Learn about the best Bitcoin mining software

An analysis on Penguin Magic user reviews

Hello,
To practise some programming, I made an analysis of the user reviews left on penguin magic. I thought you could be interested in some of the results. It made me check a lot of products that I did not know about.
I excluded the reviews for expos and gift cards to analyse only physical items and tricks. I investigated only the items with at least one review. I combined items as Penguin did. This left me with 87761 reviews for 11318 items.
50 Most Reviewed Items
Item Rating Review Count
Born to Perform Card Magic by Oz Pearlman 4.87 556
Invisible Deck 4.70 506
Self Tying Shoelace by Jay Noblezada 4.74 373
Melt 2.0 by Matthew Johnson 4.65 348
Marked Cards 4.67 344
The Stealth Pen presented by Rick Lax 4.73 327
Coffee Break by Gregory Wilson David Gripenwaldt 4.65 320
Torched and Restored by Brent Braun 4.83 252
All Seeing Eye by Dan Harlan 4.75 244
The Poker Test 2.0 by Erik Casey 4.44 236
Binary Code by Rick Lax 4.78 236
The End by Rick Lax 4.64 225
Starcle by Dan Harlan 4.85 220
OneTrix by Mario Lopez 4.50 214
Close-Up Illusion by Larry Jennings presented by Michael Ammar 4.70 206
Hummes Whirling Card 4.36 195
Two Dollar Window by Jay Noblezada 4.80 191
GREED Starring Daniel Garcia 4.54 190
Modern Transportation by David Regal 4.88 187
Vuja De by Rick Lax 4.78 181
DRESSCODE by Calen Morelli 4.75 181
Predixion by Max Maven 4.89 178
Color Monte 4.87 173
The Secrets of Magic by Rick Lax 4.67 173
In the Beginning There Were Coins Starring Jay Noblezada 4.76 170
Panic by Aaron Fisher 4.77 168
Or Not by Dani DaOrtiz 4.74 165
Bicycle Elite Edition Playing Cards 4.72 165
Super Soft Deluxe Nest of Wallets 2.0 by Nick Einhorn and Alan Wong 4.66 162
Tornado by Justin Flom and Rick Lax 4.82 161
BWave DELUXE by Max Maven 4.84 160
Bently by Chris Hanowell 3.60 159
Binary Code 2 by Rick Lax 4.88 159
Copycat by David Parr 4.88 157
BITCOIN by Rick Lax 4.57 157
Muldoon Match by Paul Gordon 4.77 156
ID7 by Rick Lax 4.37 155
Monkey in the Middle by Bill Goldman presented by Magick Balay 4.76 154
Little Door by Roddy McGhie 4.61 153
SPONGE Starring Jay Noblezada 4.80 152
Eclipse by Dave Loosley 4.60 152
Peter Turner LIVE 4.52 152
Position Impossible by Brent Braun 4.83 150
Clutch by Oz Pearlman 4.67 144
Zoltar by Shaun Dunn presented by Lewis Le Val 4.38 144
BANDIT by Darryl Davis & Daryl Williams (a.k.a. The Other Brothers) 4.80 144
The Known by Thom Peterson 4.47 143
The Ultimate Three Domino Monte 4.14 143
Psypher PRO by Robert Smith 4.73 142
Mnemonica Trainer by Rick Lax 4.81 141
25 5 Star (5*) Items
There are a lot of (3245 to be precise) items that received only perfect 5* reviews. But of course, that could be only one reviewer giving 5* and that would not mean a lot. The following table shows most reviewed yet still rated 5* items.
Item Rating Review Count
Diamond Jim Tyler LIVE 5.00 73
Carisa Hendrix LIVE ACTS 5.00 52
David Corsaro LIVE 5.00 30
Halloween by Natalia Silva 5.00 29
Howard Hamburg LIVE 5.00 25
Daniel Chard LIVE ACT 5.00 22
Sibyl by Phedon Bilek 5.00 21
Ian Rowland LIVE ACT 5.00 16
John (Fast Jack) Farrell LIVE 5.00 16
Morgan and West LIVE 5.00 16
Red Pill by Chris Ramsay 5.00 16
Jay Noblezada presents HTG LIVE: Hypnosis Training Group 5.00 16
NX11 :: The Noblezada Experience 5.00 16
QA Masterclass by Bob Cassidy 5.00 16
Takamiz Usui LIVE 5.00 15
Venom Cube by Henry Harrius 5.00 15
Move Zero (Vol 1) by John Bannon and Big Blind Media 5.00 15
Tom Wright LIVE 5.00 15
TC Tahoe LIVE 5.00 15
Jonathan Pendragon LIVE 5.00 15
Jan Forster LIVE ACT 5.00 14
13 Steps To Mentalism (6 DVDs) by Richard Osterlind 5.00 14
Jermays Mind (DVD Set) by Luke Jermay 5.00 14
Phoenix Deck 5.00 14
Tarbell 77: X-Ray Eyes and Blindfold Effects 5.00 14
50 Top Rated Items
I'll list the top-rated items. I'll include only the items that have at least 20 reviews. (This leaves us with 995 items to order).
Item Rating Review Count
Diamond Jim Tyler LIVE 5.00 73
Carisa Hendrix LIVE ACTS 5.00 52
David Corsaro LIVE 5.00 30
Halloween by Natalia Silva 5.00 29
Howard Hamburg LIVE 5.00 25
Daniel Chard LIVE ACT 5.00 22
Sibyl by Phedon Bilek 5.00 21
Diamond Jim Tyler LIVE 2 4.98 56
David Williamson LIVE 4.98 109
Drew Backenstoss LIVE ACT 4.98 83
Jay Scott Berry LIVE 4.97 37
David Hira LIVE 4.97 67
Toibox Card To Box System by Jonathan Kamm 4.97 133
Jason England LIVE 4.97 33
Dyno by Joe Rindfleisch 4.96 27
Paul Gordon LIVE 4.96 27
Roberto Giobbi LIVE 4.96 25
SvenPad® Minis Black Cover Pair 4.96 24
Mark Mason LIVE 4.96 23
Marc Paul LIVE ACT 4.96 23
Joshua Jay LIVE 4.96 23
Brent Braun LIVE 4.95 22
Seth Kramer LIVE ACT 4.95 21
Robert Temple LIVE 4.95 20
Bandwidth by Greg Wilson 4.95 37
Stegosaurus by Phill Smith 4.94 49
TRIUMPH Starring Oz Pearlman 4.94 31
Banachek LIVE 4.93 59
Fiber Optics Extended by Richard Sanders 4.93 29
Name and Place by Bob Cassidy 4.93 71
The Special Assortment Deck 4.93 28
Cody Fisher LIVE ACT 4.92 26
Blank Face Bicycle Deck 4.92 26
Richard Osterlind LIVE 2: Pocket Mentalism 4.92 38
Scratch by Chad Long 4.92 24
Caught Red-Handed by Michael Mode & Arthur Ottney 4.92 24
Modern Coin Magic by J.B. Bobo 4.91 46
Dave Loosley LIVE 4.91 23
Mark James LIVE 4.91 22
Strong Magic by Darwin Ortiz 4.91 22
Acrobatic Knot (with DVD) by Daryl 4.91 22
DMC ELITES : ROUGE marked deck 4.91 22
Shin Lim LIVE: Visual Magic. 4.90 21
Tornado REFILL 4.90 31
CLEAR CHOICE by Thinking Paradox 4.90 81
Choose Five for 99 4.90 79
True Triumph by Paul Cummins 4.90 29
Eugene Burger LIVE 4.89 57
Predixion by Max Maven 4.89 178
Bill Malone LIVE 4.89 36
25 Least Liked Items
Following table shows the 25 items that have the worst ratings and at least 10 reviews.
Item Rating Review Count
Phantom by Peter Eggink 1.44 16
RETRIEVE (Gimmick and Online Instructions) by Smagic Productions 1.56 16
Penciltration by Jesse Feinberg 1.70 10
Force of Will by Dave Hooper - DVD 1.71 17
Phone Phreak by Jeff Prace & Paul Harris 1.81 16
PK Coin by Nathan Kranzo 2.11 28
POST_NOTE By Antonio Smith-Plata 2.24 17
Never There by Morgan Strebler - DVD 2.29 14
Spirit by Arnel Renegado 2.33 12
The Gecko by Jim Rosenbaum 2.39 36
The Incredible Shrinking Finger by Dan Hauss (Additional handling by Paul Harris) 2.40 10
The Wizards Flip Book 2.41 17
Phone-omenon by Doug McKenzie 2.44 16
Elevator by Peter Loughran 2.47 15
BLAZE by Thinking Paradox 2.53 19
Ambitious Finger by Mario Lopez 2.53 53
Absolute Zero (Gimmick and Online Instructions) by SansMinds 2.53 15
Cheese Smile by Smagic Productions 2.55 11
Liquid Metal 2 by Morgan Strebler 2.57 14
Sealed by Menny Lindenfeld 2.57 61
GREEN FACES by Dalton Wayne 2.58 12
Ice Cold: Propless Mentalism (2 DVD Set) Limited Edition by Morgan Strebler and SansMinds - DVD 2.58 12
Nathan Kranzo LIVE 3 2.60 10
Jay Sankeys ORIGINAL Wrap It Up! (Trick Only) 2.62 21
Sharp This by Vanishing Inc 2.64 11
30 Most Controversial Items
I tried to measure controversiality with a ranking system. If all the reviewers gave the same rating for an item, then the controversiality is calculated as 0%. And the most divided option, where half of the reviewers rate an item 1* while the other half reviews it 5*, is rated as 100% controversiality. Here are the most controversial items with at least 10 reviews:

