neuroMode
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November 05, 2014, 05:49:33 AM |
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7 blocks in a row? Not anymore, buddeh.
Groestl tried recently, only got 6. Lovin' it!
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neuroMode
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November 05, 2014, 06:21:38 AM |
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The Time-Warp Attack Revisited: Questions
A) When did it start happening and can we see this on an explorer?
B) It did not fork Myriadcoin yet time-warp attacks have forked other mono-PoW coins in the past. Do we have cited occasions for this?
C) Can someone do a write-up of how Myriadcoin successfully survived the time-warp attack and how our multi-PoW mechanism minimized the damage? I think this is a tremendous selling point.
D) Can time-warp attacks still be performed? If they can, can we prove on the blockchain when they may have occurred and point to specific changes in the source code that prevented it from doing as much damage as it did this past weekend?
E) Now that the difficulty-weighting adjustments, 6-block consecutive mining cap per algo, and the time-warp failsafes have been integrated, what kind of confidence should this give investors and devs in using/buying Myriadcoin? Is the blockchain woven better than Bitcoin's?
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rav3n_pl
Legendary
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Activity: 1361
Merit: 1003
Don`t panic! Organize!
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November 05, 2014, 11:07:20 AM |
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Looks like I finally manage to make ONE P2Pool code for all Myriad coins! I have to reset share chains because: - some algos are on old P2Pool code (old share chain data) - I changed EVERY chain data Major changes: - all PPLNS window is 12hrs in every algo - fast pool share reaction on miners come/leave (10-20 shares) - scrypt and sha algo have longer share time to work on almost all scrypt machines - rest of algos have 10s share time What is not changed: - P2P and miners ports I will try to run all pools on my machine tomorrow, but it need to run 5 instances of myriadcoind and 5 copies of data directory, not sure that my machine handle it Code: https://github.com/Rav3nPL/p2pool-myriadcoinBecause all chains have "persist" flag set to "true" 1st pool owners need to change it ofc I have checked on testnet SHA, qubit and skein for proper block - it works fine. But I not see how 2 others would not work
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jwinterm
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Activity: 3066
Merit: 1115
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November 05, 2014, 02:59:46 PM |
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No, seems legit. I haven't checked myself, but saw this conversation on IRC over the last hour: [07:56:11] <eightbitcoder> hi guys [08:06:22] <cosmo> howdy [08:43:04] <eightbitcoder> i plan on bringing out a new version soon that will further strengthen against attacks [08:46:16] <larraboj> how come so many more groestl blocks are being solved compared to the other algos [08:46:19] <larraboj> http://birdonwheels5.no-ip.org/blocks[08:46:45] <larraboj> its 6 groestl blocks, 1 sha/scrypt/qubit/skein and then 6 more groestl [08:47:40] <larraboj> http://myriad.theblockexplorer.com/temp.php[08:47:50] <eightbitcoder> larraboj: yes, that is one of our security measures kicking in. somebody is attempting to manipulate groestl again to get more blocks. [08:48:41] <larraboj> is it because the groestl hashrate is not high enough? [08:49:20] <eightbitcoder> groestl is the easiest target because it has the lowest hash. they are sending fake data in their groestl blocks to try and manipulate the groestl diff further down. [08:50:41] <eightbitcoder> when they previously tried this attack they managed to get got around 50 blocks a minute.. now around 4 a minute. i plan to tighten this security further. [08:54:51] --> Vit_ (b025640e@gateway/web/freenode/ip.176.37.100.14) has joined ##myriadcoin [08:58:53] <larraboj> I thought only being able to solve 6 blocks in a row would make the time warp attack more difficult So, hopefully we'll see another update in the next day or ten.
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8bitcoder (OP)
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November 05, 2014, 03:00:38 PM |
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Yes, the attacker is back. He is much less effective this time compared to last time, due to our improved counter measures. I plan to improve on these counter measures in a new release soon.
