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1  Bitcoin / Development & Technical Discussion / Any wallet or address tool that can show my bip38 encrypted keys in HEX too? on: March 14, 2015, 06:11:28 PM
That is the question. I want to save some keys in cold storage in a durable medium, but I don't have the means to use all the base58 charset. HEX would be a good format.

Does anybody know a solution? I guess I could roll my own quick script or tool, but this could go horribly bad if I make a mistake. On a related question, any trustable test vectors on there for hex<->base58 converters that include bip38 keys?
2  Bitcoin / Electrum / Encrypted seedshazer on: March 05, 2015, 02:54:19 AM
I don't think this exists, but I am curious about if this ever been discussed.

Is there any standard or any plans for encrypted seeds?
It could be nice to store a mnemonic on a piece of paper, but still require a passphrase to get the actual seed.
3  Bitcoin / Mycelium / Mycelium spend from cold storage bip32 bip38 on: March 05, 2015, 02:20:32 AM
I don't know if this is possible.

Does the 'spend from cold storage' feature supports spending from bip32 wallets?
What if those bip32 wallets are ecrypted (bip38)?
4  Bitcoin / Development & Technical Discussion / BIP 32 questions on: March 02, 2015, 04:51:13 PM
I've been looking into switching to HD wallets but there is still some things I prefer about vanilla bitcoin single addresses. I don't keep an wallet per se. I have my keys on cold storage and whenever I need to spend from them, I use mycelium feature "spen from cold storage".

I do not intend to radically change the way I use bitcoin as I feel that I have the amount of security I desire. However, I do want  to start using bip32 wallets instead and possible bip38 encription and possibly bip44 mnemonics.

So the first question is: How do I manually input randomness to a bip32 seed generator tool?
My favorite way of creating keys is manually feeding a very long string of gebrish to a brain wallet tool. I would like to do something like this, but instead of getting a plain bitcoin private key, I want a bip32 seed. If possible bip38 protected and in mnemonic format. I don't know if there is good support for combining these three. By good suport I mean, easily import it to a wallet software in the future. Or, even better, use something like mycelium's 'spend from cold storage' feature.

Another question is: How easy would it be to monitor the balance of an HD wallet?
I carry around the addresses on mycelium as watch-only addresses. I would absolutely want easy access to the balance while having my private keys secured somewhere else. I read that HD wallets have this number ( which name I can't recall ATM ) that is used to derive an address from other address. If I understand this correctly, compromising security of that number would only compromise privacy in the sense that the address hierarchy can be revealed, but the private keys would still be secure. Please correct me if I am wrong in here.
I do not mind managing those numbers with less security than my private keys, but one question still remains: how would easily check the ballance of an HD hierarchy of addresses? Do most wallets suport something like "HD watch only hierarchy"?

thanks in advance.
5  Economy / Service Discussion / Why is all this MtGox situation so funny? on: February 26, 2014, 09:33:48 PM
This was unexpected to me. I have no money on gox, in any form and I am finding all this MtGox situation quite entertaining and hilarious.

I can't really say why, but I find it very funny.

I do not consider myself a person that enjoys watching other people suffering on in any kind of trouble and usually have compassion for all sorts of victims.
That pattern is clearly not holding now.

This is not trolling not irony. I can't really put the finger on it. What makes all this mtgox fiasco so entertaining?
6  Economy / Service Discussion / Is there any reliable exchange already, for europeans? on: February 23, 2014, 03:09:37 PM
The guys behind Vault of Satoshi appear to be giving all the good signs of a reliable service, of course it is early to tell.

Bitstamp is the oldest I believe, but as gox is proving as we speak, that doesn't speak much per se.

Kraken present themselves as "professional" but of course, that statement alone is worth nothing without proof.

I do not like to have assets on markets, I preffer to hold my bitcoins on addresses I own, for obvious reasons. That said, I obviously still use the fiat<->btc bridge. Which exchage would you recomend and why?

Also, feel free to post links documenting both positive or negative events relevant to such services' operations.