Item Rating Review Count Controversiality %
HACAAN 3.07 27 92.46
Chris Mayhew LIVE 2.94 16 90.63
Sharp This by Vanishing Inc 2.64 11 89.26
Justin Miller LIVE 3.05 22 88.64
CARD IN THE KEYCHAIN by Stefano Curci 3.20 10 88.00
Cut 2.0 LIMITED by Ran Pink 2.88 16 86.72
P'INK by Ran Pink 2.88 82 84.62
Ice Cold: Propless Mentalism (2 DVD Set) Limited Edition by Morgan Strebler and SansMinds - DVD 2.58 12 84.03
Winner's Dice (Gimmicks and Online Instructions) by Secret Factory 3.38 13 84.02
Stained Glass by Adam Grace 3.10 10 84.00
Joe Monti LIVE 3.36 14 82.14
Elevator by Peter Loughran 2.47 15 81.33
Strongman by Jimmy Strange 2.88 16 81.25
GREEN FACES by Dalton Wayne 2.58 12 80.56
iMove by Oliver Smith 2.67 12 80.56
Jay Sankey's GEMINI POUCH (Trick Only) 3.45 11 80.17
Nathan Kranzo LIVE 3 2.60 10 80.00
Titan's Finger by Titanas 3.63 16 79.69
vACAANt by Area52 3.42 24 78.13
Triple C (Red Gimmicks and Online Instructions) by Christian Engblom 3.70 10 78.00
The Switch by Shin Lim 3.67 18 77.78
Memoria by Luke Jermay (Instant Download) 3.64 11 77.69
Rudy Hunter's Total Control with Cards 3.77 13 77.51
Phone-omenon by Doug McKenzie 2.44 16 77.34
SansMinds Sharpie (DVD and Gimmick) by Will Tsai 3.00 13 76.92
Derren Brown LIVE 2.74 105 76.87
Hidden Hand by Sean Fields 2.84 51 76.62
Harlan's No Tape, No Glue, No Scissors, 20-second Setup Torn & Restored Newspaper 2.76 17 75.78
Darryl Vanamburg's "Black Widow" 3.77 13 75.74
Absolute Zero (Gimmick and Online Instructions) by SansMinds 2.53 15 75.56
submitted by VolkanOzcan to Magic [link] [comments]

