Just restart bitcoind with the -zapwallettxes argument. This removes all of the transactions from the wallet and rescans from the beginning so that it will remove the unconfirmed transactions. You should then be able to respend those Bitcoin.

This is normal behavior. After a few days, the network "forgets" unconfirmed transactions due to the natural node restart cycle which clears the node's mempool which contains the unconfirmed transactions. If it is "forgotten", then you should see the Bitcoin back in your wallet and be able to resend it, but this time with a fee.

No. Full nodes provide the entire blockhain and all transactions that they receive and accept. That is the information they provide, not the information if the nodes that connect to them.

Bump.

Bump.

A lot of newbies make that mistake and it is very problematic that they do.

I suggest using a desktop wallet not an online one. I recommend that you use Electrum.

There is the Bitcoin blockchain and the service called blockchain.info, two entirely different things. You are emailing the service called blockchain.info which is completely different from the bitcoin blockchain.

What the hell are you talking about? Electrum is a wallet software for BITCOIN. It is not an altcoin. Please stop spamming.

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You can just send the entire balance of your wallet to a single address and you generate from your wallet.

Sure. Just pay a higher fee.

And yes there is work to increase scalability which in theory will allow more transactions to confirm and reduce fees by increasing block capacity. Segwit is being worked on as are hard forks to increase the block size limit.

But the only real way to guarantee that your transaction confirms in a timely manner is to pay a high enough fee.

There is no "your" here. There is no central governing body and there is no one person or group which controls Bitcoin.

Because there is no one central group that owns and controls Bitcoin, there is also no support for anything. People can help you here, but there is no official support for Bitcoin, just support for software that uses it.

Best platform for what? There is only one Bitcoin. What kind of platform are you looking for.

The price of a Bitcoin is determined in the same manner that everything that is traded is determined, by supply and demand. This is exchange specific, like how the price of a stock or a foreign currency is specific to the exchange on which you are trading. The price changes rapidly because people are trading at different prices and the prices are reflected as these trades happen. The same happens with stocks and currency trading.

What ewallet? There is no one Bitcoin wallet, and there is no "official" Bitcoin wallet nor is there an "official" website.

It depends on what wallet you are using. If you use an online wallet with an exchange, then you may be able to have different currencies. However, the vast majority of desktop wallets only support one currency. For Bitcoin, they support Bitcoin. For other altcoins, they only support that altcoin.

It depends on the wallet. If the transaction is unconfirmed, some wallets may not show it. Other wallets will. For the money to become secure enough to be spendable, you will have to wait for at least 1 confirmation, and that usually takes about 10 minutes.

Payout process for what? To pay Bitcoin to multiple people, you open the wallet software and enter the Bitcoin addresses for all of the people you want to pay and the corresponding amounts and the software will create the transaction for you. Usually you will have to pay a large transaction fee so that the transaction will confirm quickly.

I highly suggest that you try to do some research to understand Bitcoin. You can read some of the stuff at https://bitcoin.org and at the Bitcoin wiki: https://bitcoin.it. These are all good sources of information. If you ask more questions, please be as specific as possible.

What prevents me from spoofing my bandwidth usage by connecting with another device that appears like it isn't mine but actually is? Then I use a lot of bandwidth and get rewarded a lot of coins.

Any address that contains bitcoin and any address that you want to have in your new wallet.

No there is not. The only software which is capable of importing the wallet.dat file is Bitcoin Core.

That address is just any address that you have used that has Bitcoin that you want in Electrum. If you don't have any such addresses, then exporting the private keys is not necessary as you have not used any addresses.

Yes.

Start Bitcoin Core. Go to Help > Debug Window > Console. In the text box at the bottom type
Where <address> is the address which you want the private key of. The output should be in black and be a single string that starts with a 5, K, or L. This is your private key.

DO NOT SHARE YOUR PRIVATE KEY WITH ANYONE. ANYONE WHO HAS YOUR PRIVATE KEYS WILL BE ABLE TO SPEND YOUR BITCOIN.

Do that for all of your addresses.

Then start Electrum. You can either import your private keys or sweep them. Importing means you will still use the same addresses, sweeping will simply move all of the Bitcoin to an address in the Electrum wallet. I recommend you sweep.

To sweep, create a new normal Electrum wallet. Make sure you record the wallet seed. Then when the wallet is made, go to Wallet > Private Keys > Sweep. Enter all of your private keys, one on each line, and the wallet will automatically sweep the Bitcoin into your wallet.

To import the private keys, go to create a new wallet but instead choose "restore a wallet or import keys". Click next. In the box, enter your private keys, one on each line. Follow the rest of the instructions and you will have created a new Electrum wallet with your keys imported.

If you want to continue to use Bitcoin Core, then yes, you will have to wait for it to finish.

There is no way to bypass reindexing. It is a part of how Bitcoin Core works. You can move to another wallet, but the wallet files are not compatible so you will have to export the private keys and import them elsewhere.

xpub keys are BIP32 extended keys. Armory does not support BIP32 yet and thus does not produce these keys.

Somewhere around here: https://botbot.me/freenode/bitcoin-core-dev/2016-05-26/?msg=66783313&page=3

They want to get Segwit merged in before the 0.13 feature freeze which is scheduled for 6/16 (https://github.com/bitcoin/bitcoin/issues/7679). If that gets merged, the backport to 0.12 should be around the same time. The release should then be out just before the halving.

As of now, no. The new forum software will be mobile friendly though. There are also a few apps for the forum but they generally don't work very well. I made one a while back and you can find it in the project development section somewhere, but I have stopped working on it.