:23 AM
 #3926

UTC was so promising, but cryptsy ruined utc, damn big vern big scammer.  Angry
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October 28, 2016, 12:59:46 PM
 #3927

Hii Guys.
Im glad that is this tread still alive. Was not on for long time.
I download new wallet, but i have problem to synch.
No connection.
Can you post some NODE so i can add to conf file?
Thank you.

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October 28, 2016, 02:45:17 PM
 #3928

Hii Guys.
Im glad that is this tread still alive. Was not on for long time.
I download new wallet, but i have problem to synch.
No connection.
Can you post some NODE so i can add to conf file?
Thank you.


Find some nodes here
https://bitcointalk.org/index.php?topic=727023.msg16616557#msg16616557

@usukan maybe these should be added to OP.

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October 28, 2016, 09:19:41 PM
 #3929

Hii Guys.
Im glad that is this tread still alive. Was not on for long time.
I download new wallet, but i have problem to synch.
No connection.
Can you post some NODE so i can add to conf file?
Thank you.


Find some nodes here
https://bitcointalk.org/index.php?topic=727023.msg16616557#msg16616557

@usukan maybe these should be added to OP.



Hi sambiohazard

Please note that the new wallet will get peers/node seeds directly from PressTabs server when we get past the fork block - so theoretically you should not need a .conf file.  

I believed the seed function was working before the fork but maybe not since some are having trouble.  Its interesting that I can delete my .conf file and after a short wait (1min approx) my wallets still start to add peers to achieve normally 3-5 but often up to 8 peers.

In the meantime - for anyone having trouble finding nodes - this is my most up to date list (just updated today) to add to your .conf file


addnode=71.113.173.55:44100
addnode=77.110.148.169:44100
addnode=87.98.166.129:58128
addnode=105.225.248.12:59165
addnode=92.37.52.165:49459
addnode=118.90.124.27:52410
addnode=41.50.96.101:50338
addnode=109.97.52.141:50375
addnode=86.127.60.252:44100
addnode=74.118.192.18:44100
addnode=41.50.96.101:44100
addnode=78.90.154.233:2445
addnode=92.37.52.165:64206
addnode=2.122.0.94:44100
addnode=216.19.181.63:45499
addnode=85.23.68.122:54907
addnode=197.245.94.219:63347
addnode=217.21.17.8:44100
addnode=74.111.112.108:44100
addnode=74.118.192.18:44100
addnode=118.92.180.191:44100
addnode=176.107.17.17:44100
addnode=68.196.212.19:44100

Steven is updating the ANN - so he can add these to it when he's free.

The network is still being swamped by multiple transactions with 1000's of inputs (we have no idea why from 9th Oct these transactions started and continue to impede the UTC network - and this is causing problems with the pool, slow blocks, node restarts, wallets, syncs and memory.  Until we get past the fork block - or the individual sending the transactions backs off for a while - we will continue to have network issues.

Again - I ask - if you are the one sending these 10-100 UTC input transactions with over 400 inputs in each transaction - and multiple transactions in each block - PLEASE STOP until we get past the fork block.  You are crippling the network at present.

Here is an example of just one transaction in the last block - there are many many transactions like this since the 9th of October - which correlates exactly with when the network began to have issues.
http://www.presstab.pw/phpexplorer/UTC/tx.php?tx=6203ad8b5c5ef9eac5c252ea67014f995e9fe04bb5eb67856c8388c9bce31479

454 inputs to send just 5,000 UTC - and multiple transactions just like this in the current block 1812758 (and previous blocks) - its hard to even track because the getdata requests are crashing Presstabs block explorer.

If they stop - we can get to the fork in a few days.  Otherwise nodes servers and wallets are all overloaded - and our block progress towards the fork is painfully slow.


Cheers - usukan







                                                   
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October 28, 2016, 09:37:17 PM
 #3930

That transaction leads to this address: http://www.presstab.pw/phpexplorer/UTC/address.php?address=UXZCMmmsTjvW6bxsbbrL9vVaQmNHuWt56s

which has over 10 million (over 30% of total supply) of UTC.

