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 Bitcoin Thread v1, and other cryptocurrencies

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jack2
post Jan 10 2017, 02:04 PM

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QUOTE(lucifart @ Jan 10 2017, 01:52 PM)
Do you know where I can sell my bitcoin at market price pls...tq
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Sorry, I dunno. If I know, I won't be buying from you.

I have my market to sell it off.
jack2
post Jan 10 2017, 02:07 PM

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QUOTE(lucifart @ Jan 10 2017, 02:05 PM)
Tell lah...why so secret where you sell???
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hahaha. If i tell you, I can't earn anything.

As you are not willing to sell at a bit cheaper than market price, then no point to further our deals.

Will you tell me how you earn your bitcoin?

Of course no.

If you are not willing to forgone some little profit to let other earns, then you do it from A to Z lah.... rclxm9.gif

This post has been edited by jack2: Jan 10 2017, 02:08 PM
jack2
post Jan 10 2017, 02:40 PM

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QUOTE(lucifart @ Jan 10 2017, 02:28 PM)
I bought about 20 bitcoin when its around usd 200...its ok lah malaysia mentality wont help pipu one... whistling.gif anyway have buyers liao for some of my bitcoin whistling.gif
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Good luck
jack2
post Jan 10 2017, 03:01 PM

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QUOTE(lucifart @ Jan 10 2017, 02:59 PM)
Thanks!!! Sold 4 btc for a damn good price hehehehehehehheheheheh thumbup.gif
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What price did you sell?

Let me see if it meets my margin or not.
jack2
post Jan 18 2017, 01:10 AM

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Bitcoin wallet address, will you always change the address for each payments like use and throw?
jack2
post Jan 18 2017, 01:41 PM

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anyone who wants buy bitcoin, can PM me
jack2
post Jan 18 2017, 09:01 PM

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QUOTE(MNet @ Jan 18 2017, 08:33 PM)
what is ur price
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At real time market price at transaction time.
jack2
post Jan 19 2017, 09:26 AM

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QUOTE(wengherng @ Jan 19 2017, 12:54 AM)
Real-time market price......which market?
Which exchange are you using as a basis?
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https://bitcoinaverage.com/en/bitcoin-price/btc-to-usd
jack2
post Feb 11 2017, 11:58 PM

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Can buy from me.
jack2
post Feb 15 2017, 09:39 AM

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anyone who wants bitcoin can buy from me.. hehe
jack2
post Feb 15 2017, 11:35 AM

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QUOTE(kmarc @ Feb 15 2017, 10:06 AM)
You didn't reply me previously. How to buy from you? Cheaper? 🙂
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Probably I overlooked it.

Price = market price = you agree, I agree.. haha
jack2
post Feb 16 2017, 11:51 PM

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QUOTE(kmarc @ Feb 16 2017, 09:09 PM)
I just bought Trezor hardware wallet from their online store. Expensive but for investment, no choice. USD 99 for the device and USD 29 for courier.  cry.gif

Today, bought some bitcoins from Remitano. Quite convenient too. Surprise that nowadays, interbank instant transfer is really instant!  rclxms.gif

After buying the bitcoin, I notice my bitcoin wallet address changed. I panicked because I used the previous address.  icon_question.gif After that, I realized that the addresses will change, I think after a few transactions?  hmm.gif Will read more of their FAQ later on. Anyway, received my bitcoins after 30 mins... phew!
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Why need that hardware wallet? To store password?
jack2
post Feb 17 2017, 03:33 AM

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QUOTE(wengherng @ Feb 17 2017, 12:32 AM)
That's something like RM 1k per year if you run it full time.
Not bad at all.
To store your private keys.
Your bitcoins are not really yours, unless you control your private keys yourself.
Bitcoins are pretty much like cash, i.e. whoever holds your private keys will have the full unobstructed access to spend them......hence a hacker who is able to hack into the exchange may be able to steal all the private keys stored by all the users of the exchange, and therefore "steal" your bitcoins.
In a hardware wallet, the private keys are stored offline, disconnected from the internet, and therefore can never be hacked.
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Private keys consist like long long password? Must buy such hardware to store it?
jack2
post Feb 18 2017, 12:18 AM

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QUOTE(wengherng @ Feb 17 2017, 11:55 PM)
In simple terms, private keys are long strings of alphabets and numbers, or somewhat like a long password as you mentioned.
In order to move any bitcoins (buy, sell, transfer, etc.), it requires two parts, a public key and a private key, and these two combined will signify that you have the authority over those bitcoins.
Anyone who controls the private keys, control the bitcoins.
Treat it exactly as cash. If you wouldn't trust your hard earned money with some random stranger on the street, you shouldn't trust an online website or exchange to have control over your private keys either, because quite simply, you just can't be sure that they will not be hacked, or go bankrupt, or just one fine day decide to close down the business and disappear with all the stored private keys of its customers.
Remember, unlike conventional banks (which are regulated by the government and have all its deposits insured), bitcoins are NOT insured and NOT protected/backed by any government, so if they're gone, they're gone.
I'm one of those more paranoid ones.
I believe that even mobile phones can be hacked.
Keeping them some place really safe, where they are never connected to the internet, like a hardware wallet, is still the safest bet.
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How to keep the private key ourself instead of by Bitcoin providers?