Addressing the many concerns related to Obelisk

Why make ASICs at all?

Our blog has a longer post on the subject, but the ultimate answer is that GPU mining is very insecure. For the vast majority of GPU mined coins out there (including Sia), it is the case that there are multiple, if not many, individuals who operate enough GPUs to execute a 51% attack against the coin all by themselves. There are some very large Ethereum GPU farms out there, and they are a threat to all small GPU-mined coins. (our market cap is a factor of 50 smaller than Ethereum - we are a small coin). And it's not just Ethereum farms to be afraid of, there are massive GPU farms dedicated to machine learning as well, and other big-data related use cases. All of those are potential sources for a 51% attack. Even worse, if the price of the coin tanks following such an attack, the attacker has nothing to lose, because the core purpose of their hardware is unrelated to Sia, and unaffected by a change in price.
Though it sounds terrible and unintuitive, a single centralized entity running ASICs would be a much more secure situation than this. Because with a single central ASIC entity, you get two huge advantages:
  1. There's only 1 entity capable of performing a 51% attack. This is much better than having multiple entities that are each individually capable of performing a 51% attack.
  2. If the price of the coin falls, the entity that has all of the hardware loses a lot of money. That hardware isn't good for anything besides Sia mining, so that entity is quite invested in propping up the siacoin price.
We chose ASICs over GPUs because even the worst case scenario is more secure and better for the coin than the situation with GPU mining.
But we also did not want a single entity owning and operating all of the ASICs. That's when we realized, if we were ASIC manufacturers ourselves, we could guarantee that at least one entity is selling chips to the larger community. The unfortunate fact is that either way, there is going to be a small number of chip manufacturers who have the power to sell chips to the community. Even so, this is a better situation than what you get with GPU mining.
We are making ASICs so that we can guarantee the first batch of ASICs will make it to the Sia community. Without that, we have no idea if the first batch of ASICs will be sold to the public or hoarded by some greedy investors who were able to pay the full price of manufacturing up-front.

Why are you doing the presale so early?

We, put simply, don't have enough cash even to do the early development of the chips. We need financing to pay for chip development.
Traditionally, we would find some private investors, have them front some millions, and in return promise them a very good deal on some hardware. The private investors would get the first stab at buying ASICs, they'd get a huge chunk, and they'd get them at an exclusive deal for taking on the risk early. We actually had private investors come forward offering this to us, with enough money to fund the full development and manufacture of the first batch of chips - this isn't a hypothetical, it's a real offer that the Sia team received.
This didn't seem fair to us. When we finally did get to the point where the miners were ready to be sold to the community, we would have to offer the community a worse deal. Less risky, but ultimately it would mean that the community was excluded from the opportunity of participating early, and the result is a huge chunk of the chips going to some private investors.
Such a situation is still better than GPU mining, but it didn't seem like the best that we could do. We felt that we could do better by opening the early presale to everyone.

Why not accept credit cards?

Payment processors are not friendly to Bitcoin products. We contacted Stripe and were told point-blank that they would not process payments for cryptocurrency miners. We appreciate everyone who pointed us towards Stripe as a bitcoin-friendly company, but they gave us a direct no.
Paypal has a long history of freezing merchant accounts with little warning, and when they do so they freeze your existing money in addition to freezing incoming payments - we would be unable to pay our bills if Paypal did this to us, and it would unquestionably cause delays. Visa and MasterCard are not much better in terms of track record.
Losing access to our accounts would unquestionably cause delays. ASIC hardware is already well known to suffer from serious delays, and we need to limit our exposure to delays.
We are in an industry that is unfortunately fraught with fraud. With revenue-generated devices such as miners, criminals are much more likely to try to target these devices as a way to cash in on stolen credit cards, stolen identities, hacked bank accounts, etc. The fraud rates are staggering, and as a result most payment processors outright refuse to deal with it. We are aware that Bitmain is partnered with Paypal, though we don't know the details behind how that came to be.

