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1881  Local / Trading und Spekulation / Re: Der Aktuelle Kursverlauf on: July 02, 2015, 07:11:25 PM
allso ich denk mal richtig kursbewegung wird es
sonntag abend oder montag früh geben bin schon
am überlegen ob ich den abend sonntag bis
montag durch mach und bei okcoin mit hebel
bissel was riskiere he he....

was würdet ihr machen btc mit hebel oder ltc

Wie kommst du auf Sonntag/Montag?

Vermute die Abstimmung in Griechenland.
1882  Economy / Speculation / Re: Gold collapsing. Bitcoin UP. on: June 23, 2015, 04:28:31 AM
hey, i thought the network was only capable of 2-3 tx/s?  look at our peaks today.  not bad:



Those are tx merely being broadcast. "being capable of" means they can get into blocks at a sustained rate.

It would be cool to see that graph for transactions having 1 confirmation.

1883  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: June 22, 2015, 09:00:40 PM
Waiting for over 4hr for my tx now... :/

the "stress test"?

now the flow of coins is hampered... maybe a good point to start a pump?
1884  Bitcoin / Hardware wallets / Re: [ESHOP launched] Trezor: Bitcoin hardware wallet on: June 22, 2015, 07:05:17 PM

cool. thanks for posting. from that link:

Quote
To create a binary seed from the mnemonic, we use the PBKDF2 function with a mnemonic sentence (in UTF-8 NFKD) used as the password and the string "mnemonic" + passphrase (again in UTF-8 NFKD) used as the salt.

hmmm. Looking at the code I pasted before, it seems to me to me the trezor doesn't use "mnemonic" + passphrase as salt, but "TREZORHD".
1885  Economy / Speculation / Re: Gold collapsing. Bitcoin UP. on: June 22, 2015, 06:30:54 PM
Quote from: TPTB_need_war
Because I really must discipline myself to focus where I can make the most impact, which is coding and not talking.

Yes, please. Your ego has inflated well beyond the walls of this humble thread. Time to start your own.

Here's a working title: Anonymint's pedantic pontifications.

tbh: I would probably subscribe. It'd be nice to read his ramblings (which contain many intersting things) concentrated in one thread, not copy-pasted all over the place.
1886  Local / Treffen / Re: Bundesverband Bitcoin Mitgliederversammlung 20.06.2015 in Hamburg on: June 22, 2015, 08:52:10 AM
schade daß ich nicht da sein konnte ;(. Mir kam was dazwischen.
1887  Bitcoin / Hardware wallets / Re: [ESHOP launched] Trezor: Bitcoin hardware wallet on: June 22, 2015, 07:37:42 AM
Hey all, I just got a trezor and have a question.

Initially set it up w/ only PIN protection. If I enable password protection and leave some funds in the 'non password protected' accounts as well as the newly created 'password protected account'....

How does the recovery process work in this case? When doing the seed recovery process would I check the box 'password encrypted'(or w/e it is) ... if so would this restore both my 'non password protected' & 'password protected' accounts?(even tho the 'non password protected' accounts have no password?)

You should be able to use both "wallets" in parallel (or rather alternatingly) without using the restore process in between. Depending on which pw you use (empty or "something"), a different wallet is loaded. I don't know exactly how it works with myTrezor (I use electrum), but entering a different password (or no password) should do the trick.

Maybe someone who is doing this with myTrezor could chip in?

It doesn't matter if you set 'password encrypted' during recovery, you can change it later after recovery to access your password protected funds. The password function disabled technically is like entering an empty password so you can only access those funds while you have the feature disabled. Enable the feature and your other funds get accessible with the correct password.

tl-dr: yes it works, it will restore both (all) accounts.

I got ya guys, thanks! I see how it works now =)

Thats pretty badass you can have any number of password'd unique wallets on ur device!
Im guessing the way it works is the seed is simply encrypted w/ a password and the HD tree is generated from the encrypted seed unique to whatever password u use.

Yes, that is correct but if you forget the password you lose the coins, period. No way to recover them if you cannot remember the password(s).


No, that's not how it works.

wallet seed = device seed + passphrase

What I call "device seed" here (those are the words you write down) is not encrypted in any way (at least not with the passphrase). The passphrase is sent to the trezor device and simply added to that seed in some way (xor, concatenation + hash or something) and that results in the HD wallet seed used by the device to generate the wallet (addresses, xpub, private keys,...)

But of course it's true: you need the password(s) to access the wallet(s).

