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1321  Local / Anfänger und Hilfe / Re: Ledger Nano S Einsteiger on: September 17, 2019, 11:12:51 AM
So, bin nun verifiziert bei Bitpanda. Ledger nano S bleibt mein Medium, ich möchte nicht mit anderen Dingen experimentieren, bin ja froh dass ich da einigermaßen durchblicke. Mit Passphrase sind die 24 Wörtchen gemeint? Wenn ja, gut. Habe ich gesichert (aufgeschrieben) und extern gelagert.

Genau, die 24 Wörtchen sind die Passphrase. Die benötigst du um dein Wallet wiederherzustellen sollte dein Hardware Wallet kaputt oder verloren gehen. Achtung: Mit diesen 24 Wörtchen können auch andere Leute dein Wallet wiederherstellen, also sicher verwahren.


Wenn ich den Nano S anschließe, gehe auf Buy Coins, dann wird mir da irgendwann meine " Kontonummer " also die Adresse angezeigt die ich wohl angeben muss (Public Key?)
Kann ich die einfach rauskopieren, bei Bitpanda sofern ich da kaufe angeben und die Satoshi sind dann für mich in meinem Ledger gesichert? Oder habe ich die dann bei Bitpanda in einer Wallet liegen?

Ja dein Public Key ist deine Zahlungsadresse.

Achtung: Bitcoin Adressen werden zwar aus Public Keys generiert aber sind selber keine Public Keys! Im Normalfall wirst du mit Public Keys selber allerdings nichts zu tun haben.

Wie asche schon gesagt hat sind diese Adressen (beginnend mit "1", "3" oder "bc1") die "Kontonummer" die du angibst wenn du Coins bei Bitpanda kaufst. Check doppelt bevor du die Adresse auf Bitpanda bestätigst (es gibt Malware welche Bitcoin Adressen beim Copy / Pasten manipuliert) und nicht wundern wenn sich die Empfangsadresse deines Wallets nach einer eingelangten Zahlung ändert (die meisten Wallets generieren für jede eingehende Zahlung eine neue Adresse, wobei alte Adressen weiterverwendet werden können).
1322  Economy / Economics / Re: My market vision at this time... on: September 16, 2019, 11:27:26 AM
The main pull behind ETH's rise during the last bull market seems to have been ICOs. I don't think that this hype will repeat however, so I'm not sure about whether ETH will make that much of a comeback.

It also seems to me that people have become more wary about investing in alts, so that's another factor that gives me doubt in alt coins chipping away at BTC's market dominance any time soon.

Should Bitcoin make a major comeback however, I can very well imagine enough newcomers FOMOing into the crypto market via alts (ie. trying to find "the next bitcoin") to make such an investment profitable from a fiat perspective. However I have my doubts that we'll see Bitcoin market dominance drop below 50% during the next hype cycle.
1323  Local / Anfänger und Hilfe / Re: Ledger Nano S Einsteiger on: September 16, 2019, 09:55:01 AM
Backup von der Seed Phrase hast du gemacht und sicher verwahrt? Das ist mal das wichtigste bevor da irgendwelche Coins raufwandern Wink

Falls du in Österreich wohnst gäbe es noch Bitcoin Bons (bitcoinbon.at) in diversen Trafiken und bei der Post, da findet bis EUR 250,- täglich keine Verifizierung statt (nur dein Name und deine Email Adresse werden benötigt). Allerdings haben die einen relativ deftigen Aufschlag von ca 10%.

1324  Economy / Service Discussion / Re: What is the most reliable API for Bitcoin data fetching? on: September 11, 2019, 03:36:17 PM
Have you looked into Electrum? You'll have to install Electrum on your server but you won't have to run a full node:

https://electrum.readthedocs.io/en/latest/merchant.html
1325  Local / Anfänger und Hilfe / Re: Private Key --> verstehe ich das richtig? on: September 11, 2019, 01:28:49 PM
Das Grundlegende hat aundroid dir bereits erklärt. Sofern du in der Zukunft gerne näher technische Informationen erhalten möchtest, frag einfach. Hier gibt es genug Member welche ihr Wissen gerne teilen.
Gibt es auch Buch oder Online Empfehlungen, in denen das ganze in Deutsch erklärt ist?