Why not accept Siacoin?

This was a harder decision. We could quite easily choose to accept siacoin, however we fear that Siacoin is not ready to handle such a massive presale. The market cap and daily volume of Bitcoin is a factor of 100 times as large as the Siacoin market cap and volume. Moving millions or tens of millions of dollars through Bitcoin is not likely to make much of a dent. Siacoin on the other hand, a sudden sell order for millions of dollars would likely tank the price. That not only means the ecosystem is unhappy with us, it also means that we might only be able to sell $2499 of siacoin for $2200.
A lot of people have accused us of not having confidence in our own coin. Unfortunately, this is true. Even at a $500 million market cap, Sia is not ready to handle a presale of this size. It's a pragmatic decision based on the fact that we don't want to dump our own coin. We know that people will be selling siacoin to buy the miners anyway, but we still feel that this situation is much better than us accepting siacoin directly.
This decision was a disappointment for us as well. We would love to accept siacoin, and if we weren't talking about processing millions of dollars in a single day, we absolutely would be accepting siacoin. And, as Sia continues growing up, the concerns above will become less and less.

What about this 5% gains/losses stuff?

Our intention was never to play fishy financial games with our users, and honestly this isn't even something that crossed our minds as a potential problem point. I think a big part of the issue was that people did not realize we will be converting to US dollars as fast as possible - we will be doing the conversion in minutes or hours as long as we can keep up with the order volume.
The rationale is very simple. If the price plummets before we are able to convert the Bitcoin, we won't have enough money to create the hardware. We really don't expect this to matter, because we don't expect the price to swing by more than $100 (which is what would be required) in the few hours that we're going to be sitting on the BTC. If it does, we'll need more coins or we can't produce the hardware - our costs are in dollars, which means we need to end up with the right amount of dollars in our account at the end of the day.
The original stance on not returning gains was also very simple. There's no transparency into when we sell the coins. If we sell the coins within 60 minutes of receiving them, and then 4 hours later there's a huge surge in the price, we will almost certainly have users emailing us and posting about how we owe them a refund. We won't have that refund, because we'll have sold the coins before the price rise.
There's not much we can do to provide transparency into this either. And we're likely to get requests for refunds even if it takes 3 months for Bitcoin to rise by 5%. This promise of returning gains that we've put forward is going to be a massive headache, because we're not expecting to have any gains, even if the price goes up by that much we'll have likely converted to USD faster than that. Our whole goal is to convert to USD as fast as possible.
We're sorry that we have to go through this headache at all. If we could get set up with a processor like Stripe, we could accept both Bitcoin and USD and let them deal with the conversion process, slippage risk, and all the other headache associated with using multiple currencies.

Why shipping a full 12 months away?

Before we set out to make Sia miners, we did a study of companies who had previously sold and pre-sold Bitcoin miners. This included talking to both Avalon and Butterfly Labs, and talking to professionals and advisors who have shipped hardware successfully in other industries. The core piece of advice we got was pretty consistent: expect delays. Expect lots of delays, and expect them to come from the most absurd setbacks. (Example: one of the people we talked to had to delay their product because there was a global shortage of power supplies, and they had to wait in line behind billion dollar companies to get some).
Our projections indicate that if all goes well, we should be able to ship the miners in 6-8 months. Nothing we are doing is new. Plenty of companies have gone through the process of developing a chip, manufacturing it, putting it in a box, and then shipping it to users. There is almost no innovation risk here. Sia's PoW algorithm is deliberately very ASIC friendly, even more than Bitcoin. We have advisors who have gone through this process before, and the types of challenges facing us are well known.
6-8 months is reasonable, except that every single person we've talked to has told us that unexpected delays is a guarantee, and that by nature of being unexpected, there's not really any way to prevent them by planning around them. Delays are just inherent to shipping hardware. So we chose to set our target at 12 months.
We will ship the miners as soon as they are ready. If we are a few months ahead of schedule, and have somehow managed to avoid the foretold delays, we will ship them months ahead of schedule. But we want our users to have a realistic understanding of the expected delays. We've baked a generous amount of time for setbacks into our shipping date. We'll almost certainly need at least some of it.

Why $2499?

Making chips is very expensive. We have to sell thousands of units to cover the cost of the chips. A nontrivial percentage of the price is going to go towards chassis, shipping, power supply, control board, fans, etc. Those costs are relatively the same even if we put in fewer chips, which means the total percentage of our budget going towards chips drops significantly. If we cut the price in half, we'll have to sell roughly three times as many units to break even on the cost of the chips. If we cut the price in half again, we'd need to sell a completely unreasonable number of units to break even on the cost of the chips. It's unfortunate, but the fixed costs of chip manufacture means that we really need vast majority of the price of the unit to be spent on chips, otherwise we simply won't be able to sell enough units.
There is a second reason as well. As stated in the section above, the industry is plagued by delays an unexpected expenses. We need a healthy budget to plan around potential setbacks, because we've been guaranteed that there will be multiple significant setbacks by those who have gone through this process before. If we bring down the price of the unit, we will also be reducing the amount of wiggle room we have for disaster if suddenly we have to replace parts, re-do designs, or otherwise perform expensive adjustments to our plans.