EDIT: here's the relevant code in the trezor firmware:

Code:
if (storage.has_passphrase_protection && storage.passphrase_protection && strlen(sessionPassphrase)) {
// decrypt hd node
uint8_t secret[64];
uint8_t salt[12];
memcpy(salt, "TREZORHD", 8);
layoutProgressSwipe("Waking up", 0);
pbkdf2_hmac_sha512((const uint8_t *)sessionPassphrase, strlen(sessionPassphrase), salt, 8, BIP39_PBKDF2_ROUNDS, secret, 64, get_root_node_callback);
aes_decrypt_ctx ctx;
aes_decrypt_key256(secret, &ctx);
aes_cbc_decrypt(sessionRootNode.chain_code, sessionRootNode.chain_code, 32, secret + 32, &ctx);
aes_cbc_decrypt(sessionRootNode.private_key, sessionRootNode.private_key, 32, secret + 32, &ctx);
}
memcpy(node, &sessionRootNode, sizeof(HDNode));

Now I'm not so sure any more Wink
1888  Bitcoin / Hardware wallets / Re: [ESHOP launched] Trezor: Bitcoin hardware wallet on: June 21, 2015, 03:48:56 PM
While you guys are on this topic....

I plan on buying a Trezor in the next 2 or 3 weeks and was planning on buying 3 but it seems like this is not needed seeing as you can have more than one account on a Trezor.

Is my understanding correct in that you can have say a sort of 'hot' wallet or rather everyday use wallet (with no password) and then say two further wallets each with their own password. If one starts up the Trezor you then only need to enter the relevant password for the wallet you are trying to access?

If the above is correct, is there a limit on the number of wallets you can have on a single Trezor?



Yes, that's correct. Technically, the passphrase is added to the seed to generate the HD seed. Knowing that it's easy to see that one can generate a very large number of different wallets this way (probably even all possible wallets, but not sure about that).

I would call these "wallets", by the way, because "account" is already used inside HD wallets.
1889  Economy / Speculation / Re: Gold collapsing. Bitcoin UP. on: June 21, 2015, 03:27:11 PM
That's false. IBLT almost halves the bandwidth requirement. Currently transactions are sent twice: once when broadcast and once as part of a block when mined. IBLT reduces the bandwidth requirement of the latter to a constant.
That particular benefit is not attributable to IBLT.

You can stop sending transactions twice by putting transaction hashes, rather than full transactions, in the block message.

IBLT allows miners to broadcast (information that can be used to construct) those hashes while they mine rather than waiting after they found the block to send everything.

When saying "IBLT" I'm talking about the proposal "O(1) Block Propagation" by Gavin.

Are we talking about the same thing?
1890  Economy / Speculation / Re: Gold collapsing. Bitcoin UP. on: June 21, 2015, 03:24:49 PM
One suggestion. Is it worth mentioning IBLT because by the time 16MB blocks are being mined they will likely be taking up just 500KB of bandwidth overhead to propagate. Obviously the real-time unconfirmed transaction overhead does remain. and is large long-term.
IBLT takes a large spike in needed bandwidth that occurs at the time a block is found and spreads it out over the entire time the block is being mined.

If you're already talking about bandwidth requirements in terms of 10 minutes averages, then introducing IBLT doesn't appreciably change anything.

That's false. IBLT almost halves the bandwidth requirement. Currently transactions are sent twice: once when broadcast and once as part of a block when mined. IBLT reduces the bandwidth requirement of the latter to a constant.

Yes, you are right. But solex is presenting IBTL like it reduces bandwidth to 1/32

That's probably a misunderstanding. He said: "Obviously the real-time unconfirmed transaction overhead does remain. and is large long-term.".
1891  Economy / Speculation / Re: Gold collapsing. Bitcoin UP. on: June 21, 2015, 02:19:48 PM
One suggestion. Is it worth mentioning IBLT because by the time 16MB blocks are being mined they will likely be taking up just 500KB of bandwidth overhead to propagate. Obviously the real-time unconfirmed transaction overhead does remain. and is large long-term.
IBLT takes a large spike in needed bandwidth that occurs at the time a block is found and spreads it out over the entire time the block is being mined.

If you're already talking about bandwidth requirements in terms of 10 minutes averages, then introducing IBLT doesn't appreciably change anything.

That's false. IBLT almost halves the bandwidth requirement. Currently transactions are sent twice: once when broadcast and once as part of a block when mined. IBLT reduces the bandwidth requirement of the latter to a constant.
1892  Bitcoin / Hardware wallets / Re: [ESHOP launched] Trezor: Bitcoin hardware wallet on: June 21, 2015, 08:44:25 AM
Hey all, I just got a trezor and have a question.

Initially set it up w/ only PIN protection. If I enable password protection and leave some funds in the 'non password protected' accounts as well as the newly created 'password protected account'....