Thanks in advance.
7  Other / Off-topic / Is it easy to make silver coins? on: February 09, 2014, 11:45:19 AM
It appears to be a thing among cryptocoin enthusiasts, to make custom batches of silver coins.
I also noticed that some online stores selling silver coins, now have coins with the bitcoin symbol. So I am assuming it should not be a a very difficult thing to do.
How easy is it to do? How much does it cost? How is the design made and passed to the actual coin? Is it necessay any special software to design them? Or, are they made from a hand made sample?
8  Economy / Speculation / will it finally take off? on: February 01, 2014, 07:03:58 PM
Bitstamp price has been stuck quite a while between 790~815, there's a bit of moment today and support is building up... what do you think?
9  Bitcoin / Bitcoin Discussion / What's preventing minners from manipulating transaction rewards? on: February 01, 2014, 12:20:24 AM
I don't know if I am missing something in here, but AFAIK, there is nothing stopping a miner from picking up  only transactions with a reward above a certain value. Once he finds a block, if it is valid, there is nothing preventing other miners from doing the same, so in theory we could end up in a situation where the users would have to bid to get the transactions confirmed.

Has this problem been discussed? Is this a non issue? why? Is it already solved? How?
10  Alternate cryptocurrencies / Altcoin Discussion / Do you own any altcoins? Why? what for? on: January 12, 2014, 12:15:10 AM
I own bitcoins, when I first bought them, a year ago, I was thinking of buying LTC too because I had this hope that they were less known and would still go through a higher valuation.
Fast forward an year and I never really bothered

I generaly think of altcoins as copycats/bitcoin wannabes. But a couple of days ago I gave a quick look at LTC price and it had quite a bit jump last november. Could anyone provide a LTC/BTC chart that covers the whole 2013?

Is there any adoption at all of any other coin? I don't think it's very realistic to except to see "Litecoin accepted here" any time soon, let alone other coins.

Do you own any altcoin? Why?
11  Other / MultiBit / Reveal private key feature, is it too problematic? on: December 22, 2013, 04:42:57 PM
I miss a functionality to expose the private key, in a qr code so I can import it to my mobile wallet (I use mycelium).

I prefer to generate my addresses using multibit because I'm skeptical about the entropy sources used by android wallets. Indeed this has already materialized itself into a vulnerability into android bitcoin wallet.

I understand that this is not there because the client philosophy is to hide non-necessary potentially dangerous-if-misused features. In other words, there is some idiot-proofing. There is nothing wrong with that. But I feel that it comes at a bit too high price for more tech savy users.

Would a "show private key" feature be something for future versions of multibit? All the necessary pieces are already there.
12  Other / Off-topic / bitmessage subscription addresses on: August 11, 2013, 01:18:54 PM
I got bored and decided to check out bitmessage again.
I fired it up and left it running for a while, no messages from subscription addresses so far. I only subscribbed to bitmessage news ans such stuff. I suspect my bitmessage client is too old, so I'm going to try out an up to date version.

Could anyone be so kind and post interesting broadcast addresses?

Also, I keep seeing the dicussion about 'chans', what the heck is a 'chan'? How does it differ from a broadcast address?

13  Economy / Speculation / Is bitcoin sowing its muscle? on: August 04, 2013, 03:02:00 PM
A lot of trader badass wannabes have been bragging about how they are fearless and will go for their $30 so called 'cheap coins'. Turns out that is starting to be a faded mirage. Those very same so called 'traders' are now hiding in their insignificant holes or or busy trying to digest their post crash loss.

I say this because, clearly most speculators got in during the big bubble, and most of them got burned and are, to this day at loss.
This is not me speculating, it's direct conclusion of the available data. Heck, just look at the volume during the bubble.

Those cheap coins never showed up and the bubble is becoming a far event in the past with little correlation to today's market activity. The price has been slowly catching up for a month now. Little opportunities for speculators, but definitely a good sign for those that believe and hold bitcoins.

Is bitcoins proving to be a strong value store that can only be affected by speculation so much? The last bubble was less dramatic than the previous one.
Does this make sense? Is it just a coincidence?
14  Bitcoin / Legal / How do bitcoin-selling sites deal with taxes? on: April 27, 2013, 09:15:23 PM
There are several websites operating in europe that sell bitcoins, are bitcoin sales not subjected to VAT? Why?
15  Bitcoin / Bitcoin Discussion / Is this price drop so bad after all? on: April 12, 2013, 08:24:13 PM
I bought my first bitcoins ever a few weeks ago right before they started that insane climb. I had plents of time to cash out at 600% of the value I bought them for, but I always looked at it as an asset that I would like to keep for the future. When they started to drop again after the bear trap I ended up selling enough of them to get back my initial fiat investment. A third of my coins was enough to cover the initial investment. I still feel like that was an unnecessary pussy move.