Das klingt jetzt vielleicht blöd aber die deutsche Wikipedia Seite zu Bitcoin ist gar kein so schlechter Einstiegspunkt:
https://de.wikipedia.org/wiki/Bitcoin

Vor allem hast du dann auch gleich die für Bitcoin relevanten kryptographischen Konzepte verlinkt.
1326  Bitcoin / Bitcoin Discussion / Re: BTM ATM on: September 11, 2019, 12:46:22 PM
Has the transaction been confirmed in your wallet? There's a bit of a spike of unconfirmed transactions right now, maybe your transaction fee is too low.

If the transaction has already confirmed in your wallet you'll probably have to get in touch with the ATM provider. Is there any company name on the ATM?

If the transaction isn't marked as confirmed in your wallet, you could try doing a RBF transaction. What wallet software are you using?
1327  Bitcoin / Bitcoin Discussion / Re: Bitcoin and recession on: September 11, 2019, 09:02:38 AM
Bitcoin will definitely survive. Why should it not?

I'm a bit on the fence how Bitcoin will behave during a recession though.

As figmentofmyass already pointed out, recessions make market participants very weary and allergic to risky investments. People tend to stay in cash rather than in any investment vehicles, especially unproven ones. Gold is a bit of an exception in this regard, but I'm afraid that Bitcoin has yet to build the trust that gold already has.

However I do believe that it will also depend on where Bitcoin will be in its boom / bust cycle. If recession hits while Bitcoin is already down it might very well act as a worthwhile hedge due to its cheapness and cement its position as uncorrelated asset. The likeliness of this happening is anyone's guess though.
1328  Bitcoin / Bitcoin Discussion / Re: Reinvesting on Bitcoin after losing on: September 10, 2019, 02:43:02 PM
Did any one of you lose money buying Bitcoin?

If yes, Did you again reinvest in Bitcoin after losing?

If yes, What need you reinvest your money on Bitcoin?

You only lose money by selling at a loss.

If you already made a loss and are wondering whether you should enter the market again, ask yourself why you want to buy in once more. If your only reason to buy back in is because the price went up, than that's an excellent recipe for desaster because the next time Bitcoin goes down you'll likely panic sell at a loss once again.

The same is true if you haven't made a loss yet but are considering selling vs doubling down on your investment. Only buy if you are convinced that there's a future for Bitcoin, not merely because the price went up recently. If you're not convinced by Bitcoin aside from its price, don't buy it. Simple as that.

In both cases, don't invest more than you can afford to lose. Don't be invested at a level that is high enough to put pressure on you, financially or psychologically.
1329  Bitcoin / Bitcoin Discussion / Re: An indisputable proof that bitcoin is fake money on: September 10, 2019, 01:15:37 PM
In the case of gold certificates things are similar, it is just that those two stages are reversed. Namely in stage one, one party of the exchange deposits some gold at the bank and receives a certificate for it. This certificate is then traded for goods or services and in that way put into circulation. In stage two the opposite party i.e. a current holder of the certificate takes it to the bank to claim the deposited gold. Once the holder receives the gold the exchange process is finished. And this is how goods and services are exchanged with the help of gold certificates.

So the solution is easy. Just make Bitcoin certificates and use that as money. Problem solved Wink

On a more serious note, anyone can establish a rather arbitrary definition of A and then claim that B is not A because B does not fit that arbitrary definition. But there's no knowledge to be gained from that line of argumentation.
1330  Bitcoin / Bitcoin Technical Support / Re: Opt-in telemetry on: September 09, 2019, 01:24:39 PM
Given the nature of Bitcoin, you want things to stay anonymous, so this information must guarantee to not contain the wrong metadata.

If we've learned one thing about the corporate and governmental data collection binge of the last few years than it is that it doesn't matter whether it's "only" metadata. When someone wants to stay anonymous, any amount of metadata is a liability.


You could raise the same point for bitcoin.org maintenance.

People do raise the same point for bitcoin.org Wink

Let's not introduce a new problem just because a similar one already exists.
1331  Economy / Trading Discussion / Re: Do not ignore the small profits in Bitcoin investments. on: September 05, 2019, 08:30:44 AM
One common reason for people ignoring the small profits seems to be them trying to go for maximum profits by attempting to call the bottom and / or top (ie. trying to time the market). If people were better at accepting the impossibility of this notion fewer people would fuck themselves over. Just ease your way in and out of the market. It may not be an optimal strategy but it's less risky and more importantly less likely to make you tilt and FOMO.
1332  Bitcoin / Development & Technical Discussion / Re: OTP for crypto transactions on: September 04, 2019, 03:12:38 PM
I am wondering how OTP will prevent if you are sending crypto-currency into wrong address. OTP will ensure that fund sending by right person, it will not verify address that you are going to send funds.