If the numbers are right (hopefully not) that address is most likely an exchange or a pool. But I couldn't tie it to any of them (didn't spend much time on it though).

RIP Bittrex
RIP Poloniex
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October 28, 2016, 09:56:57 PM
 #3931

That transaction leads to this address: http://www.presstab.pw/phpexplorer/UTC/address.php?address=UXZCMmmsTjvW6bxsbbrL9vVaQmNHuWt56s

which has over 10 million (over 30% of total supply) of UTC.

If the numbers are right (hopefully not) that address is most likely an exchange or a pool. But I couldn't tie it to any of them (didn't spend much time on it though).

Hi bathrobehero - yes we spotted the ample size of the receiving wallet and are trying to confirm with Bittrex if its their new cold wallet which they started up on 9th Oct.

I have also sent some UTC into BITTREX - and will track its path when we crack the next few blocks.

(Just a side thought - I hope its not whoever has control of all the ex Cryptsy UTC wallets?)

Cheers - usukan


                                                   
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October 31, 2016, 01:14:55 AM
 #3932

I moved my miners away to zcash for the time being but I did try to break the current freeze earlier today for a couple of hours but it didn't happen.

But here's the thing. A block should have been found 91 times by now with the current difficulty as per the pool's stats but that didn't happen. Similar unlucky streaks happened a lot in the recent past.

At first I thought it was an issue with the pool but I solomined for about two hours but haven't find any blocks while I should have found blocks roughly about every 4 minutes based on the difficulty.

That's either some crazy variance or something's up - that I've never seen before.

RIP Bittrex
RIP Poloniex
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October 31, 2016, 08:05:41 AM
 #3933

I moved my miners away to zcash for the time being but I did try to break the current freeze earlier today for a couple of hours but it didn't happen.

But here's the thing. A block should have been found 91 times by now with the current difficulty as per the pool's stats but that didn't happen. Similar unlucky streaks happened a lot in the recent past.

At first I thought it was an issue with the pool but I solomined for about two hours but haven't find any blocks while I should have found blocks roughly about every 4 minutes based on the difficulty.

That's either some crazy variance or something's up - that I've never seen before.


Hi bathrobehero - yes the network is being spammed (either unintentional or not) with transactions with ridiculous amounts of inputs.  The mempool is a beast with many horns.

We are looking into a fix as I have mentioned in my PM to you just now.

Cheers - usukan


                                                   
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bret
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October 31, 2016, 10:35:42 PM
 #3934

I moved my miners away to zcash for the time being but I did try to break the current freeze earlier today for a couple of hours but it didn't happen.

But here's the thing. A block should have been found 91 times by now with the current difficulty as per the pool's stats but that didn't happen. Similar unlucky streaks happened a lot in the recent past.

At first I thought it was an issue with the pool but I solomined for about two hours but haven't find any blocks while I should have found blocks roughly about every 4 minutes based on the difficulty.

That's either some crazy variance or something's up - that I've never seen before.


Hi bathrobehero - yes the network is being spammed (either unintentional or not) with transactions with ridiculous amounts of inputs.  The mempool is a beast with many horns.

We are looking into a fix as I have mentioned in my PM to you just now.

Cheers - usukan


Would more hashing power help us?
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November 01, 2016, 01:47:40 AM
 #3935

I moved my miners away to zcash for the time being but I did try to break the current freeze earlier today for a couple of hours but it didn't happen.

But here's the thing. A block should have been found 91 times by now with the current difficulty as per the pool's stats but that didn't happen. Similar unlucky streaks happened a lot in the recent past.

At first I thought it was an issue with the pool but I solomined for about two hours but haven't find any blocks while I should have found blocks roughly about every 4 minutes based on the difficulty.

That's either some crazy variance or something's up - that I've never seen before.