Are you guys qualified to be working on hardware?

Zach is a mechanical engineer, I've been in the Bitcoin space since before ASICs started shipping, and we have advisors who have successfully shipped hardware before. The team that is designing the chips for the miner has designed chips and shipped chips for Bitcoin miners previously - they are familiar with the whole process, and have done it before. The people in charge of designing the PCB board and other aspects of the miner are also all experienced with their respective tasks. We will be facilitating frequent and strong communications between everyone working on the various components of the miner.
The ultimate answer is that the Sia development team is not qualified to be making this type of hardware. However, the Sia development team is not the team working on the hardware. Most of the heavy lifting is being performed by teams with lots of experience in this industry, including experience that is directly related to cryptocurrency miners.
What we are doing is not new. Dozens of cryptocurrency miners have been created and shipped in the past, and we are not starting from day zero. We have many advantages over the previous rounds of pre-sale cryptocurrency miners, but the biggest is that it's no longer the wild west of hardware design. There is a standard, and there are tried-and-true methods for making reliable cryptocurrency miners. We get to fall back on the mistakes and successes of the many miners that have been built previously, and we will be leaning heavily on teams and people that have direct experience in this field as opposed to doing everything ourselves.

Does this mean that Sia is getting less attention from the developers?

Sia right now has four full time employees. Myself, Zach, Luke, and Johnathan. Zach was hired in June 2017, less than one month ago. He is not a programmer.
Luke and Johnathan will continue with the same responsibilities that they've always had. They helped out a little bit in setting up the website, and in setting up a secure database to process orders + payment information, however the majority of their time has been focused on Sia even as we set up this presale. Going forward, they will be almost entirely uninvolved in Obelisk.
I have had to allocate about 25% of my time to Obelisk. Slightly more this week, due to the PR meltdown we had from the initial announcement. But most of my time is still going towards Sia. Most people know I work over 100 hours per week (some weeks will eclipse 120), and that a quarter of my time is not a small amount.
Zach is closer to 50% Sia, 50% Obelisk at this point. We're expecting that to tone down once the presale is over - much of this time has been spent with banks, with lawyers, with payment processors, and we won't have to do that beyond the initial setup phase. Zach and myself will still be having weekly conversations with every part of the Obelisk supply chain, including the chip designers, chip manufacturers, control board designers, the miner assembly teams, and the fulfillment centers, so even after the presale there will be effort going towards Obelisk.
But nobody on the Sia team is doing chip design, nobody is doing control board design, most of the really heavy work is being done by experienced teams and suppliers that we've found and already spent weeks vetting and verifying. We incorporated Obelisk as a separate company precisely so that Obelisk would eventually have a completely separate team.
And finally, as Obelisk is wholly owned by Nebulous, a successful hardware company does mean revenue and income for the Sia team. Cryptocurrency mining tends to be low margin, so tens of millions in revenue for Obelisk does not necessarily millions in funding for the Sia team. But it is something, and it will give us more time to get the storage platform to the next levels of maturity.

Conclusion

I know that a lot of you are concerned about the miner presale that we are conducting. I hope that this post has helped to alleviate those concerns. I hope it makes sense why we are doing a public presale, instead of seeking private investment until we have a full prototype. I hope this post has clarified our decisions around payment methods, and around our price point. I hope you feel more confident that this is something we will be able to pull off. And finally, I hope I've reassured you guys that Sia is still our primary focus, and that we haven't suddenly pivoted into being a hardware company.
We are ultimately doing this to provide better security to the Sia network. GPU mined coins are frighteningly insecure, and Sia is now large enough where there is serious money on the line. We are doing this to gain security, and also to ensure as much decentralization as possible when it comes to chip manufacture.
We are typically viewed as one of the most reputable teams in cryptocurrency, and I know it's why a lot of you are here. We hope that the Sia ASIC that we are going to be manufacturing and selling strengthens this reputation, but ultimately we will not find out until the miners are actually being shipped.
We continue to be excited about this new product. We truly do feel that ASICs are the right direction for Sia, and we also feel that we are doing the right thing by bringing the opportunity to own a Sia ASIC to the broader Sia community. We are sorry for the fallout from our sloppy original announcement, and we hope that we have since made up for it.
Finally, we hope that you are interested in buying a miner. Even if we only sell a small batch, ASICs are going to utterly dominate the hashrate of Sia going forward. This is an egalitarian sale where everyone has equal opportunity to buy a miner - there's no cap, and we will ensure that small buyers are not shut out by larger buyers in any way.
submitted by Taek42 to siacoin [link] [comments]

Bitcoin Core 0.10.1 Released

Bitcoin Core version 0.10.1 is now available from:
https://bitcoin.org/bin/bitcoin-core-0.10.1/
This is a new minor version release, bringing bug fixes and translation updates. If you are using 0.10.0, it is recommended to upgrade to this version.
Please report bugs using the issue tracker at github:
https://github.com/bitcoin/bitcoin/issues

Upgrading and downgrading

How to Upgrade

If you are running an older version, shut it down. Wait until it has completely shut down (which might take a few minutes for older versions), then run the installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or bitcoind/bitcoin-qt (on Linux).

