juraj.bednar.sk
Avoid news - Ramblings of Juraj
http://juraj.bednar.sk/blog/2013/08/28/avoid-news
If you have an intellectual minute, read Avoid news by Rolf Dobelli. I try to learn more about internal structures of the world by reading books. I add to the suggested diet by reading books which I know I won’t agree with to challenge what I believe. I also try to talk to people with opinions highly different than mine. Also read this article by N. N. Taleb. Which explains why noise explodes faster than data (and thus why you should read less news, not more). Warning: equations ahead! What do you think?
juraj.bednar.sk
Ethereum and other altcoins - Ramblings of Juraj
http://juraj.bednar.sk/blog/2014/03/26/ethereum-and-other-altcoins
Ethereum and Other Altcoins. Because it can’t buy anything. I think this is one of the most important drawbacks of Bitcoin right now - it is not universally accepted. On the other hand, it is gaining traction and I like both the ideas behind Bitcoin and its technological ingenuity. So far the main reasons behind developing alt-coins (except for fun and pre-mining profit) has been a different mining algorithm and speed of confirmation. I’ll touch both of these and then I will cover Ethereum. Now take the ...
bednar.sk
Interview with me about Bitcoin and other virtual currencies - Ramblings of Juraj
http://bednar.sk/blog/2013/12/12/interview-with-me-about-bitcoin-and-other-virtual-currencies
Interview With Me About Bitcoin and Other Virtual Currencies. There was an interview with me on a Slovak web about money. And I decided to translate it to English (and do a few minor edits). Enjoy! Is Bitcoin a pyramid scheme? Certainly not, is more like gold. Juraj Bednar talks about the most popular virtual currency in the world. Mining and buying are two ways of getting Bitcoin. What is the difference? Is it better to mine or to purchase Bitcoins? Isn’t it a bit of like a pyramid scheme? You should be...
bednar.sk
About Hacktivism: My TedX talk with English subtitles - Ramblings of Juraj
http://bednar.sk/blog/2013/08/26/about-hacktivism-my-tedx-talk-with-english-subtitles
About Hacktivism: My TedX Talk With English Subtitles. This Tedx talk is about hacktivism in a modern world and it’s morality. It talks about Moral Reform, an artistic performance of Czech art group called Ztohoven. The setting: Czech Parliament. More about Moral Reform can be found in my previous blogpost. Or at the project’s page on Ztohoven.com. There is also an English translation of the slides. Enjoy and I hope you liked it! Posted by Juraj Bednar. Laquo; OHM2013 - hackers are camping.
bednar.sk
Stuck Bitcoin transaction and play with double-spend - Ramblings of Juraj
http://bednar.sk/blog/2013/08/14/stuck-bitcoin-transaction-and-play-with-double-spend
Stuck Bitcoin Transaction and Play With Double-spend. Mktx does not work, because I don’t have enough unspent outputs (same as paying from the GUI). I found out a very lame and easy solution. I thought if Electrum does not see the old transaction, it can spend the inputs again. So I changed wallet.py. There’s a function called update tx outputs that takes a tx hash and updates a list of spent outputs. I modified it like this:. Takeaways: Pay the transaction fee, really. Nodes try to refuse double spe...
bednar.sk
Avoid news - Ramblings of Juraj
http://bednar.sk/blog/2013/08/28/avoid-news
If you have an intellectual minute, read Avoid news by Rolf Dobelli. I try to learn more about internal structures of the world by reading books. I add to the suggested diet by reading books which I know I won’t agree with to challenge what I believe. I also try to talk to people with opinions highly different than mine. Also read this article by N. N. Taleb. Which explains why noise explodes faster than data (and thus why you should read less news, not more). Warning: equations ahead! What do you think?
bednar.sk
Spying, liberty, NSA and USA vs. Europe - Ramblings of Juraj
http://bednar.sk/blog/2013/08/08/spying
Spying, Liberty, NSA and USA vs. Europe. When I discussed the loss of American liberties with people here in Europe few years ago, my position was simple - we get the same draconian regulations without any opposition or fanfare here in Europe. Remember export controls of cryptography? Do you remember Communication Decency Act of 1996? The Americans fought against it. There were blogs and strong opposition. Do you remember data retention? That is until recently. While information about massive surveil...
bednar.sk
Ethereum and other altcoins - Ramblings of Juraj
http://bednar.sk/blog/2014/03/26/ethereum-and-other-altcoins
Ethereum and Other Altcoins. Because it can’t buy anything. I think this is one of the most important drawbacks of Bitcoin right now - it is not universally accepted. On the other hand, it is gaining traction and I like both the ideas behind Bitcoin and its technological ingenuity. So far the main reasons behind developing alt-coins (except for fun and pre-mining profit) has been a different mining algorithm and speed of confirmation. I’ll touch both of these and then I will cover Ethereum. Now take the ...
juraj.bednar.sk
On darkness: Your fear of death attracts such strange objects - Ramblings of Juraj
http://juraj.bednar.sk/blog/2013/06/16/on-darkness-your-fear-of-death-attracts-such-strange-objects
On Darkness: Your Fear of Death Attracts Such Strange Objects. I am widely known for listening to darker genres of music. It makes some people feel I am a complete weirdo (which is true). A few weeks ago I was sitting in a cab with a full album (! Of Aqua playing on a radio. Happy songs of happy days, so unauthentic. It thankfully ended with me putting my headphones on :). Why do we fear darkness? It can happen on a clear day. Thanks to bystander effect. We are not even much safer during the day. DIGMIA ...
juraj.bednar.sk
Interview with me about Bitcoin and other virtual currencies - Ramblings of Juraj
http://juraj.bednar.sk/blog/2013/12/12/interview-with-me-about-bitcoin-and-other-virtual-currencies
Interview With Me About Bitcoin and Other Virtual Currencies. There was an interview with me on a Slovak web about money. And I decided to translate it to English (and do a few minor edits). Enjoy! Is Bitcoin a pyramid scheme? Certainly not, is more like gold. Juraj Bednar talks about the most popular virtual currency in the world. Mining and buying are two ways of getting Bitcoin. What is the difference? Is it better to mine or to purchase Bitcoins? Isn’t it a bit of like a pyramid scheme? You should be...
