If you act like a teen you will not be treated like an adult. Hilariousandco is trying to give you a different perspective here and you react with insults. You ask people to missuse the trustsystem because you feel it has been missused. You also try to get green trust so hard one has to wonder if your intentions are honest.
There is no shortcut to trust here, deal with it.

I can only guess, but the behaviour you describe is what bitcoin-core does when it can not find a wallet.dat file, it just creates a new one. For Win8 this file would be in %APPDATA%/Bitcoin, where %APPDATA% [1] is a specific folder that is related to the useraccount. So most likely something happend to your userprofile that cause the file to corrupt and/or get deleted.


[1] http://windows.microsoft.com/en-us/windows-8/what-appdata-folder - see the "roaming" part

Internally bitcoin are handled as satoshi, thus there are no "float-problems". A division could still result in problems because e.g. 100k Satoshi / 3 would result in 333333 which might not be correct depending on your use case.

Take a quote and blow it out of proportion. That article contains nothing but FUD. At least they linked the thread in question.

You have to figure out what happened to the original wallet.dat. What OS do you use? Did you have problems with your hdd? Do you have a backup of the file?

Its not about storrage of keys, its about transfering your unsigned TX from the hot wallet to your cold wallet to get it signed and back without risking the cold wallets machine to get some virus/trojan/etc. the hot wallets machine might have.

If you still have problems afterwards, try connecting to good (as in fast and reliable) full nodes. I collected a list over time, if anyone reading wants to add some, feel free to contact me to improve it.

You can either add them with addnode IP add from console or add them in your config file [1] with addnode=IP.


Edit: updated the list


[1] https://en.bitcoin.it/wiki/Running_Bitcoin#Sample_Bitcoin.conf

The protocol currently does not support a public note. I guess you used some sort of online wallet that would allow you to store such a note on their database and show it to the public when information about that transaction is requested. Blockchain.info maybe? If so, contact support.

Yes, a HD wallet would certainly solve the problem of the backup. I actually had that in mind when I wrote this, but I couldnt come up with one. I was more thinking out loud than shouting: OMG DONT DO THAT!!111 I recently tested bither and while I like the way you can generate keys, I dont like that they restrict the possible keys for a hot wallet to 10. Sadly no breadwallet for android, but I just read greenwallet is HD as well.


The problem is not the phone itself but the way most users handle their phone - or at least a lot, I dont have actual numbers here, its just something I observe when people use their phones. TouchID is just a gimmick and provides next to no security [1]. Passcodes and lengthy passphrases are barely used because it takes to long to unlock the phone. 4 or 6 digit PIN can be shoulder surfed as well as these patterns people tend to use. An additional risk for the patterns is that they show on the front of the phone when used with oily skin. This however has nothing to do with the way the btc wallet handles change and should just tell you that you should not hold more bitcoin on your phone than you would in your regular wallet.


[1] http://www.ccc.de/en/updates/2013/ccc-breaks-apple-touchid

Somewhere in this thread [1] are several explanations how to work with ninja trader for bitcoin IIRC. Read it a while ago, maybe around page 20ish. If you search for it in the print view you should find some hints.


[1] https://bitcointalk.org/index.php?topic=60501.0

Multibit automatically makes a new file for each address (or better private key) you generate. More about all those files here [1].


[1] https://multibit.org/en/help/v0.5/help_fileDescriptions.html

If I may: https://en.bitcoin.it/wiki/Electrum/Documentation#Change_Addresses

its a little more about Electrum while explaining the same principles

@OP should you not find the "missing" coins in one of your change addresses, consider trojan.

There are no set rules. Avoid trades vs. something that can easily be revoked (e.g. paypal). Dont accept 0 confirmations. Use escrow to increase security. Other than that apply general trading advice: dont rush, take your time double and tripple check, dont trade while your head is elsewhere.

Note: since you didnt specify "trade" I assumed digital goods.

Isnt that a bad idea for a phone? I mean you usually have 1, 2 or at least very few addresses on a phone in comparisson to the number you might have on a regular machine. But in order to send the change to a fresh address the phone would have to generate a new key pair and your backup would need an update. On the other hand if you allready have several private keys and addresses generated you could just add one of them as another receiving address.

#1 write down what you think the passwors ia and copy pasta it into the mask, might be something with your keyboard settings
#2 write down several combinations of your password with your usual typos (e.g. just type fast without thinking about the keys)
#3 find the seed / hire someone to write a bruteforceattack for you specific passwords. A general attack will not work unless you have a very bad password. There are threads for that. They usually refer to bitcoin core, but reading them can give you a hint who to contact and what they will need and what not. If you used the same or a similar password elsewhere, change them all.

Yes, he asked for it in advance and is allowed to do so. There was a seperate thread for that.

Wieso nimmst Du nicht die Google-suche? Die unterliegt keiner Beschränkung. Ach und die Beschränkung lässt nach mit Activity level. Geht dabei nur darum das man nicht mit immer neuen Accounts das Forum lahmlegen kann (z.B. durch Spam oder hohe CPU last durch Suchanfragen).


Gute, aber nicht vollständige Liste: https://bitcoin.org/de/waehlen-sie-ihre-wallet


Generell schlechte Idee sind: closed source, unbekannte Authoren, keine Erfahrungen seitens der Community. Solange der Quellcode offenliegt erledigt sich zumindest der 3. meist von alleine.

Kurzer Überblick über die guten:

- Bitcoin-core - braucht Platz, unterstützt das Netzwerk
- Armory - braucht noch mehr Platz, erlaubt unglaublich viele Funktionen (Multisig etc), setzt auf Bitcoin-core auf
- Multibit - sehr einfach zu bedienen, nimmt einem die meiste Denkarbeit ab, braucht kaum Platz, wird allerdings auf HD* überarbeitet, lohnt sich als meiner Meinung nach nicht mehr
- Electrum - braucht kaum Plazu, einfach zu bedienen, eines der einfachsten Backup Systeme, eine der ersten HD wallets
- Mycelium - fürs Telefon (Android), bietet eigenen "Marktplatz" (Mycelium local trader) der die Kontaktaufnahme erleichtert.
- Bither - fürs Telefon, nicht über obigen Link zu finden, bietet sehr schöne Möglichkeiten Schlüssel zu erzeugen, bietet aber keine Währungsumrechnung in EUR und würde ich zur Zeit auch eher für Fortgeschrittene empfehlen und ich spiel zur Zeit noch mit rum, hab also genau 0 BTC damit transferiert.
- blockchain.info und andere Webwallets würde ich meiden. Generell sollte eine gute Wallet Dir immer die volle Kontrolle über Deine privaten Schlüssel erlauben.

* HD? HighDefinition? Nein, Hirachically deterministic. Das meint im Endeffekt das deine privaten Keys und Adressen von einem leicht zu sicherndem Wert (seed) abhängig sind und egal wieviele Adressen Du generierst nur einmal sichern musst. Dafür hast Du aber auch ein großes Problem falls der seed mal futsch sein sollte.



Die wird durch die wallet erstellt. Zu jeder Adresse gehört ein private Schlüssel der das ausgeben ermöglicht. Um mal zu gucken wie die aussehen (in für Menschen verständlichem Format) bietet sich https://www.bitaddress.org/ an. Aber bitte die Seite nicht für ernsthafte Generierung benutzen ohne vorher Sicherheitsmaßnahmen getroffen zu haben.

fasten your seatbelts