All of the options you suggested are good, but paper wallets are the most risky one I think. They can easily be damaged or become unreadable.
You should always make a few backups, no matter you are using paper wallet, bitcoin-qt or multibit.  You could then store them in several different safe places. |
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He has 8 Garden Blade Miners. They seem to power up OK, but I can not for the life of me log into them. I have scanned every IP after setting them up on a private net from 192.168.0.0 to 192.168.255.255 and I can not find the damned things. IP listed on the sticker is 192.168.1.201 port 10000.
Dose anyone know anything about them, or how to default them to factory settings, and what the factory default IP would be so we could get into them and set them up?
I have completely no clue on this, but I found this setup guide for you ( http://eastshoretrade.blogspot.com/2014/01/setup-tutorial-btc-minergarden-8gh-asic.html) with google search. |
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If you want to mine for fun, you could buy a cheap USB ASIC to mine bitcoin or use your GPU to mine scrypt altcoins.
But if you want to mine for profits, I am afraid that the best day has already passed and it is very hard now just to break even.
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Hey guys, I bought a few bitcoins lately and am now wondering what is the safest way to store them? Is it enough to store them on a multibit-wallet, with the private keys backed up on a few usb-sticks? Or should I use Armory or something? Or even a paper-wallet? I just want to be ~99% sure not to lose my bitcoins, it's not much, but worth a lot to me  Paper wallet correctly generated, with BIP 38 encryption is the safest IMO. Using multibit is alright as long as your machine is free of malware and hacking. |
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Welcome to bitcointalk, jackstar. Where are you guys located? We will soon be launching our new online store accepting bitcoin for our stones and services.
Please update us when it is opened |
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Indeed, the most hashrate you have, the more likely the attack will be successful. It is possible to launch a so-called "51% attack" with 40% network hashrate, but with a much lower success rate. FYR: https://en.bitcoin.it/wiki/Weaknesses#Attacker_has_a_lot_of_computing_powerAttacker has a lot of computing power
An attacker that controls more than 50% of the network's computing power can, for the time that he is in control, exclude and modify the ordering of transactions. This allows him to:
Reverse transactions that he sends while he's in control. This has the potential to double-spend transactions that previously had already been seen in the block chain.
Prevent some or all transactions from gaining any confirmations
Prevent some or all other miners from mining any valid blocks
The attacker can't:
Reverse other people's transactions
Prevent transactions from being sent at all (they'll show as 0/unconfirmed)
Change the number of coins generated per block
Create coins out of thin air
Send coins that never belonged to him
With less than 50%, the same kind of attacks are possible, but with less than 100% rate of success. For example, someone with only 40% of the network computing power can overcome a 6-deep confirmed transaction with a 50% success rate.
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Are they having problems? Does it work for you?
No idea about 2FA, but it seems the site is having some issues at this moment as I can't search for any transaction there... |
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If I see an altcoin that I think has potential, but is lightly traded, would buying it through an exchange jack the price up like shares of common stock?
Bitcoin or altcoin exchanges work pretty much like stock exchanges, and the "market price" is determined through order matching. So, if you place a big buy order, the price will be affected. If so would setting up a wallet be the way to go?
Setting up a wallet won't give you any coin. You could get coins from mining or doing p2p trades. |
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I think he wants what blockchain.info supports messages in the blockchain. You can do this with blockchain.info wallet but it is only visiable on their site, it isn't a feature of bitcoin.
He could use OP_RETURN to include a short message on the blockchain (not the site blockchain.info), but he will need to play with raw transaction (please be extremely careful!). You can see people have been doing such thing already. http://coinsecrets.org/ |
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How? And how can someone see it?
You want to sign a message with your address (more correctly speaking, your private key)? Or you want to attach a message to your tx? |
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Does anyone knows when the custom avatars will come back ?  Probably not before we have the new forum software (which is at least 9 months from now)... |
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There's a number of ways you could improve this forum, but one of the easiest places to start would be to reject any post that includes a full-post quote. Interesting. Indeed, about a month ago, someone suggested only "full-post" quoting should be allowed to prevent people making up stuff in the quotes, such as: (just for illustration  ) I love bitcoin You can find the thread here. https://bitcointalk.org/index.php?topic=577649.0 |
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I am new to this new currency, can someone suggest me some websites to learn more about it?
~ranochigo
Every bitcoiners should read the whitepaper prepared by satoshi You can find it here. https://bitcoin.org/bitcoin.pdf |
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I've spent unconfirmed transactions in Bitcoin-QT before and it took like 3 days for all the tx's to confirm even with a fee.
In bitcoin-qt version 0.9.0+, you could stop spending unconfirmed changes in option->wallet. I don't know how it happened but I already did this twice. Normally MultiBit says I don't have enough balance to send before the received coins get at least 1 confirmations but sometimes it doesn't happen. It happened to me twice, I sent the coins instantly after I received them with 0 confirmation. Then I checked on Blockchain and both the income and output of my new address were Unconfirmed until they both received confirmation at the same time.
Now my question is if this is intended in Multbit or a bug? If it's intended why can't I always do it? Is there an option to spent unconfirmed coins in Multbit?
No idea about Multibit. |
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Never keep as much online as you can afford to lose. Just remember Mt. Gox.
Only relatively safe spot IMHO, is blockchain.info with 2FA enabled. I use it as a "hot wallet" for spending.
Blockchain.info is slightly different from exchanges like mtgox and bitstamp. For exchanges, you don't have the private keys and so if the site is gone, all your bitcoin would be gone. For blockchain.info, you have the private keys, and the site only keeps an encrypted copy of your wallet file. The encryption and decryption are done on client side, and so even if the site is gone or hacked, your bitcoin should still be in your hands provided that you have made backups. |
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Well "Believe me" IF I did know about this, back then, and I figured out early enough, about the potential of Crypto Currency, I would have been into this, with everything I had.
I believe most of us here wishes that we have heard of bitcoin earlier and have bought bitcoin in the early days. |
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2018, just my pure speculation. BTW, MtGox blew the price up to 1200$ with 2 bots
Yup, and in case someone is confused what he is talking about, feel free to check http://willyreport.wordpress.com/ |
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I know It's allowed to sell/buy bitcointalk forum accounts but I have a question If It's allowed to rent a bitcointalk account for a specific time?
The borrower could do stupid things with the account and make it full of negative trust feedback and make it worthless. The lender could claim the account has been hacked and send theymos a message signed by an address used earlier and get it back. Either way, it is not going to end well. |
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