Downgrade warning

Because release 0.10.0 and later makes use of headers-first synchronization and parallel block download (see further), the block files and databases are not backwards-compatible with pre-0.10 versions of Bitcoin Core or other software:
If you want to be able to downgrade smoothly, make a backup of your entire data directory. Without this your node will need start syncing (or importing from bootstrap.dat) anew afterwards. It is possible that the data from a completely synchronised 0.10 node may be usable in older versions as-is, but this is not supported and may break as soon as the older version attempts to reindex.
This does not affect wallet forward or backward compatibility.

Notable changes

This is a minor release and hence there are no notable changes. For the notable changes in 0.10, refer to the release notes for the 0.10.0 release at https://github.com/bitcoin/bitcoin/blob/v0.10.0/doc/release-notes.md

0.10.1 Change log

Detailed release notes follow. This overview includes changes that affect external behavior, not code moves, refactors or string updates.
RPC:
Block (database) and transaction handling:
P2P protocol and network code:
Validation:
Build system:
Wallet:
GUI:
Tests:
Miscellaneous:

Credits

Thanks to everyone who contributed to this release:
As well as everyone that helped translating on Transifex.
submitted by harda to Bitcoin [link] [comments]

[Index] Scaling Conference Overview: Day 2

Day 2
Conference Topic \ Speaker \ Time Link
Layer 2
Fees and Radio
submitted by KarmaNote to Bitcoin [link] [comments]

Open sourcing my start up. [DEV]

Hello Android community!
I quit my job an year ago to make a messaging app that aims to keep your friends and family safe. It does this by allowing you to share your real-time location to specific chosen people for a limited duration. Something similar to what Life360 does (but they charge for real time and they don't have instant messaging for groups/contacts)
Some key points of road map include
The goal is totally open messaging (including the client and server) so that you can setup your own serveclient and have your own messaging island for your group.
I am now at a cross road where I am thinking of open sourcing it. I have always been a proponent of open source technology and have previously worked with IBM in furthering open source (For messaging and eclipse)
Now I am planning to open source the messaging client AND the server. You can potentially install the server in your own machine and point the client to your machine to make your own secure network. I have this running on clustered Azure cloud currently.
There are plenty of reasons why I should open source it but here I list few why I don't want to.
Let me know what you think on my decision to open source my startup
Cheers
submitted by Keyser___Soze to Android [link] [comments]

[First Post] I was referred to Reddit.

Hello Redditors!
I was referred here by a floor mate of mine, she said, 'Reddit is the place to go if you ever need ANYTHING.' She made sure to emphasis the anything part.
I recently bought a complete desktop off of a fellow on Craigslist. (The guy I bought it off of is in the United States Army, and he had to literally sell it quick while he was in town. He was being shipped off to California, and was just going to throw it away if he didn't sell it.)
He was asking $75.00 for the complete setup, which I thought was decent. I emailed him an offer of $50.00, knowing his hardware was a little dated. After approximately 12 days of going back and forth, I finally was able to meet this guy and complete the exchange.
He gave me a monitor, tower, router, mouse, keyboard all for $40.00; he shaved $10.00 off for it being Christmas and all when we met. Here is a little more detail about each of the individual items.
The Monitor - It's an eMachines monitor, running 1366x768 with a 60Hz refresh. Great condition.
The Tower - It's an eMachines ET1331G-05w Model. This tower is different though, it has 2 HDDs (750GB and 200GB) and a discrete graphics card! (ATI Radeon HD 5450, to be exact.) It's running Windows 7, and I haven't used it for anything besides general web browsing and light BitCoin mining.
The Router - It was a brand spanking new NETGEAR N900 Wireless Dual Band USB Adapter, and it works great! (I was looking in stores, and it was $60.00 or so brand new!)
The Keyboard - I believe it to be the stock eMachines keyboard, nothing special. It has the Volume controller at top, with a sleep button on the right.
The Mouse - It's just a Microsoft optical mouse from what I can tell about it.
So, for a grand total of $40, I don't believe I did that bad for what I got. Allow me to get back on track with why I posted here...
My friend told me that I'd be able to get help here with building a more up-to-date computer. She explained how it's cheaper and I'd get a better computer for my dollar. I saw that there was this part of Reddit -> /buildapcforme - I don't want someone else to build my computer for me.
So, instead of going that route, I am going to propose a build and get some feedback on it.
I plan on making this the central-hub for just about everything.... Gaming, Movies, Music, Work, etc... I run Photoshop, NetBeans, Eclipse, and so much more!
Here is the AMD Build:
PCPartPicker part list / Price breakdown by merchant / Benchmarks
Type Item Price
CPU AMD FX-8350 4.0GHz 8-Core Processor $185.99 @ NCIX US
Motherboard Gigabyte GA-990FXA-UD3 ATX AM3+ Motherboard $124.62 @ NCIX US
Memory Corsair Vengeance 16GB (2 x 8GB) DDR3-1866 Memory $105.97 @ Compuvest
Storage Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive $89.99 @ NCIX US
Video Card Gigabyte Radeon HD 7950 3GB Video Card $297.98 @ SuperBiiz
Case Corsair Vengeance C70 (Black) ATX Mid Tower Case $114.99 @ Microcenter
Power Supply Corsair Professional Gold 850W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply $179.99 @ NCIX US
Optical Drive Asus BW-12B1ST/BLK/G/AS Blu-Ray/DVD/CD Writer $59.60 @ NCIX US
Total
Prices include shipping, taxes, and discounts when available. $1159.13
Generated by PCPartPicker 2012-12-31 00:55 EST-0500
Here is the Intel Build:
PCPartPicker part list / Price breakdown by merchant / Benchmarks
Type Item Price
CPU Intel Core i5-3570K 3.4GHz Quad-Core Processor $189.99 @ Microcenter
Motherboard Gigabyte GA-Z77X-D3H ATX LGA1155 Motherboard $119.99 @ Newegg
Memory Corsair Vengeance 16GB (2 x 8GB) DDR3-1600 Memory $87.99 @ Newegg
Storage Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive $89.99 @ NCIX US
Video Card Gigabyte GeForce GTX 660 Ti 3GB Video Card $321.97 @ Newegg
Case Corsair Vengeance C70 (Black) ATX Mid Tower Case $114.99 @ Microcenter
Power Supply Corsair Professional Gold 850W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply $179.99 @ NCIX US
Optical Drive Asus BW-12B1ST/BLK/G/AS Blu-Ray/DVD/CD Writer $59.60 @ NCIX US
Total
Prices include shipping, taxes, and discounts when available. $1164.51
Generated by PCPartPicker 2012-12-31 01:23 EST-0500
I feel more comfortable with AMD, because it's all I have ever used. I also like the idea of EyeFinity.
TL/DR -> What are your thoughts Reddit? Does my AMD Build look good? Does the Intel build look good?
Current Score
AMD - 1 Intel - 2
submitted by Pezikrypt to buildapc [link] [comments]

