Latest posts of: Abdussamad

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1461

Bitcoin / Electrum / Re: Electrum contains Trojan

on: July 28, 2017, 11:02:12 AM

your screenshot doesn't show up. upload it again and link us.

1462

Bitcoin / Electrum / Re: how do i backup electrum wallet on several usbs ?

on: July 27, 2017, 12:17:34 PM

Use file menu > save copy to save a copy of your wallet file.

1463

Bitcoin / Electrum / Re: Amount transferred from Platform not Equaling Electrum

on: July 26, 2017, 03:32:25 PM

you can switch units via tools menu > preferences

1464

Bitcoin / Electrum / Re: Bounty [Electrum Wallet]

on: July 26, 2017, 12:33:08 PM

Quote from: altohapa on July 26, 2017, 10:47:31 AM Is it that hard to decrypt? This question has already been answered above. If you have some idea of what the password is you can try gurnec's btc recover script or use a 3rd party service walletrecoveryservices (who you're waiting to hear from). If you don't know what the password is then you can't bruteforce it and your money is lost. I'm just stating for the record that the password that you set isn't just for show. It actually encrypts the wallet's secrets (the seed + any imported private keys).

1465

Bitcoin / Electrum / Re: Bounty [Electrum Wallet]

on: July 26, 2017, 10:32:26 AM

Quote from: altohapa on July 26, 2017, 09:36:44 AM P.S: The wallet is not encrypted The seed is encrypted.

1466

Bitcoin / Electrum / Re: Regarding the release 2.9.0

on: July 25, 2017, 10:53:22 AM

There could still be a segwit2x fork a few months down the road.

1467

Bitcoin / Electrum / Re: Electrum doesn't run from Terminal anymore

on: July 24, 2017, 07:37:36 PM

This problem has been resolved on reddit: https://www.reddit.com/r/Electrum/comments/6p6za9/electrum_doesnt_run_from_terminal_anymore/ OP shouldn't have created threads on multiple forums. Randall88 can you please close this thread so that people don't waste their time answering your question?

1468

Bitcoin / Electrum / Re: Electrum Questions

on: July 24, 2017, 11:49:42 AM

Quote from: btc78 on July 24, 2017, 10:29:16 AM I'm using version 2.7.18 and I have a noob question. Why I'm seeing a lot of Addresses on the Receiving? And what does it mean? can I used those different address to accept payment? Thank you in advance. https://bitcoinelectrum.com/frequently-asked-questions/#why-does-electrum-give-me-a-different-address-everytime

1469

Bitcoin / Electrum / Re: I've installed Electrum - what do I need to do to keep is safe?

on: July 24, 2017, 11:49:09 AM

you don't have to do anything else.

1470

Bitcoin / Development & Technical Discussion / Re: Off-chain proof of commitment for Bob to pay Charlie before Alice pays Bob..?

on: July 24, 2017, 05:37:22 AM

Quote from: luv2drnkbr on July 23, 2017, 09:44:24 PM Quote from: Abdussamad on July 23, 2017, 10:45:30 AM lightning wouldn't be very useful if this wasn't possible: https://en.bitcoin.it/wiki/Hashed_Timelock_Contracts Thank you for that extremely helpful post! Now my next question is, how do you do that off-chain. The whole point of going from A to B to C to D is that they are all connected to each other via previously opened payment channels. If you have to make a new address and thus a new payment channel which incorporates the hashed secret, then you have to make an on-chain transaction, and Alice might as well just open the channel directly with Dave, rather than going through Bob and Charlie. The assumption here is that on-chain transactions are costly, and thus Alice greatly prefers to go through existing payment channels without needing to open another one. So is there a way to use segwit to accomplish this with already opened channels? I can require some information by having it be the solution to a separate input, and my own input is signed with SIGHASH_ALL locking that input requirement in... except that lightning channels require SIGHASH_NOINPUT. What kind of payment channels are available where I can add a hash lock condition on an update to a pre-existing channel? It doesn't have to be on-chain. The blockchain is only used in case of a dispute between the parties involved. In that example they say dave claims his payment by broadcasting a transaction on-chain and in doing so reveals the secret allowing bob to get paid too. But in practice dave would simply reveal the secret to bob off-chain and keep the payment channel open for future transactions. Also you should read the official lightning docs section for HTLCs because it's a little more complicated than that in practice: https://github.com/ElementsProject/lightning/blob/master/doc/deployable-lightning.pdf

1471

Bitcoin / Development & Technical Discussion / Re: Off-chain proof of commitment for Bob to pay Charlie before Alice pays Bob..?

on: July 23, 2017, 10:45:30 AM

lightning wouldn't be very useful if this wasn't possible: https://en.bitcoin.it/wiki/Hashed_Timelock_Contracts

1472

Bitcoin / Electrum / Re: Restored from seed wallet...

on: July 23, 2017, 08:13:21 AM

Quote from: AgatioX on July 23, 2017, 07:30:53 AM Im trying to get free STR coins but they need a signed wallet ofc. There was no warning in Electrum that my wallet will be little bit broken after seed restoration. Well now I have to make new wallet ,move BTC again and pay huge today's comission again. In crypto it is soooooo easy to get ripper for money if you try to move You have a lot of misconceptions. First of all it doesn't matter what wallet you use when it comes to multisig addresses you can't sign messages with them. That's because a multisig address is the hash of a script not the hash of a public key and there is no established standard for signing with a multisig address. Now you chose to create a 2fa wallet which has multisig addresses. No one forced you to do that. You could just as easily have created a standard wallet and had no problem signing messages with its addresses. Second by commission do you mean bitcoin network transaction fees? Those are pocketed by miners not Electrum developers. Bitcoin network transaction fees have gone down a lot in the last few weeks so it won't be as expensive as you think. The only fees that Electrum gets are for 2fa wallet transactions but you agreed to those when you created the wallet.