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depboy
Member
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Activity: 94
Merit: 10
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November 05, 2014, 03:06:36 PM |
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Yes, the attacker is back. He is much less effective this time compared to last time, due to our improved counter measures. I plan to improve on these counter measures in a new release soon. 4 blocks/minute is still a LOT of MYR to be getting away with. Hope you get the fix out soon!
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Arsenay
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November 05, 2014, 04:06:56 PM |
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ok
Debian 6 amd64 build:
./configure --enable-tests=no --with-miniupnpc make start myriadcoin-qt all good ))
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ocminer
Legendary
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Activity: 2660
Merit: 1240
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November 05, 2014, 04:15:55 PM |
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I've updated the Suprnova Pools to the new Release.
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suprnova pools - reliable mining pools - #suprnova on freenet https://www.suprnova.cc - FOLLOW us @ Twitter ! twitter.com/SuprnovaPools
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Arsenay
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November 05, 2014, 04:28:44 PM |
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lost some incoming transactions
messages come without coins
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ocminer
Legendary
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Activity: 2660
Merit: 1240
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November 05, 2014, 04:30:13 PM |
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There are currently quite a few forks on the network unfortunately...
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suprnova pools - reliable mining pools - #suprnova on freenet https://www.suprnova.cc - FOLLOW us @ Twitter ! twitter.com/SuprnovaPools
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Kraxer
Member
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Activity: 102
Merit: 10
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November 05, 2014, 04:35:38 PM |
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I don't know how I feel about sharing an about to explode currency with a cheating asshole who might dump everything at slightest price jump. Makes me uneasy.
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8bitcoder (OP)
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November 05, 2014, 04:38:48 PM |
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There are currently quite a few forks on the network unfortunately...
This should be the correct fork: myriadcoind getblockhash 752694 ae1ce01cc9a8765b9853b8ecf24179bedbc84f11b689538b1adee376ca4540b6
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antonio8
Legendary
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Activity: 1386
Merit: 1000
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November 05, 2014, 04:44:25 PM |
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There are currently quite a few forks on the network unfortunately...
Do we know what pools are on the correct forks and which algo is correct? OC, Is your mry-gro pool on correct fork?
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If you are going to leave your BTC on an exchange please send it to this address instead 1GH3ub3UUHbU5qDJW5u3E9jZ96ZEmzaXtG, I will at least use the money better than someone who steals it from the exchange. Thanks
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ocminer
Legendary
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Activity: 2660
Merit: 1240
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November 05, 2014, 04:46:49 PM |
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There are currently quite a few forks on the network unfortunately...
Do we know what pools are on the correct forks and which algo is correct? OC, Is your mry-gro pool on correct fork? Just checked and both pools are on the correct fork, myrgrs.suprnova.cc and myrq.suprnova.cc
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suprnova pools - reliable mining pools - #suprnova on freenet https://www.suprnova.cc - FOLLOW us @ Twitter ! twitter.com/SuprnovaPools
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antonio8
Legendary
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Activity: 1386
Merit: 1000
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November 05, 2014, 05:01:04 PM |
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There are currently quite a few forks on the network unfortunately...
Do we know what pools are on the correct forks and which algo is correct? OC, Is your mry-gro pool on correct fork? Just checked and both pools are on the correct fork, myrgrs.suprnova.cc and myrq.suprnova.cc OC, You the man.
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If you are going to leave your BTC on an exchange please send it to this address instead 1GH3ub3UUHbU5qDJW5u3E9jZ96ZEmzaXtG, I will at least use the money better than someone who steals it from the exchange. Thanks
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Arsenay
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November 05, 2014, 05:04:46 PM |
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There are currently quite a few forks on the network unfortunately...
Do we know what pools are on the correct forks and which algo is correct? OC, Is your mry-gro pool on correct fork? with today work here: http://myriad.p2pool.geek.nzfor Myr-Groestl lot happens stale holiday "low diff" in Groestl continues ))
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MaxDZ8
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November 05, 2014, 06:02:22 PM |
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for Myr-Groestl lot happens stale Plenty! I wonder how much hashrate we need to make the attacker lose its advantage. I might want to push to release my improved kernel but I don't think it would suffice.
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