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321  Alternate cryptocurrencies / Altcoin Discussion / Re: How many trades do you make daily? on: December 18, 2017, 08:15:52 PM
One trade a week or so, most of these trades are buy orders. I try to spread my investments over the year, as I don't want to lose it all by doing one single trade. I tend to do long-term investments, for which I've done some research prior to buying. I rarely buy coins without doing proper research, that's also a reason why I'm not a day-trader.
322  Alternate cryptocurrencies / Altcoin Discussion / Re: POS for altcoins? on: December 18, 2017, 08:03:18 PM
Lower popularity coins have a higher risk for 51% attacks then populair coins like Bitcoin. I personally believe that PoW is safer for 51% attacks than PoS as it's requires more to achieve 51% of the hash power compared to owning 51% of all circulating coins, especially for lower popularity coins. For example on coinmarketcap there at least a hundred coins that have a marketcap lower than 38 thousand, that means I can buy 51% of the circulating units for less than 1 bitcoin, if these coins would grow and I still own 51% then I'm capable of doing an 51% attack. While for a 51% attack using PoW I need to power enormous amounts of miners, probably not fitting in just one house. I think an attacker would rather buy 51% of all circulating units than powering multiple houses full with miners.

Yeah true but those are the lowest of the lowest coins on the rung. You can't say manipulate a hybrid coin like DeepOnion that easily or a coin like MUE that easily. Sure the smallest caps are easy to manipulate but if you have a decent cap you don't really need to worry about the 51% attack.
True, that's why both systems are immune for 51% attacks. However I still believe an attacker would rather own 51% of the circulating supply than having to power insane amounts of miners but that's just my personal opinion, as an attacker doesn't have to be one person it could also be a bank for example. A bank could easily miss 8 million if it would be necessary to keep them in business.
323  Alternate cryptocurrencies / Altcoin Discussion / Re: What altcoin will make us rich? on: December 18, 2017, 07:42:51 PM
I'm personally a big fan of Litecoin, as it's quite identical to Bitcoin but has some different characteristics that could be beneficial for people that want faster confirmation times. However this coin has made a big jump recently so I don't expect a jump like this soon again. But if you're just looking for a stable coin with much potential for the future, then this one if perfect for you. Other coins to look at are Monero and NEO, stable as Litecoin and a very good looking future, especially Monero with it's cryptonight algorithm for enhanced privacy.
324  Alternate cryptocurrencies / Altcoin Discussion / Re: POS for altcoins? on: December 18, 2017, 07:21:56 PM
Lower popularity coins have a higher risk for 51% attacks then populair coins like Bitcoin. I personally believe that PoW is safer for 51% attacks than PoS as it's requires more to achieve 51% of the hash power compared to owning 51% of all circulating coins, especially for lower popularity coins. For example on coinmarketcap there at least a hundred coins that have a marketcap lower than 38 thousand, that means I can buy 51% of the circulating units for less than 1 bitcoin, if these coins would grow and I still own 51% then I'm capable of doing an 51% attack. While for a 51% attack using PoW I need to power enormous amounts of miners, probably not fitting in just one house. I think an attacker would rather buy 51% of all circulating units than powering multiple houses full with miners.
325  Local / Nederlands (Dutch) / Re: bitcoin kopen voor € cash. on: December 18, 2017, 05:59:59 PM
Waarmee betaal je over het algemeen minder fee.
Meerdere keren naar een bitcoin atm of grotere bedragen in een keer.
En hoe zit dat met controle over de atms. Hoe heeft de belastingdienst hier zicht op?
Dat ligt er echt aan met wie je handelt, dat kan bij directe ruil heel veel verschillen. Over het algemeen rekenen handelaren meer fees als je een groter risico bent, dus als je minder reputatie hebt. Bitcoin ATM's zijn ook handig als je snel Bitcoin wilt, maar kosten over het algemeen meer geld. De belastingdienst heeft er weinig zicht op naar mijn idee, vermogen onder de 25 duizend in Bitcoins wordt overigens kwijtgescholden door de belastingdienst.
326  Local / Nederlands (Dutch) / Re: bitcoin kopen voor € cash. on: December 18, 2017, 10:56:14 AM
Hoe vind ik iemand met een goede reputatie om bitcoins voor cash te traden?
Bijvoorbeeld door het reputatie systeem op dit forum, het is geen volledige garantie maar het geeft wel een goede indicatie of de gebruiker voor een eerlijk gehandeld heeft. Het is wel aan te raden om een escrow te gebruiken, hou ook daar rekening mee dat je een betrouwbare escrow dienst gebruikt. Hier is het subforum om valuta te ruilen: https://bitcointalk.org/index.php?board=53.0. Ook op localbitcoins.com zitten veel betrouwbare mensen waarmee je kan handelen, ook zij gebruiken een reputatie systeem.
327  Alternate cryptocurrencies / Mining (Altcoins) / Re: On Solo Mining on: December 16, 2017, 06:20:33 PM
That's true, solo mining is more profitable because you don't pay fees. However this only applies to coins that have a low ranking, most high market cap coins are not solo-mineable unless you have multiple powerful mining rigs. The problem is probably caused by the lack of support for these low market cap coins, as most high ranked coins have third party software that supports features like this.
328  Other / Off-topic / Re: Bitcoin is not gambling on: December 16, 2017, 05:11:47 PM
Bitcoin is indeed not gambling, although it can be called speculation when you use it trade like it is an asset. But that are two different things and Bitcoin is not necessary speculation, when I started using Bitcoin in 2013, my intention was to use it for receiving payments. PayPal gave me headaches, Bitcoin was the solution for these headaches.  
329  Bitcoin / Bitcoin Discussion / Re: how safe is bitcoin to use with phone on: December 15, 2017, 04:39:32 PM
I don't find Bitcoin wallets intended for phones very secure when you compare them to desktop wallets. That's not because the ARM architecture is less secure than for example those used in PCs but because the way people use phones. Phones are nowadays used as portable computers that get connected everywhere to the internet, the combination of a wireless network adapter including their portable aspect makes them really vulnerable. Now you're thinking what's the difference with an online banking app on your phone? Well, the difference is that banks control how you're money flows so they have taken all sorts of safety measures to ensure that you're money can't get stolen easily. For instance, limit the amount you can send a day, ask for extra verification when making transactions to new recipients and also have insurance for these things. Online wallets can offer these safety measures too but I don't feel the same safety when using these, especially when the wallet company isn't registered.
330  Local / Nederlands (Dutch) / Re: Is Coinbase veilig? on: December 14, 2017, 10:59:58 PM
Armory wallet is zo'n desktop wallet, het geeft je zelf de mogelijkheid om transacties offline te ondertekenen en vervolgens met de online versie de transactie naar het Bitcoin netwerk te kunnen sturen. Persoonlijk vind ik dit nog veiliger dan een hardware wallet.
Maar houdt zo'n offline ondertekening dan in voor de bitcoin netwerk? Aan de transactie zelf verandert er uiteindelijk niets.
De transactie verandert wel degelijk, want wanneer je een transactie genereert met je online watching-only wallet is deze nog niet ondertekend met jouw private key. Dat is nou juist het fijne aan dit soort type wallets, je kan hiermee toch jouw betalingen inzien en aanmaken en tegelijkertijd staat jouw geheime sleutel achter slot en grendel, in een offline computer. Na het creëren van de offline transactie sla je deze op een USB stick en doet hem in de USB poort van je offline computer. Vervolgens onderteken je de betaling en overschrijf je de transactie die al op de USB stick staat. Nu hoef je alleen nog maar de ondertekende transactie uit te zenden naar het netwerk met jouw online wallet.
331  Economy / Service Discussion / Re: Bitcoin casinos on: December 14, 2017, 07:54:54 PM
I personally don't trust these internet casinos, unless it's video blackjack but I still have my doubts about it. Digital gamble games are programmed to generate a fixed amount of profit, random values generated by computers are never truly random, they're based on algorithms. However it's possible that you win by 'throwing the dice', they don't always win otherwise nobody would play it. But it needs an investment and chances are bigger that you lose than win, otherwise a casino would make loss.
332  Local / Nederlands (Dutch) / Re: Is Coinbase veilig? on: December 14, 2017, 07:12:06 PM
Maar wanneer krijg je dan die private key? Door btc te exporteren over verkopen naar ander wallet?