Bitcoin Core 0.10.1 released | Wladimir J. van der Laan | Apr 27 2015

Wladimir J. van der Laan on Apr 27 2015:
Bitcoin Core version 0.10.1 is now available from:
<https://bitcoin.org/bin/bitcoin-core-0.10.1/>
The distribution is also available as torrent:
https://bitcoin.org/bin/bitcoin-core-0.10.1/bitcoin-0.10.1.torrent
magnet:?xt=urn:btih:b6f8da60aaf2007cd6db631637951ae673e31044&dn;=bitcoin-core-0.10.1&tr;=udp%3A%2F%2Ftracker.openbittorrent.com%3A80%2Fannounce&tr;=udp%3A%2F%2Ftracker.publicbt.com%3A80%2Fannounce&tr;=udp%3A%2F%2Ftracker.ccc.de%3A80%2Fannounce&tr;=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr;=udp%3A%2F%2Fopen.demonii.com%3A1337&ws;=https%3A%2F%2Fbitcoin.org%2Fbin%2F
The source code can be found in git under the tag v0.10.1, or in bitcoin-0.10.1.tar.gz in the distribution.
This is a new minor version release, bringing bug fixes and translation
updates. It is recommended to upgrade to this version.
Please report bugs using the issue tracker at github:
<https://github.com/bitcoin/bitcoin/issues>
Upgrading and downgrading

How to Upgrade
If you are running an older version, shut it down. Wait until it has completely
shut down (which might take a few minutes for older versions), then run the
installer (on Windows) or just copy over /Applications/Bitcoin-Qt (on Mac) or
bitcoind/bitcoin-qt (on Linux).
Downgrade warning
Because release 0.10.0 and later makes use of headers-first synchronization and
parallel block download (see further), the block files and databases are not
backwards-compatible with pre-0.10 versions of Bitcoin Core or other software:
  • Blocks will be stored on disk out of order (in the order they are
received, really), which makes it incompatible with some tools or
other programs. Reindexing using earlier versions will also not work
anymore as a result of this.
  • The block index database will now hold headers for which no block is
stored on disk, which earlier versions won't support.
If you want to be able to downgrade smoothly, make a backup of your entire data
directory. Without this your node will need start syncing (or importing from
bootstrap.dat) anew afterwards. It is possible that the data from a completely
synchronised 0.10 node may be usable in older versions as-is, but this is not
supported and may break as soon as the older version attempts to reindex.
This does not affect wallet forward or backward compatibility.
Notable changes

This is a minor release and hence there are no notable changes.
For the notable changes in 0.10, refer to the release notes for the
0.10.0 release at https://github.com/bitcoin/bitcoin/blob/v0.10.0/doc/release-notes.md
0.10.1 Change log