1473

Bitcoin / Electrum / Re: Restored from seed wallet...

on: July 23, 2017, 02:53:34 AM

You can't sign messages with a multisig address (which is what a 2fa wallet address is). There is no established standard for that. If you're trying to claim tokens then search this forum for previous discussions on the subject. Or ask the developers of the token for advice on what to do.

1474

Bitcoin / Electrum / Re: Electrum GUI does not start update update 2.8.2 -> 2.8.3 on Ubuntu Linux

on: July 23, 2017, 02:46:53 AM

Yes this is a bug. Sometimes the blockchain_headers file gets corrupted. If you want to pursue the matter you can post a bug report about it on github. But first see if you can reproduce it by replacing the blockchain_headers file with the corrupt one and running electrum.

1475

Bitcoin / Electrum / Re: Security of Linux pip2 install electrum: Is it safe?

on: July 23, 2017, 02:28:49 AM

you have to verify it yourself. i wrote a script that downloads, verifies the tarball and does the install for you: https://github.com/BitcoinsPakistan/electrum-install

1476

Bitcoin / Electrum / Re: "micro-seed" for a single address

on: July 22, 2017, 01:47:20 PM

Quote from: reee on July 21, 2017, 09:25:14 PM mmh, i read that the number of possible private keys is 2^256 (because bitcoin keys are 256bit long). So we have: 1626^x=2^256 solution is: x = 23.99899907 so 24 words for a single private key. Electrum uses only 13 words for many keys Electrum used to have a dictionary that size in the past. Now the dictionary is of 2048 words and typical seed size is 12 words. However 1 of those 12 words is used to encode meta data such as the seed version, wallet type and a checksum. The 11 words that you have available allow you to encode a 124 bit random number. However the author believes that even the meta data cannot be guessed and an attacker would have to brute force it just like the rest of the seed so he believes in reality its more than 124 bits. You're fundamental point that the seed has less entropy than the private key is correct. But 124 bits is considered secure so it doesn't matter much. If you want a smaller or larger seed you can actually generate one using electrum command line options: Code: electrum help make_seed will tell you more.

1477

Bitcoin / Electrum / Re: "micro-seed" for a single address

on: July 22, 2017, 11:28:43 AM

Quote from: reee on July 21, 2017, 04:54:15 PM Would it be feasible to generate a "micro-seed" to "memorize" the private key of a single address? Now there is a seed of 12 words that can be use to recover a wallet with many addresses. So I thought, with 2-3 words it would be possibile to recover a single address? Or it would need more words? Are there some services that do this? I know there was "brainwallet" but it wasn't secure. A single private key is 256bits and you can't represent that in 2-3 words. You can't even represent it in 12 words. The 12 words of an electrum seed only gets you 124bits of entropy.

1478

Bitcoin / Electrum / Re: Help! Electrum saying unsupported seed version

on: July 21, 2017, 03:55:53 AM

Quote from: AnimalHungry on July 20, 2017, 08:35:01 PM Quote from: Abdussamad on July 20, 2017, 08:29:58 PM this forum is not for electrum ltc. it is for electrum btc. electrum ltc is made by other people who have no connection to the devs of electrum btc. Thanks. Where should I post my question then? Please feel free to move it. Cheers Simon I'm not a mod so i can't move this thread. You can see the forums for litecoin electrum on their website: https://electrum-ltc.org/#three

1479

Bitcoin / Electrum / Re: Help! Electrum saying unsupported seed version

on: July 20, 2017, 08:29:58 PM

this forum is not for electrum ltc. it is for electrum btc. electrum ltc is made by other people who have no connection to the devs of electrum btc.

1480

Bitcoin / Electrum / Re: How to find my Electrum wallet see

on: July 20, 2017, 02:24:46 AM

if you have your private keys you can create a new electrum wallet with them. Here are instructions for how to do that on a PC: https://bitcoinelectrum.com/importing-your-private-keys-into-electrum/ Here are answers to some of your other questions: Each address has a different key pair behind it. Private and public keys. The public key is derived from the private key and is mathematically related to it. The address is derived from the public key. Private keys are not the same as public keys. Private keys are secret while public keys are not. Knowledge of the private key allows a person to spend money sent to the corresponding address. You can see what private keys look like here: https://en.bitcoin.it/wiki/Private_key#Base58_Wallet_Import_format . Addresses are shorter and begin with 1 or 3 https://en.bitcoin.it/wiki/Address. Public keys are large hexadecimal strings ( case insensitive 0-9,a-f). Watch-only wallets don't have private keys in them so you can't spend from watch-only wallets. All private keys in an electrum wallet are derived from the seed. Therefore backing up the seed allows you to recreate your whole wallet.

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