Coinbase zou ik niet vertrouwen met mijn Bitcoins, je hebt niet eens toegang tot je private-keys. Dus in theorie ben je niet de eigenaar van de Bitcoins die op jouw Coinbase account staan, want Bitcoin is zo gemaakt dat de private-key de toegang is tot jouw Bitcoins. Ik raad het sterk af als je dit soort hoge bedragen bewaard, er zijn veel betere alternatieven. In het specifiek ander type wallets, zoals papieren wallets of hardware wallets. Als je veilig zonder een grote investering geld wil bewaren dan is de papieren wallet een hele goede keus. Het enige nadeel is dat je niet actief toegang hebt tot je coins, in de zin dat je eerst je private-key (op het papier) moet importeren in een Bitcoin wallet. Als je dit wel wil maar ook de veiligheid van een papieren wallet dan raad ik een hardware wallet of een desktop wallet met offline mogelijkheden aan, deze desktop wallet installeer je dan op een computer die niet verbonden is met het internet. Armory wallet is zo'n desktop wallet, het geeft je zelf de mogelijkheid om transacties offline te ondertekenen en vervolgens met de online versie de transactie naar het Bitcoin netwerk te kunnen sturen. Persoonlijk vind ik dit nog veiliger dan een hardware wallet.
Ik snap je vraag niet helemaal. Naar welke wallet refereer je precies? Als je bedoelt dat je Bitcoins wil kopen op Coinbase en deze vervolgens veilig
wil stellen, in eigen beheer. Dan is het slechts een kwestie van kopen, een adres genereren met bijvoorbeeld een desktop wallet en vervolgens de Bitcoins storten op je nieuw gegenereerde adres.
333  Local / Nederlands (Dutch) / Re: BTC altijd in een wallet? on: December 14, 2017, 06:59:18 PM
Noob hier.