Detailed release notes follow. This overview includes changes that affect external
behavior, not code moves, refactors or string updates.
RPC:
  • 7f502be fix crash: createmultisig and addmultisigaddress
  • eae305f Fix missing lock in submitblock
Block (database) and transaction handling:
  • 1d2cdd2 Fix InvalidateBlock to add chainActive.Tip to setBlockIndexCandidates
  • c91c660 fix InvalidateBlock to repopulate setBlockIndexCandidates
  • 002c8a2 fix possible block db breakage during re-index
  • a1f425b Add (optional) consistency check for the block chain data structures
  • 1c62e84 Keep mempool consistent during block-reorgs
  • 57d1f46 Fix CheckBlockIndex for reindex
  • bac6fca Set nSequenceId when a block is fully linked
P2P protocol and network code:
  • 78f64ef don't trickle for whitelisted nodes
  • ca301bf Reduce fingerprinting through timestamps in 'addr' messages.
  • 200f293 Ignore getaddr messages on Outbound connections.
  • d5d8998 Limit message sizes before transfer
  • aeb9279 Better fingerprinting protection for non-main-chain getdatas.
  • cf0218f Make addrman's bucket placement deterministic (countermeasure 1 against eclipse attacks, see http://cs-people.bu.edu/heilman/eclipse/)
  • 0c6f334 Always use a 50% chance to choose between tried and new entries (countermeasure 2 against eclipse attacks)
  • 214154e Do not bias outgoing connections towards fresh addresses (countermeasure 2 against eclipse attacks)
  • aa587d4 Scale up addrman (countermeasure 6 against eclipse attacks)
  • 139cd81 Cap nAttempts penalty at 8 and switch to pow instead of a division loop
Validation:
  • d148f62 Acquire CCheckQueue's lock to avoid race condition
Build system:
  • 8752b5c 0.10 fix for crashes on OSX 10.6
Wallet:
  • N/A
GUI:
  • 2c08406 some mac specifiy cleanup (memory handling, unnecessary code)
  • 81145a6 fix OSX dock icon window reopening
  • 786cf72 fix a issue where "command line options"-action overwrite "Preference"-action (on OSX)
Tests:
  • 1117378 add RPC test for InvalidateBlock
Miscellaneous:
  • c9e022b Initialization: set Boost path locale in main thread
  • 23126a0 Sanitize command strings before logging them.
  • 323de27 Initialization: setup environment before starting QT tests
  • 7494e09 Initialization: setup environment before starting tests
  • df45564 Initialization: set fallback locale as environment variable
Credits

Thanks to everyone who directly contributed to this release:
  • Alex Morcos
  • Cory Fields
  • dexX7
  • fsb4000
  • Gavin Andresen
  • Gregory Maxwell
  • Ivan Pustogarov
  • Jonas Schnelli
  • Matt Corallo
  • mrbandrews
  • Pieter Wuille
  • Ruben de Vries
  • Suhas Daftuar
  • Wladimir J. van der Laan
And all those who contributed additional code review and/or security research:
  • 21E14
  • Alison Kendler
  • Aviv Zohar
  • Ethan Heilman
  • Evil-Knievel
  • fanquake
  • Jeff Garzik
  • Jonas Nick
  • Luke Dashjr
  • Patrick Strateman
  • Philip Kaufmann
  • Sergio Demian Lerner
  • Sharon Goldberg
As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).
original: http://lists.linuxfoundation.org/pipermail/bitcoin-dev/2015-April/007828.html
submitted by bitcoin-devlist-bot to bitcoin_devlist [link] [comments]

Eclipse Attacks on Bitcoin’s Peer-to-Peer Network (USENIX 2015) The Moon - YouTube How to Mine DogeCoin Fast! GUIMiner Setup and Tutorial Eclipse IDE Tutorial Using Remote System Explorer

Like last year's Callisto release, the Europa release is a coordinated release of different Eclipse project teams. This year, the annual release includes 21 projects. By releasing these projects at the same time, the goal is to eliminate uncertainty about version compatibility and make it easier to incorporate multiple projects into your environment. Index T erms —Bitcoin, Blockchain, Eclipse attack, Peer-2-Peer, Security, V ulnerability. I. I NTRODUCTION. The blockchain is a novel technology, which fea-tures make it inescapable for all ... On Bitcoin and Red Balloons: examines the incentives of miners/nodes to relay transactions from the perspective of game theory. Eclipse Attacks on Bitcoin’s Peer-to-Peer Network: shows how an attacker can manipulate the peer discovery system to restructure a node's connections and thereby partition the victim node from the rest of the network. Developed in cooperation with bitcoin pool 50BTC. Screenshots: 50Miner advantages. Only username and password to start mining on 50BTC pool. Miner automatically detects video cards and other OpenCL platforms installed on your computer. If there is no necessary OpenCL platform, you will get a download link. Automatic start of mining with the optimal hardware settings. Ability to work in the ... The Bitcoin network currently uses heuristics that have been shown to substantially increase the cost of eclipse attacks. The use of alternative communication channels, anything from Tor to multihoming to satellite broadcasts, are another effective way to both prevent attacks and increase privacy. As the value of the Bitcoin network increases the need for greater protection against eclipse ...

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Eclipse Attacks on Bitcoin’s Peer-to-Peer Network (USENIX 2015)

The virtual goldrush to mine Bitcoin and other cryptocurrencies leads us to Central Washington state where a Bitcoin mine generates roughly $70,000 a day min... 👨‍🏫 Join this channel to get access to perks: Online Programming Courses! 🎓 https://www.youtube.com/channel/UCb3Ryh3sdgpDBiVVAgi1I7g/join 🚀 Tutorials ... My channel focuses on Bitcoin news and Bitcoin price. In every video I do Bitcoin technical analysis suitable even for beginners, I go through daily BTC news... How to setup pebble develop on eclipse IDE Play Up. Loading... Unsubscribe from Play Up? ... Noob's Guide To Bitcoin Mining - Super Easy & Simple - Duration: 11:37. UFD Tech 2,231,121 views. 11:37 ... 🔴 BITCOIN LIVE 🔴 BTC HISTORICAL BREAKOUT, ALTCOINS TOO- Ep.1069 - Crypto Technical Analysis Mitch Ray 804 watching Live now How to splice wires - how to solder, how to crimp, wire connectors ...

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