jack2
post Feb 18 2017, 11:33 PM

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QUOTE(wengherng @ Feb 18 2017, 11:48 AM)
1. Buy a hardware wallet from a respectable company, and verify that the code is open source.
2. Set up the hardware wallet. VERY IMPORTANT: Write down the recovery phrases, in case your hardware wallet is stolen or broken.
3. Hardware wallet will generate an address.
4. Send all your bitcoins into the address given by the hardware wallet.
5. Keep hardware wallet in the safest place you can find, like in a household safe.
6. Ta-da! You're done.

What this means is, instead of the online exchange/wallet provider generating the address and the public/private keys on your behalf (which means they know all those private keys), now the private keys are generated directly by the hardware wallet, offline.
Nobody knows the private keys except the person who is holding the hardware wallet.
It is practically impossible to hack or steal your bitcoins because hardware wallets are not connected to the internet.
But of course, like I said, you need to keep the hardware wallet safe, so it is not stolen. Anyone who has control over the hardware wallet, controls all the bitcoins stored there.
Always keep in mind: bitcoins = cash.

Good luck!  thumbsup.gif
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Wow... It means that the hardware wallet has address and only 1 address is used?

Which hardware wallet is respectable and worth to buy?

Is there any bitcoin provider that allows you to keep the private key by the owner so no private key is stored with them via online?
jack2
post Feb 19 2017, 12:13 AM

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QUOTE(wengherng @ Feb 19 2017, 12:05 AM)
Some hardware wallets do allow you to set a PIN as a password to access it, but also many that do not.
I suppose you are referring to the famous Mt. Gox incident, but since then, there were quite a number of exchanges that got hacked to various degrees, and many lost a significant amount of bitcoins.
One thing to ponder about: the more famous the exchange, the more users it would have, and consequently the more bitcoins it would have. That would make them the prime targets of hackers, as the potential returns are astronomical. With the level of sophistication of hackers these days, it's only a matter of time before they find a fatal flaw in the security system and gain access.
Different hardware wallets handle this differently, but usually they would be capable of creating several different accounts and private keys.
Personally, I use Coolwallet, which is capable of having up to 5 separate accounts, with each account capable of generating practically an unlimited number of private keys.
But there are many good brands out there, such as Trezor, Ledger, Keepkey, depending on your objective, budget and preference.
There are many online wallet providers that claim to provide secure wallets with multiple factors of authentication, and many now claim that they themselves do not have access to your private keys......but being the paranoid person that I am, I just do not trust them.

Check out this webpage for more basic information on the various types of wallets.

https://www.buybitcoinworldwide.com/wallets...ardware-wallets
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The one I am using has two authentications I.e. login via email approval and SMS code.

And then, inside the wallet, it has dunno what wallet that is unable to send Bitcoin outside and allows only to receive. In order to send it, need own private key but if I lost it, I won't be able to recover. Thus, I afraid to transfer it to that wallet.

I need to read more their FAQ to get it.
jack2
post Feb 19 2017, 08:54 AM

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QUOTE(wengherng @ Feb 19 2017, 01:59 AM)
Sounds like blockchain.info?
Anyway, it doesn't matter which wallet you use, the concept is the same.
The most important thing to remember is that bitcoins=private keys=cash.
Each type of wallet has its pros and cons, and you have to decide for yourself what level of security you need, in order to feel comfortable.
The more secure and private, the higher the responsibility you must assume yourself to take care of your private keys.
You are your own bank, no one else can access your funds......but if you lose your keys, no one else can help you recover them either, and they will be gone forever.
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Ya, blockchain.info. Are they good enough?

Coolwallet = USD119... cry.gif

jack2
post Feb 19 2017, 09:17 AM

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QUOTE(sirxl @ Feb 19 2017, 09:07 AM)
use wallets like airbitz or mycelium to keep your private keys safe.
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So I have to register new account with airbitz or mycelium or just transfer from blockchain to new address only without registration?
jack2
post Feb 21 2017, 01:03 PM

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QUOTE(kmarc @ Feb 21 2017, 12:40 PM)
Damn you bitcoin. You're going up too fast. Please come down a bit. sad.gif
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Wow.. it is so high now... happyyyyyyyy
jack2
post Feb 21 2017, 10:28 PM

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QUOTE(kmarc @ Feb 21 2017, 03:34 PM)
Lucky you didn't sell to me tongue.gif

Oh no, increase some more!!!! sweat.gif
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yaya


QUOTE(sirxl @ Feb 21 2017, 09:29 PM)
and we say Moon...
crazy jump today.
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icon_rolleyes.gif

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