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Showing 18 of 18 results by arekm
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Board Service Announcements (Altcoins)
Re: [ANN][EXCHANGE] Poloniex - Crypto Exchange with BTC/NXT
by
arekm
on 29/03/2014, 07:30:08 UTC

Probably brute force protection, since not every account has 2FA enabled. I can understand it, but I agree it is really annoying.

But it shows even for 2FA enabled accounts. Change that stupidity to require recaptcha OR 2FA at step 2.

But before logging in there is no way to know whether the account you are about to login with has 2FA enabled right?  Roll Eyes

That's why captcha is supposed to be done at step 2. Captcha OR 2FA.
Post
Topic
Board Service Announcements (Altcoins)
Re: [ANN][EXCHANGE] Poloniex - Crypto Exchange with BTC/NXT
by
arekm
on 27/03/2014, 11:39:39 UTC

Probably brute force protection, since not every account has 2FA enabled. I can understand it, but I agree it is really annoying.

But it shows even for 2FA enabled accounts. Change that stupidity to require recaptcha OR 2FA at step 2.
Post
Topic
Board Service Announcements (Altcoins)
Re: [ANN][EXCHANGE] Poloniex - Crypto Exchange with BTC/NXT
by
arekm
on 26/03/2014, 22:08:27 UTC
Why is there now recaptcha at every login? I understand, that at registration it can serve as sort of deterrent for spammers, etc ... but having to go through recaptcha (which tend quite often to be very unreadable and sometimes needs several attempts to solve) at every login is quite annoying.

Recaptcha AND 2FA if you have 2FA turned on. That's just plain stupid.
Post
Topic
Board Marketplace (Altcoins)
Re: [ANN] Fibonacci SCRYPT ASIC Litecoin LTC Miners - Datasheet Posted
by
arekm
on 20/03/2014, 08:55:01 UTC
That was only for the first 24 hours. That promotion passed already sorry.

Ouh.

Maybe you could try to accept CACHe just at slightly lower price than market price to promote CACHe? Few % would likely do the job.
Post
Topic
Board Marketplace (Altcoins)
Re: [ANN] Fibonacci SCRYPT ASIC Litecoin LTC Miners - Datasheet Posted
by
arekm
on 19/03/2014, 17:30:03 UTC
Seems legit and I'm going to try to collect enough BTC to buy a device.

Better buy CACH first (cheap now, https://poloniex.com/exchange/btc_cach) since seller accepts CACH at 1 CACH = 0.01 BTC rate. That means nice discount.
Post
Topic
Board Service Announcements (Altcoins)
Re: [ANN][EXCHANGE] Poloniex - Crypto Exchange with BTC/NXT
by
arekm
on 05/03/2014, 05:44:55 UTC
UNLESS YOU USE 2FA.

I'm sure you are aware that 2FA usage on poloniex is so unfriendly.

Just simple things like lack of focus in 2FA window, requires me to click into it when it appears.

Sessions die so quickly forcing another 2FA code.

No way to set an option that 2FA is remembered for IP being used (so 2FA would be required once per day per IP for login purposes and not everytime).


And finally "borrowing" 12% from people:
- was done in sucking way, existing buy orders were canceled instead of being reduced. No information about this on exchange itself, no mailing.
- if you "borrow" 12% from people then you should return more. "borrowing" costs. 20%/year or even a more since it was forced?
Post
Topic
Board Service Announcements (Altcoins)
Re: [ANN][EXCHANGE] Poloniex - Crypto Exchange with BTC/NXT
by
arekm
on 16/02/2014, 19:09:33 UTC
@busoni: how "current price" is calculated (the one shown in "markets")? It is not last transaction price I hope? Should be weighted arithmetic mean from some period I think.
Post
Topic
Board Announcements (Altcoins)
Re: [ANN][CACH] CACHeCoin released
by
arekm
on 02/02/2014, 23:39:20 UTC
If you want some mining stats from past (i.e. with hashrate of X, today I get A coins, yesterday B coins, day before C coins), I am afraid that won't be so easy (not sure if there are data in the pool database for accurate calculation of such statistics), but I can look at it and see how hard that would be and how accurate results would that yield.

