There should be a transaction ID, that looks somewhat like this 224d7baa8f57b5b7f275b671e7d412089b90bf4f061456729aff9ec373dac448

If you go to https://www.blocktrail.com/BTC/ and enter your transaction ID into the search box it should show your transaction (with your addresses). If it does not, the transaction still needs to be broadcasted.

If the electrum wallet does not show it, try closing and reopening it. Sometimes this only works once the transaction is confirmed.

They are covered by the seed, yes. So you will not lose anything.

However if you restore form the seed in one, two or maybe five years. Will you remember the gap limit you set? Because the gap limit is the number of unused addresses that are derived from the seed.

In your example you now have 200 addresses in your wallet. If you only use the last 150, there will be 50 unused addresses at the "begining". Electrum will stop after 20 and show you an empty wallet.

As you keep that in mind there is nothing to worry about.

Name one.


No, a difference source for random numbers is not the solution to a good algorithm that can caluclate the private key from a public key. If you have a good source of entropy and generate a private key with it,but I am able to find any private key given the public key. How is that going to help you?

You can only transfer them to a seeded wallet via the network. It is possible to pay no transaction fee when creating a transaction for the network, but its usually not a good idea. As ranchigo said, you need "priority" to get a transaction without fee confirmed. Bitcoins gain priority over time. Your 0.01 will roughly have the needed priority after 100 days. To avoid that the transaction is "in limbo" its better to pay a fee as electrum suggests. There is a setting called "dynamic fee" you should enable it. It estimates the lowest fee without a risk to get your transaction stuck.

If your fee is too low there is a chance that the transaction takes a long time (days) to confirm. E.g. the 10,000 transactions currently waiting for a confirmation.

Firstly sha256 is not an encryption algorithm, its a hash.

Bitcoin mining is done with sha256d (sha256(sha256(data))). There is no reason to believe that quantum computers are more efficient at calculting sha256d than ASICs. Lets just assume they are 100 times better anyway. What would happen? We would have a difficulty increase. For a short time blocks would be found quicker, afterwards everything would be back to normal. This is even true should QC be 2¹²⁸ times faster, but it might still be a good idea to jump to a different hash function if the difficulty becomes to high to grow further. In this case it would require new specialized hardware. I dont think we will ever go back to GPUs.


Nope.

Step by step:

#1 File -> New/Restore
#2 Enter a name, confirm with "OK"
#3 select "Restore a wallet or import keys" and "Standard wallet", confirm with "Next"
#4 Enter the private key(s) in the box, confirm with "Next"
#5 Set password, confirm with "OK"
#6 Let it snyc. Its done when the red dot bottom right turns green. This should only take a few minutes.

You can create a new wallet that is covered by the seed while keeping the above temporary wallet open. Steps #1 and #2 are the same,
for #3 select "Create new wallet" and and "Standard wallet", confirm with "Next"
#4 write down the seed, confirm with "Next"
#5 confirm the seed
#6 set password
#7 let it generate addresses
#8 Go to "Receive" and us the address shown to send all your coins from the other wallet to it.

Did this break your live demo?

Maybe the brackets cause confusion?

An example


be careful to not show the private key to anyone. Once its imported into electrum you should transfer it to an electrum wallet that is covered by a seed.

thanks, updated -> http://pastebin.com/StX3pBE8

I was questioning the general rule GannickusX implied. For a specific example it might be true, but as you say you have to look at more (e.g. the posts and when they where made) than just activity and post count.

I left a negative rating, any idea how this happened? Was your machine infected by malware or does anyone else know your password?

That was exactly what I was hinting at. I dont know why jackg claims that .info could not be involved when everything points at them.

That made me chuckle a bit.

Anyway, on topic. Yes, I downloaded the whole blokchain several times on several systems. It took my VPS 4-5 days with a 100Mbit/s conneciton, but its bottleneck is the CPU. A 4. Gen i5 with SSD on 32MBit/s downstream took ~a day IIRC. I also started syncing an old single core laptop for armory but stopped after a few days because it was not making much progress with the verification and database building for armory.

I never had issues with just signrawtransaction <rawtxdatahere>.

Decoding the TX it seems that the TX ID 08560f2b5b1e214536b95280bd184b680561f52fcedc375af980b9b529897f4b
is not known to the network and 90d2b6545bfdf33200affd690e929ba256d72c531ffc2e50dfe9810e8a861151 is spend.

So Im not sure if there is another priv. key involved for the TX 0856..., but from the error it looks like the TX was only partially signed.

It also seems that the TX you got working uses only one input -> https://www.blocktrail.com/BTC/tx/7e5988703186c5caeac810ffe7c77a659a7bd9db18f6b8c6545a9230a55871d3?txinIdx=0

Its already part of the latest pastebin by Lutpin, it will be in the OP soon.

I get that, but I am not sure if you understand why. You have no attack scenario so you cant properly judge the defenses. As SebastianJu pointed out, if are rich enough to set up a bunker + guard for your bitcoins you will have to consider attackers willing and able to cut your fingers off[1]. It does not even make sense to compare #9 to #1.

Anyway, I will not further pester your thread with my criticism.

[1] http://news.bbc.co.uk/2/hi/asia-pacific/4396831.stm

#1 thats not proof.
#2 how come the site went offline so quickly after the scam was discovered if its legit?
#3 how come the person running the campaign was never seen again if its legit?

So the videotape is protected better than the room with the computer?

Most issues can be solved by paying a higher fee than everyone else. If the fee you pay is high enough for miners to give you a priority over other transactions and include you in the next block, you dont have to care about the spam that holds transactions with a lower fee back.

Most advances in "breaking" crypto come slowly. You can e.g. look at the history of RSA and see that even until now, longer keys are a solution. It will not be forever, but there will be enough time to migrate to a quantum hardened algorithm.