I accidentally sent 0.008 BTC with 0.00005 BTC fee.
Transactions ID:
9c980007fccca524d34ea1e41895ca9ea9cc9314ce62051f7e5b3f54014d0f3f

I read somewhere, that transaction would cancel automaticly, after 72h when the fee is to low. But I believe, that BTC is lost, when I don't do anything.
Has someone a guide for nontechy, how to pay additional fee or how to ccancel an unconfirmed transaction? Many thanks.

Langt ja schon, dass wir Steuerabgaben machen müssen. Jetzt ist auch noch der ganze deutsche Chat mit Steuerfragen gepflastert.
Nein, im Ernst. Es wäre übersichtlicher,  wenn die Steuerangelegenheiten in einer Kategorie gesammelt würden. Sie sind wichtig genug und belegen ja einen Großteil des Forums.

Cryptopia has a nice feature: They compare the prices of coins with other exchangers on one site. Has someone already used this info by swapping coins through exchangers to make profits from differences?

Bitcoin was considered by many, including myself, to be honest, as the result of a split that will not survive long. Now the first blocks are made and it seems that many more people are convinced by the technology of Bitcoin Cash. The price shooted up to over 700$ and I regret  having bumped it at a most unfavorable price. Is it just a straw fire or has the BCH actually overcome the weaknesses of bitcoin in technology?

I know that the martingale system could only win if an infinite amount is available and an infinitely high amount is likely to be placed and Casinos are protected against martingale.
Nevertheless, it would be interesting for theory to calculate the amount in relation to the highest known loss sequence.
Example:
Game: Dice Game
Minimum bet: 1 Satoshi
Maximum bet: no limit.
Highest known loss sequence on dice game: ?

Necessary maximum amount for theoretical safe gain: ?

Nicht, dass ich annähernd schon soweit wäre, aber für den Fall, dass der Bitcoin so weitermacht wäre es gut, zu wissen, wie Banken mit hohen Einzahlungen umgehen.
Meine Sorge ist, dass, wenn man größere Summen von Bitcoin in Euro einwechselt (wo, wäre nebenbei auch noch interessant ), die jeweilige Bank das Konto einfach einfriert.

I tried out to make a brainwallet on bitaddress but didn't work because I don't know the allowed seed words. I generated one with my own words (names) and tried to import to mycellium, but couldn't give in my words. Didn't recognize words end and it is not given a space bar.

Cryptocurrencies are great innovation. However, there are some, who worry about, what could happen, if the internet would not work for an extended period of time.
Therfore my thoughts: Would it be possible to develop a cryptocoin, which would work both offline and online and still remain decentralized? Perhaps it would in the offline time work with bonus cards with reserved codes or keys, which can be read or edited via special offline apps?

It is really easy to get the Bitcoin Cash on Coinomi Android wallet. I just tried that out.
Make sure you have the actual version and load it. Add Bitcoin Cash and go to further settings. There you type in M/44H/0H/0H and click add. Thats it.
Coinomi provides this tutorial on the link, given in your wallet.

I asked coinomi support, how they are prepared for August 1 and we can hold our bitcoins on coinomi. They gave me the link for detailed infos:
https://medium.com/@coinomi/on-bitcoin-fork-and-how-to-stay-on-the-safe-side-dcfed3eadef9
 Even the free BCC will be paid to coinomi, at split, sp that bcc can be sent, private keys exportet and more.
Maybe there are also other android wallets which are prepared for bitcoin fork. You could post them here.

Update:
Es sieht wohl so aus, dass man sich für eine aktive Kampagne bewirbt und erst einmal eine Woche postet. Dann wird man wohl im Spreadsheet erscheinen und die Posts, wenn man alles richtig gemacht hat, bezahlt bekommen. Da ich unabhängig von einer Kampagne sowieso gepostet hätte, lasse ich mich auf das Experiment ein und mache dasselbe eben mit einer Signatur.
Zweites Update: Meine letzte Vermutung war auch falsch. Da steht eine Kampagne unter den Aktiven, daweil werden keine Bewerber mehr aufgenommen und das erfährt man nicht mal über den Kampagnenmanager, sondern eher zufällig über andere User. Ich finde das persönlich keine Art eines respektvollen Umgangs miteinander, zumal ich inzwischen über andere Kampagnen gesehen habe, dass es auch anders geht. Dass man Interessierte freundlich aufklärt und sie nicht ohne Antwort im Regen stehen lässt, sollte als Standard eingeführt werden. Ich finde auch, dass Kampagnen, die niemanden mehr aufnehmen, von den aktiven Listen gestrichen werden sollten.

Hi, is there an app on google play store where I can buy bitcoin via inApp purchase?

Hopefully only a short brake. I love that faucet
A few hours ago it still worked.

I wanted to send 0.00013 Bitcoin and block.io wants to take therefore 0.002 Bitcoins for network fee. So I cant grab my bitcoins from block.io