Just:
today, mined coins (average/h; note calculating not by 24h but by passed hours/minutes of current day)
dateA, mined coins (average/h)
dateB, mined coins (average/h)
dateC, mined coins (average/h)

no hashrate needed. The data is there - transactions -> credit, just  need to be presented with per day aggregation.
Post
Topic
Board Announcements (Altcoins)
Re: [ANN][CACH] CACHeCoin released
by
arekm
on 02/02/2014, 14:20:35 UTC
now running again... sorry for any inconvenience caused.

Thanks. Could you add cach/h (or cach/day) mining stats somewhere, too?

For example for xpm there is something like http://beta.beeeeer.org/index.php?p=user&s=xpm&a=ALvVMKLtJHKJwikdQTaHJzn2Mkwbxp4TJH (stats of some random user) where you can nicely compare mining profits between days in last weeks/months.
Post
Topic
Board Announcements (Altcoins)
Re: [ANN][CACH] CACHeCoin released
by
arekm
on 01/02/2014, 16:19:05 UTC
I have lowered the fee in my pool from 1% to 0.5%:

http://cach.catcoin.cz/ - traditional pool, PROP, vardiff, stratum. A nice alternative to p2pool for mining CACH.

Great but why did you turn if off? ;-)

[2014-02-01 17:15:35] Stratum connection failed: Failed to connect to 2a01:430:17:1::ffff:109: Network is unreachable

and indeed
> telnet cach.catcoin.cz 3333
Trying 2a01:430:17:1::ffff:109.3333...
telnet: Unable to connect to remote host: Connection refused
Trying 37.205.9.209.3333...
telnet: Unable to connect to remote host: Connection refused

Died around 14:53 CET today.
Post
Topic
Board Altcoin Discussion
Re: [GIVEAWAY][CACH] Free Cachecoin Giveaway worth 2 BTC + Bonus Proof of Stake!
by
arekm
on 27/01/2014, 08:34:23 UTC
CHUy2CLeKtHnn6iZxMuUUWdnHxwmgJH8UT

Thanks
Post
Topic
Board Hardware
Re: Hacking a BFL Jalapeno to 32GH and beyond....(???)
by
arekm
on 11/01/2014, 20:55:04 UTC
It goes to the point when it will become easier to immerse entire jalapeno into (non-conductive obviously) coolant. Not sure what is used these days but... mineral oil works.
Post
Topic
Board Hardware
Re: Hacking a BFL Jalapeno to 20GH and beyond....
by
arekm
on 02/01/2014, 19:29:01 UTC
Remove the chip again, and check the resistance on the 3.3V rail. If it's below about 10 ohms or so, something is shorted and that's what keeps blowing the ST1S10.

Shorts on a main power rail like that are a huge PITA to debug. Depending on what you have available, there's a couple ways to find out what the issue is. The easiest way I know is to hook a lab supply at 3.3V up to 3.3V rail and turn the current limiting down. Grab an IR camera, and turn up the current until you see a hot spot. You can do the same with an IR thermometer, but it's more time consuming. A finger work too, but you need get the problem a lot hotter that way, and if it's something that's a QFN or one of the ASICs you might never notice it get hotter.

Freeze it with spray (or compressed air upside-down) and see where it becomes hot - is another method.
Post
Topic
Board Hardware
Re: Hacking a BFL Jalapeno to 20GH and beyond....
by
arekm
on 20/12/2013, 12:52:40 UTC
Yeah... "Does not ship to Poland" Sad
Post
Topic
Board CPU/GPU Bitcoin mining hardware
Re: Time to retrofit BFL Jalapenos with new types of chips....
by
arekm
on 19/12/2013, 22:35:10 UTC
You could always produce adapters - pure pcb in such case.
Post
Topic
Board Hardware
Re: Hacking a BFL Jalapeno to 20GH and beyond....
by
arekm
on 10/12/2013, 19:06:48 UTC
Any (EU or to EU) chips sellers available? Want to try adding 4 chips to  jaly (or fry them ;-)
Post
Topic
Board Beginners & Help
Re: Mining with standard laptop options
by
arekm
on 09/12/2013, 17:04:32 UTC
Don't even try to mine bitcoins on cpu. But you can look for some altcoin [primecoin is fine] that's designed to be cpu mined. Unfortunately single laptop doesn't have the power to earn much, especially if you pay for the electricity. Doing this for learning and fun works though Smiley
Post
Topic
Board Beginners & Help
Re: Newbie restrictions..
by
arekm
on 09/12/2013, 16:55:26 UTC
Me being another user with a need to post PM, so well, joining newbie hell/heaven.