If I would have cashed out, that would make me roughly what I earn in one and a half month of work. Quite frankly, that doesn't change my lifestyle that much, if anything. Owning bitcoins, on the other hand, feels a lot cooler and now that the bump is left behind I actually feel glad that the speculators went and do their thing somewhere else.

The markets are an easy and arguably fair way to buy bitcoins, but bitcoin economy became too market centered. More usage as a currency and less market speculation is what bitcoin needs, 1btc=1btc. If growth is slow but steady there is not so much room for day traders.

Am I the only one that feels like this bubble pop (whatever it was) was a good thing?
16  Other / MultiBit / Why such a tricky abstraction layer, really? on: April 04, 2013, 01:48:36 PM
I do't get this whole wallet thing. Why do transactions have so many inputs and outputs? why not simply let the user decide from which address and to which address the coins should go?

The gui is wallet based, why not making it address based instead?
17  Bitcoin / Bitcoin Technical Support / Simples key managemet? Import-export hell on: April 03, 2013, 03:22:07 PM
All this 'wallet' hacks baffles me. I had no idea the range of bitcoin clients would have such clumsy user experiences.

Why introducing all this wallet complexity instead of simply let the users work with addresses?

Also, so much import and export hacks, yet I have a couple of privatekeys in plain base58 text and it is an absurd pain in the ass to move them around from client to client.

I would like a client that lets me manage addresses and import and export privatekeys in plain base58, instead of this file format madness.

So far I'm doing it manually by exporting wallets with multibit, then editing the files to add my private keys.

What other user friendly  options are there?
I like strongcoin web interface but I don't like the idea of managing my addresses/keys from a website for obvious reasons.
18  Economy / Economics / Is deflation a solution for many world problems? Is bitcoins just the start? on: March 31, 2013, 09:36:39 AM
I guess this is been discussed many times, but maybe not with this exact focus.

I red some article of some 'economy expert' saying that bitcoin will fail because deflation gives people an incentive to save and store value instead of spending. Without an incentive to spend the economy would generally slow down.
Now, using the word 'economy' like this is an abuse in the sense that economy is not a synonym for "total amount of transactions".

Being born and raised in the country, one thing that puzzles me now that I live in a first world capital, is how pointless consumption became. In order for a business to become successful, it is necessary in the first place that it generates a big amount of transactions. There is no value in something that built with proper quality and will last for long periods of time with little or no maintenance.

Furniture, electronics, clothes, all these went from being medium term investments to almost disposable goods, and indeed this trend is moving forward. The current economical model forces production parties to keep making profit instead of just making profit.
This is fundamentally different.

Basically, deflation would enable people to hold on to whatever value they managed to collect through their work. I think it could lead to a much better sense of what 'need' really means. If the productive machine does add real value ten the currency would deflate naturally, so there wouldn't be much of a problem of people being tight to it as they would be holding more value in their pockets anyway (because of deflation).

Does this makes sense? Does it have any major flaw?

This would force a huge paradigm shift, and obviously established power would offer resistance to change. Hoever, bitcoin is proving that it is possible for the masses to push change from underneath. Can such changes be pushed to the extent of changing the core of world economics?
19  Other / Beginners & Help / is there any standard for 'encripted' private key on: March 24, 2013, 11:53:05 PM
I've been checking out clients and online wallets. Besides the silly way many clients use the term 'wallet', it has also came to my attention that many offer the possibility to show/export 'encrypted private kays'.

Now, unless there is a de facto standard that is recommended, this sounds like just yet another export format. It just happens to enforce encryption.

Is there any standard for  encripted private keys?

20  Other / Beginners & Help / Anyone using brainwallets? on: March 23, 2013, 12:11:33 PM
O love the concept, just remember a phrase and you can access your money, this is "the future" that sci-fi talked about.

Anyone using them? To which purpose? For fun? to store large amounts of value? as a payment mean?

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