I also don't see how OTP can mitigate cases where a user sends funds to the wrong address (eg. due to clipboard-malware). The only way I currently see to avoid this problem is to (1) double check the address before pressing send and (2) confirming the address over a secondary device / communication channel (eg. via phone or email). I'm not sure if there's a good solution for automating / integrating this process of recipient confirmation though.

Obvioulsy the OTP would not autocorrect the addresses but it would give us the time to double check the transaction. Many users don't even cross verify the address and simply broadcast it to the blockchain and later regret.
Adding an OTP won't help us with this but just provide an extra step thus providing an extra time to think before making the transaction.

From this point of view maybe adding an "undo" feature like Gmail has could help.

Obviously there's nothing being undone for real, but the short delay it introduces can help with the second thoughts that hit you after pressing "send". It's a neat little psychological trick that doesn't do much, technically, but at least from my personal experience it does make a difference.

Problem being, I'm afraid the majority of people don't realize that they have sent funds to the wrong address until way after the fact. At least that's the impression I get from the support requests hitting the Bitcointalk forums.
1333  Economy / Scam Accusations / Re: Cheating Players By A Cryptocurrency Website CRYPTOGAMES.NET on: September 04, 2019, 01:19:47 PM
Wrong forum, this thread probably belongs to Service Discussion:
https://bitcointalk.org/index.php?board=85.0

Also they have a thread over at the gambling section, so maybe you can get in touch with their Bitcointalk account over there:
https://bitcointalk.org/index.php?topic=750760.4440
1334  Local / Anfänger und Hilfe / Re: Blockchain auf einmal neue Adresse? on: September 04, 2019, 12:06:28 PM
Die meisten Bitcoin Wallets generieren für jeden neuen Zahlungseingang eine eigene Bitcoin Adresse.

Ebenso werden bei Zahlungsausgängen idR sämtliche Bitcoins einer Adresse auf eine neue, sogenannte Change-Adresse ("Change" wie in "Wechselgeld") bewegt (minus dem ausgehenden Betrag, logischerweise) was dazu führt das alte Adressen auf einmal leer sind, die Bitcoins aber immer noch in deinem Wallet verfügbar sind (nur eben unter einer anderen Adresse).

Das ist normales Wallet-Verhalten und dient unter Anderem einer verbesserten Privatsphäre.

Solange du (1) eine legitime App installiert hast (die offizielle Blockchain.com App sollte in Ordnung sein) und (2) ein Backup der Seed Phrase hast sollten somit auf einem nicht-infizierten System keine Coins verloren gehen.

Außer bei Exchanges die so tun als wären sie Wallets gibt es keine Limits.
1335  Bitcoin / Development & Technical Discussion / Re: OTP for crypto transactions on: September 04, 2019, 09:06:11 AM
I am wondering how OTP will prevent if you are sending crypto-currency into wrong address. OTP will ensure that fund sending by right person, it will not verify address that you are going to send funds.

I also don't see how OTP can mitigate cases where a user sends funds to the wrong address (eg. due to clipboard-malware). The only way I currently see to avoid this problem is to (1) double check the address before pressing send and (2) confirming the address over a secondary device / communication channel (eg. via phone or email). I'm not sure if there's a good solution for automating / integrating this process of recipient confirmation though.
1336  Bitcoin / Bitcoin Technical Support / Re: sendtoaddress sending 0 amount every time PHP on: September 02, 2019, 08:18:11 PM
Is this the library you are using?
https://github.com/aceat64/EasyBitcoin-PHP

Because that library appears to be outdated:

easybitcoin seems to be no longer working, or needs some tweaking.

I have written a php function using curl.
You can use this php function, if you are also looking for a solution:
Just pass the method in the function and make sure to edit out your rpc details inside the function.