Hi bathrobehero - yes the network is being spammed (either unintentional or not) with transactions with ridiculous amounts of inputs.  The mempool is a beast with many horns.

We are looking into a fix as I have mentioned in my PM to you just now.

Cheers - usukan


Would more hashing power help us?


The short answer is no. Its not about hash power.

bathrobehero has tried this yesterday with no success.  It more about the pool and presstabs nodes/servers being spared from load of the excess spam transaction inputs and the associated data processing which is compromising the network.

Alenevaa is looking into potential fixes and applying them.

Cheers - usukan


                                                   
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November 01, 2016, 06:19:11 AM
 #3936

Nice to see that this coin is not forgotten. Has to be one of my all time favorites. I am sure better days will come for UTC, sooner or later.
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November 01, 2016, 07:04:43 PM
 #3937

I moved my miners away to zcash for the time being but I did try to break the current freeze earlier today for a couple of hours but it didn't happen.

But here's the thing. A block should have been found 91 times by now with the current difficulty as per the pool's stats but that didn't happen. Similar unlucky streaks happened a lot in the recent past.

At first I thought it was an issue with the pool but I solomined for about two hours but haven't find any blocks while I should have found blocks roughly about every 4 minutes based on the difficulty.

That's either some crazy variance or something's up - that I've never seen before.


Hi bathrobehero - yes the network is being spammed (either unintentional or not) with transactions with ridiculous amounts of inputs.  The mempool is a beast with many horns.

We are looking into a fix as I have mentioned in my PM to you just now.

Cheers - usukan


Would more hashing power help us?


The short answer is no. Its not about hash power.

bathrobehero has tried this yesterday with no success.  It more about the pool and presstabs nodes/servers being spared from load of the excess spam transaction inputs and the associated data processing which is compromising the network.

Alenevaa is looking into potential fixes and applying them.

Cheers - usukan

Isn't this a pretty serious vulnerability? A small group could cripple the network indefinitely. What are other devs doing to deal with something like this?
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November 01, 2016, 07:30:25 PM
 #3938

Isn't this a pretty serious vulnerability? A small group could cripple the network indefinitely. What are other devs doing to deal with something like this?

The traditional approach would be to raise the transaction fee to a level that spamming becomes expensive.

presstab's Block Explorer Service | available for most coins! | Richlist w/ Address Claim | Market Cap Charts | Stake Weight Tracking | PoS % Rate Tracking
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November 01, 2016, 08:25:41 PM
 #3939

Seeking for some help over here Sad

Trying to start mining with 7950 x 2 GPUs. Downloaded Yacminer from OP. After launching it with simple bat file like: cgminer -o pool -u -p, results in:

Error -4: Enqueueing kernel onto command queue. (clEnqueueNDRangeKernel)

error. Tried applying nf min max and time and other parameters. Windows 7, catalyst 15.12. Other scrypt base coins mine well. Authorizing at pool fine.
What is the problem ?

Btw - very curious on what hash rate 7950 gives with OC or w/o. Thanks
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November 01, 2016, 09:03:59 PM
 #3940

I moved my miners away to zcash for the time being but I did try to break the current freeze earlier today for a couple of hours but it didn't happen.

But here's the thing. A block should have been found 91 times by now with the current difficulty as per the pool's stats but that didn't happen. Similar unlucky streaks happened a lot in the recent past.

At first I thought it was an issue with the pool but I solomined for about two hours but haven't find any blocks while I should have found blocks roughly about every 4 minutes based on the difficulty.

That's either some crazy variance or something's up - that I've never seen before.


Hi bathrobehero - yes the network is being spammed (either unintentional or not) with transactions with ridiculous amounts of inputs.  The mempool is a beast with many horns.

We are looking into a fix as I have mentioned in my PM to you just now.

Cheers - usukan







Would more hashing power help us?


The short answer is no. Its not about hash power.

bathrobehero has tried this yesterday with no success.  It more about the pool and presstabs nodes/servers being spared from load of the excess spam transaction inputs and the associated data processing which is compromising the network.