Ik heb BTC gekocht.
Na de transactie heb ik een BTC Address en een Private Key ontvangen van de verkoper.
Ik wil BTC voorlopig niet gebruiken als betaalmiddel.

Mijn vraag is:
moet ik de BTC altijd in een wallet doen of kan ik ook gewoon het BTC Address en de Private Key die ik van de verkoper kreeg goed bewaren?

Als ik het goed begrijp heb je dus Bitcoins gekocht zonder deze in je eigen gecreëerde portemonnee te storten? Dat kan handig zijn als je de hoge transactie kosten wil vermijden maar dan moet je wel heel veel vertrouwen hebben in de verkoper. Want als dat is wat je bedoeld, dan heeft de verkoper in theorie nog steeds toegang tot jouw Bitcoins. Dus als ik jou was zou ik zo snel mogelijk een papieren wallet genereren (offline) of een desktop wallet installeren als bijvoorbeeld Electrum. Vervolgens stuur je met je gekochte adres de Bitcoins naar jouw nieuwe adres.
334  Bitcoin / Bitcoin Discussion / Re: Carrying Hardware Wallets When Traveling Internationally on: December 14, 2017, 06:43:10 PM
I don't think that customs get educated to recognize Bitcoin hardware wallets, nor do they care. Google's Chromecast or flashdrives don't look much different, they're not going to plug it in a computer to check whether you have enough Bitcoins to tax. Also if I worked as a customs agent and recognized your hardware wallet, I would have congratulate you with your ticket to the moon.
335  Economy / Exchanges / Re: Coinbase plans to integrate SegWit on: December 14, 2017, 12:55:44 PM
Well it was about time. I don't know why it took them so long? They have over 13 million users and are growing every week and one would expect that they would implement this long time ago. Reducing the fees will be welcomed by all of their users and will reduce the global impact of the rising fees.
It's the customers that want lower fees, Coinbase doesn't necessary care about it. They won't profit more then they already do when they implement SegWit, as they don't receive the fees. It will cost Coinbase money to develop SegWit implementation for their platform, I guess they rather take their time and save money. Their customers don't have to know that they can impact the transaction fees unless they tell them. Although I dislike this way of entrepreneurship, I kind of understand their decision, it's all about making profit.
336  Economy / Exchanges / Coinbase plans to integrate SegWit on: December 13, 2017, 10:28:56 PM
The news is more than a week old, however I thought it was worth mentioning. Not because I use their service but rather due to their high influence on the network. The implementation of SegWit could mean drastically improved transaction times, which means lower fees. This might temporary reduce the scalability problem, I hope more wallets will follow.

Reference: https://cointelegraph.com/news/coinbase-reveals-segwit-integration-developers-working-on-bitcoin-infrastructure
337  Other / Off-topic / Re: Are bitcoins only for the educated and knowledgeable people only? on: December 13, 2017, 09:47:51 PM
No it isn't, you don't have to understand how Bitcoin works to make transactions. Most wallets these days have been optimized to be really user-friendly, making transactions is as easy as sending an email. To make a comparison: Who here really knows in detail how the banking system works? I guess a lot of people here don't, unless you studied it. So I don't have to know exactly how it works to open a bank account and use it. However if you find this technology interesting then it's a good thing to educate yourself about it.
338  Economy / Services / Re: [CFNP] | 🔥 Coinpayments.net Signature Campaign 🔥 | on: December 12, 2017, 11:17:18 PM
-snip-

Update 1: Fixed some bad Math.
Update 2: Payments for Week 10 have been released: https://blockchain.info/tx/bce8b3be73eee4c940de6c99eb990cf246280881a26eb80a5ca42236c6101cab.
The changes seem to be justified, thank you for the payment.
339  Bitcoin / Electrum / Re: How to spend my litecoin in my electrum (watching only wallet) on: December 12, 2017, 06:53:24 PM
Are you sure that you imported the right private key? It shouldn't show up as watching-only wallet, as that's a wallet that can't sign transactions because it doesn't include the private key. I use Electrum (LTC) myself, I didn't create the wallet on the software itself, like you but rather generated a private key offline and later imported it, that went fine for me.
340  Alternate cryptocurrencies / Altcoin Discussion / Re: How to sign blockchain.info bitcoin wallet? on: December 12, 2017, 06:27:57 PM
Any idea how to sign the wallet? It is required for an airdrop but  I cannot find such option on blockchain.info.
That's not possible with addresses that you created within blockchain.info. However there is a feature to sign messages which can only be accessed on imported addresses. You could try to generate an address outside of blockchain.info for example with bitaddress and then importing it to your wallet. Then it's possible to sign a message with that address, but there won't be any balance on it, so you would need to sweep your funds to that imported address. I don't really think it's worth the time you would be spending on it.
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