Code:
<?php

function bitcoin($method){
$ch curl_init();
$rpcuser='rpcusername';
$rpcpassword='rpcpassword'
$host='nodeIP';  //IP address of your node or localhost, if running locally
$port='port';

curl_setopt($chCURLOPT_URL"http://$rpcuser:$rpcpassword@$host:$port/");
curl_setopt($chCURLOPT_RETURNTRANSFER1);
curl_setopt($chCURLOPT_POSTFIELDS"{\"jsonrpc\":\"1.0\",\"id\":\"curltext\",\"method\":\"$method\",\"params\":[]}");
curl_setopt($chCURLOPT_POST1);

$headers = array();
$headers[] = "Content-Type: application/x-www-form-urlencoded";
curl_setopt($chCURLOPT_HTTPHEADER$headers);

$result curl_exec($ch);
if (
curl_errno($ch)) {
    echo 
'Error:' curl_error($ch);
}
curl_close ($ch);
return(
$result);
}
$method="getblockchaininfo"//bitcoin-cli method like getchaininfo,getwalletinfo etceter
$lol=bitcoin($method);
?>



Cheers!


It also says so on the GitHub page itself:

A simple class for making calls to Bitcoin's API using PHP. This is an old library, I suggest instead using https://github.com/denpamusic/php-bitcoinrpc


If you are referring to another PHP library please post a link for clarification.

1337  Bitcoin / Development & Technical Discussion / Re: Blockchain & Machine learning on: August 30, 2019, 08:27:39 PM
For an AI wanting to obtain memory states and live on forever a incentivized blockchain would surely be the way to go, say if we reached a point where we could store our memory states on the blockchain such as altered carbon, would you really want to store that in a regular distributed system? No you would want to obtain the security that blockchain provides in a trustless manner, as our memory states would need to live on forever.

If only AI or blockchains would work that way.

While I have no idea how consciousness can be stored -- no one has, humanity hasn't yet the slightest clue what consciousness even is -- I'm fairly certain it won't be on a blockchain.

Maybe one day humanity will be able to externally store memories (beyond mere audiovisual reproductions) and minds (be they human or artificial) but that technology is probably still a few generations out and won't be technology we'll be able to fathom.
1338  Bitcoin / Development & Technical Discussion / Re: Blockchain & Machine learning on: August 29, 2019, 11:36:29 AM
Where in my statement do I show to not have understood such obvious assumption? Any consensus mechanism which is highly demanding on computational resources will obviously have fee's, they go hand in hand  Huh

I think the "problem" with "blockchain the technology", ie. outside the context of cryptocurrencies is two-fold:

1) Permissioned blockchains still seem rather pointless. For most use cases classical distributed databases (or distributed systems in general) are doing a much better job. Even in the iRobot takedown scenario the main properties that were missing are security and robustness. That you can do in a distributed manner without using "blockchain the technology", in a much more reliable and efficient way at a much lower cost.

2) Permissionless blockchains without PoW-based consensus algorithms so far are often either not really permissionless or not really secure or both. Most of the time you either have (a) committee-based validators or an other form of central coordination which mostly rids of permissionlessness -- which leads back to (1) above. Or (b) variants of Proof-of-Resource like PoS that -- as of now -- are still mostly work in progress in terms of security and robustness.

I guess there could be ways in which permissionless blockchains could support AI and vice versa but I think the overlap where they would complement one another are rather limited. I'm afraid in most cases you'll end up with either a shitty AI or a shitty cryptocurrency.
1339  Bitcoin / Bitcoin Technical Support / Re: Why would someone keep sending 546 Satoshi to themselves? on: August 28, 2019, 06:56:42 PM
I read that omni uses omnicore, will this accept the bitcoin blockchain and is it compatible with lightning once I get that up and running (I want to test out omni and see what it offers) ?

I'm afraid for LN-based Bitcoin tokens you'll have to keep an eye on RGB:
https://github.com/rgb-org/spec

As far as I know neither OMNI nor XCP (Counterparty, a similar Bitcoin-based token project) are currently LN-capable and so far I'm not aware of any announcements in this regard.
1340  Bitcoin / Bitcoin Technical Support / Re: Why would someone keep sending 546 Satoshi to themselves? on: August 28, 2019, 12:57:33 PM
Ahhh thanks pooya I'll have to take a look at omni I haven't looked into it but it looks like a way of making tokens and contracts much like on ethereum (without the virtual machine part).

USDT is probably the most famous OMNI token, just as a reference. Also it used to be called Mastercoin, so it might well be that you have already stumbled over this project in the past, with its old name.
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