Latest posts of: Abdussamad

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1461

Bitcoin / Electrum / Re: Electrum 2.9 was released today

on: July 28, 2017, 04:04:29 PM

Quote from: bitkokos2 on July 28, 2017, 01:10:23 PM I have electrum portable version but never used it to deposit coins. I have the seed and password but I want to have a fresh one. How can I completely remove it and get a new seed? Also, if I deposit coins to portable electrum will they be safe after SegWit etc ? Will I need to do anything other than just sending the coins and setup a password? Thanks your wallet file should be in the same folder as the portable executable file. move, rename or delete it. then run electrum portable again and it'll show the new wallet creation wizard. your coins will be safe in electrum even after segwit activation. you don't have to do anything other than noting down the new seed. setting a password is good too.

1462

Bitcoin / Electrum / Re: Electrum 2.9 was released today

on: July 28, 2017, 11:31:07 AM

You've said in the past that bip39 support in electrum could not be guaranteed. I thought that meant it was a deprecated feature. Yet here you've added support for custom derivation paths when using bip39 seed mnemonics so does that mean that bip39 support will not be dropped in future?

1463

Bitcoin / Electrum / Re: Cannot encrypt Wallet file

on: July 28, 2017, 11:08:22 AM

no no need for sudo. start electrum from a terminal and repeat the process of whole wallet file encryption. electrum will post debugging messages in the terminal. upload those onto pastebin.com and share the link here so we can take a look.

1464

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.

1465

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.

1466

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

1467

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).

1468

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.

1469

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.

1470

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?

1471

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

1472

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.

1473

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

1474

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

1475

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.

1476

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.

1477

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.

1478

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

1479

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.

1480

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.

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