How does the recovery process work in this case? When doing the seed recovery process would I check the box 'password encrypted'(or w/e it is) ... if so would this restore both my 'non password protected' & 'password protected' accounts?(even tho the 'non password protected' accounts have no password?)

You should be able to use both "wallets" in parallel (or rather alternatingly) without using the restore process in between. Depending on which pw you use (empty or "something"), a different wallet is loaded. I don't know exactly how it works with myTrezor (I use electrum), but entering a different password (or no password) should do the trick.

Maybe someone who is doing this with myTrezor could chip in?
1893  Local / Trading und Spekulation / Re: Der Aktuelle Kursverlauf on: June 19, 2015, 07:32:42 AM
Warum werden hier vorhergehende Beiträge so oft zitiert?

Meinst du im Gegensatz zu älteren Beiträgen?
1894  Local / Trading und Spekulation / Re: Der Aktuelle Kursverlauf on: June 19, 2015, 07:09:29 AM
Wir stehen kurz vor einem Ausbruch und hier ist Funkstille?  Grin

In welche Richtung?
1895  Economy / Marketplace / Re: Torservers - Free Anonymous Uncensored Internet for Everyone on: June 18, 2015, 07:29:50 PM
I'll buy one and since they only accept SEPA, I'll try to pay using https://bitwa.la

EDIT: this was probably the geekiest t-shirt order I ever placed. I made up an order number myself and used above service to pay. Of course I signed the order email using pgp. Let's see if this works.
1896  Other / Archival / Re: Pictures of your mining rigs! on: June 18, 2015, 05:58:56 PM
A hacky scrypt rig I assembled a while back, overclocked slightly to 13.6-13.7 MH/sec (all devices are stock because I'm a chickenshit when it comes to actually hardware modding such things  Smiley )...  It's all stuffed into a PC case because the computer therein also serves as my network gateway/firewall, so it's up 24/7 anyway.  The strips of tape across the front are just to keep my cats out while the machine is closed-up, as the front "knockout panels" have long since been removed.




hehe. cool job. I especially like the speaker.
1897  Local / Trading und Spekulation / Re: Der Aktuelle Kursverlauf on: June 17, 2015, 08:38:13 PM


nur falls es jemand noch nicht kennt und weil's so gut passt.
1898  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: June 17, 2015, 08:32:09 PM
My Friends!
Is the mankind really ready for the blog-chain, or not? I think not , because women arent very smart yet.
Discuss.

After thinking about the what and why and who of this post for 3 minutes, I give up.


Blog-chain technology is desroptive technology , hard to get if your not very smart (or not old enuf or a woman) but never give up ! Its like mankind is on the tipping point , but just not have big yarbles to think outside the box to inovate.

If you think women aren't smart enough to get bitcoin, you either have no woman or no bitcoins.
1899  Bitcoin / Mycelium / Re: Mycelium Bitcoin Wallet on: June 17, 2015, 08:01:03 PM
Accounts>Add Key>Advanced>Generate new random key

Accounts->Add Key mostly just pops up "Synchonizing, please wait ..." when I touch it. Then the message fades out. But nothing else happens. I wait a while, still nothing happens. I touch 'Add Key' again, and the same thing happens. Eventually, apparently at random, I get to choose between "Add HD Account" and "Advanced".

It looks like "Add HD Account" will let me do what I want. I can add an account for each person I want to give an address to, and name the account after them.

It tells me "All HD accounts are derived from your Master Seed - if you keep your 12-Words-Backup secure, you can restore all your HD accounts with it."

I think "12-Word-Backup" would read better.

To check this, I made a new account, selected it, then clicked 'CREATE BACKUP". We did the "Synchonizing, please wait ..." dance again, and eventually it prompted me for my PIN. I entered it. Then it told me that an additional backupup is currently not possible. And that my PIN was recently changed. That's absolutely not true. I have never changed my PIN since I first set it about a year ago. What's going on there? Why does it constantly try to "synchronize" when I'm not doing anything that should hit the network, and why won't it let me make a new backup? I just wanted to see if it gave me the same 12 words as before, for the new HD account.

Oh, also it says "we prevent you (...) to export ...". To the best of my knowledge, that should be "we prevent you (...) from exporting ...".

Just tried to do a backup of my (old) hd account.

Same things happening: "Sorry, additional backup not possible, PIN was recently changed, you have to wait for at least 288 blocks".

I hadn't changed the PIN. I recently updated.
1900  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: June 17, 2015, 07:47:44 PM
My Friends!
Is the mankind really ready for the blog-chain, or not? I think not, because women arent very smart yet.
Discuss.

After thinking about the what and why and who of this post for 3 minutes, I give up.
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