Alenevaa is looking into potential fixes and applying them.

Cheers - usukan

Isn't this a pretty serious vulnerability? A small group could cripple the network indefinitely. What are other devs doing to deal with something like this?




Hi bret

Not sure if you have noticed - but the network is up and running again.  The spam transactions are still coming in but are being handled for now. There have been a number of tweaks made in the network to get us to the fork while we are still at the mercy of the old wallet and its shortcomings.

Its important to note that once we get past the fork - its likely that the spam transactions that we are having now will not cause a problem because the block times will be regular/shorter because of efficient diff retargeting in the new wallet.  The old wallet with massive diff swings and long blocks in high diff periods has exposed us to this vulnerability.  Thats why we got PressTab to engineer a new wallet for us. The rules of the new wallet won't come ito play until after the fork.

There are many vulnerabilities in every crypto - bitcoin can easily be spammed and often is to the point that the mempool grows, transactions are not included for very long periods and fees go up.  Ethereum has been attacked for nearly 2 months now, multiple clients have been near impossible to sync and the network under serious stress at times - these guys have some of the brightest devs and lots of them - still took a long time to sort and will require 2 or more hardforks. Ultracoin is no different.  There will always be a new challenge.

I'm not a dev - so in laymans language I will try to explain things.  First - if you know what the problem is - there is always a fix.

It took us a few days to actually work out what the problem was here with UTC.  UTC has been running for years and nothing like this had ever occurred before in my experience. Why all of a sudden from the 9th of October did someone start to send spammy transactions with 1000's of inputs in each block?  These are all going to the largest UTC wallet that holds approx 25% of all UTC.  So its unlikely this guy is trying to crash the network and destroy his value.  

So - there is pretty much a fix for anything we are presented with.  Our approach in this particular situation is to apply softer fixes to get us past the fork point.  If that does not work - we will need to apply deeper fixes. Deeper fixes could include issuing a new wallet with a sooner fork block and some other adjustments - or playing around with data limits in blocks via the wallet - and of course as PressTab mentions increasing fees.  Problem is that fees won't really worry the guy currently sending the transactions.  Almost every fix for this particular issue has drawbacks - since the new wallet is set up according to standard and accepted limits on block data size and has reasonable fees.  If we play with these - there are negatives to consider.

Take for instance if we alter the wallet/pool to allow smaller data in blocks. This would likely fix the current problem - but it may not be the best solution for the long term.  This would apply to both POS and POW.  This means that under normal operation less transactions/inputs can flow. This is not desirable because we want the wallet to handle short peaks of high load. It seems that the old wallet only gets us into trouble when the input load is high and sustained - during high diff/longer block times. So we would not be keen to issue a new wallet with lower maxdata limits for the long term use of UTC as this would compromise the max transaction rates. Considering that after the fork the new wallet will likely handle the current heavy load - we would be not keen to apply this fix for the short term unless we exhaust all other avenues. We would then likely have to fork back and we would annoy the hell out of BITTREX changing wallets all the time.  Annoying BITTREX is not to be taken lightly.

You can see now that the network is running all A OK right now with short block times.  Transactions to the address receiving the multiple input transactions that were causing us trouble before are still continuing.  I might add that these transactions have reduced inputs from over 400 to 100-200 (thanks if you have changed this Mr UXZCMmmsTjvW6bxsbbrL9vVaQmNHuWt56s) - and the most important thing is that short block times have reduced transactions to only a couple by both POW and POS.

In summary - the sooner we can get to the fork and the new wallet rules come into play the better.  In the meantime we will continue to tweak things under the old wallet environment to get to the fork and only escalate to deeper changes if its plainly obvious its absolutely required.

Please note - you can expect further network disruptions until the fork block (if there are no changes in the frequency and nature of the spammy transactions) but we will endeavour to keep things moving as best we can.


Cheers - usukan


                                                   
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