--snip--
Generally, yes. You are definitely right.
But imagine the scenario of a good 'friend' who does want to steal your funds. He probably won't just come to you and force you to give him your money.
This mostly does not only refer to friends, but to anyone who you know personally and who can't risk being recognized by you (legal actions, personal data known, etc.. ).
I don't want to get caught up in the semantics of this discussion, and in theory you are 100% correct. The only thing i can say is that in my personal case (and i hope i represent most average users), i can honestly say i've never created an unencrypted paper wallet, created a hardware wallet without a strong pin, left a desktop wallet unlocked while i was no longer using it, left my seeds just laying about... So i guess somebody that legitimately entered my house would have a rather hard time getting his/her hands on my funds. I guess (in my personal case), the seed phrases would be the weakest link, i'm going to move them to my banksafe pretty soon . I think in my personal case, i would fear the $5 wrench attack a lot more than the cleaning lady or one of my neigbors finding my wallet's seeds. ~snip~ - TRUSTED, up-to-date desktop wallets on a CLEAN up-to-date pc => good for small amounts (think: a couple hundred bucks in FIAT value equivalent)
~snip~ - desktop wallets => good for large amounts
I guess a small mistake has slipped in there. It should be hardware wallet => good for large amounts instead of desktop wallet, i think ? yup  Fixed the typo, thanks for the heads up |
|
|
|
--snip--
It's always worth noting to newbies that airgapping is most ideal in Linux than in Windows, for obvious reasons, including avoiding a plethora of malware and other assorted threats.
Even if your computer is airgapped, and has never touched the internet since you installed the OS, you still can get a virus via USB, CD, etc, so dealing only with open source software will always reduce these possible exploits by a big %.
Look into Ubuntu or Lubuntu if your computer is very old. You can always use Xubuntu as a good balance between performance and aesthetics.
--snip--
You could set up a webcam for the offline pc and use that to load the tx rather than using a USB flash drive. A much more secure method this is, as you know for a fact that only the tx is being transferred.
--snip--
The only difference is that i have mentioned a CD which will be destroyed, but thats related to the whole (second) point of my post.
It is still worth to note that this also does NOT mean 100% security.
An attacker could foist you a malicious version of a QR code reader, which will modify the transactions on transmission.
This, of course, is a very unrealistic attack vector. But the possibility does still exist. Especially if people have access to your offline machine (assuming the machine is accessable and the private keys are encrypted).
You guys are all making excellent points, but i personally feel we're going into a paranoid level of semantics here. IMHO, the odds of a $5 wrench attack is significantly higher than the odds of running into somebody that tailored an attack against these attack vectors (i could be wrong tough, but that's my gut feeling). I think the most important thing the OP and other newcomers should remember about this thread: - web wallets => not good
- exchange wallets => not good
- mobile wallets => only for very small amounts (spending money: enough to buy a couple cups of coffee if you stumble upon a place that accepts BTC payments)
- TRUSTED, up-to-date desktop wallets on a CLEAN up-to-date pc => good for small amounts (think: a couple hundred bucks in FIAT value equivalent)
- properly generated paper wallets => good for large amounts
- airgapped wallets => good for large amounts
- hardware* wallets => good for large amounts
IF they're ever managing a BTC value whose FIAT equivalent they can't earn in a month, it *CAN* be a good idear to spread their funds over several trusted wallets IF they're ever managing a BTC value whose FIAT equivalent they can't earn in a year, they should talk to a specialist that can walk them trough all kinds of paranoid scenario's they can protect themselfs against  * thanking bob123 for discovering my typo |
|
|
|
I've seen this question pop up dozens of times. Personally, i don't think 2fa will be implemented on this forum. The reason why i don't think it'll ever be implemented is because a new forum software is being developed. If i'm not mistaking, this new forum software (epochtalk) will have a very big choice of 2fa mechanisms available. I personally think the admin won't put a lot of effort in the old script anymore. That being said, the new forum software's release data is being pushed foreward for years now. Nobody knows when (and if) it'll ever be released. We're stuck between a rock and a hard place So sir you mean thier will be more features when the new software are updated ? So what will happen to the old script it will be vanish or not ? What will happen to our account it remains the same ? I haven't looked at epochtalk's progress for a long, long time... But if i remember correctly, the plan was/is to convert all accounts and all posts, import them into the new script's database, then switch from the old bitcointalk to the new epochtalk. At this point, the old script will probably be decomissioned. For the enduser, the whole process should be more or less transparent. Sure, the layout and menu's will look completely different, the feature set will be a lot larger, but all your posts and account info should remain the same. I wouldn't worry about it to much tough, it's not like this switch will happen anytime soon. I just mentioned epochtalk because i believe that this new script is the reason not much development will happen to the old script... |
|
|
|
Brave is relatively trusted... Usually, when your account gets hacked it's one of the following causes:
- re-use of your password
- falling for a phising link
- not changing your weak password after the breach a couple years ago
- a pc that's infected with mallware
If you have a strong, unique password on a clean pc, you're pretty safe.
As for your friend: did he ever posted a bitcoin address in one of his posts or private messages? If so, there is a "standardised" procedure you can follow to sign a very specific message and PM it to Theymos in order to restore your account. That being said, the admins are so overworked, it can take months before he gets his account back (if ever).
Sir theirs no other way in bitcoinforum account to become's fully secured like to put 2fa or other security that hacker's cannot know your password ? I've seen this question pop up dozens of times. Personally, i don't think 2fa will be implemented on this forum. The reason why i don't think it'll ever be implemented is because a new forum software is being developed. If i'm not mistaking, this new forum software (epochtalk) will have a very big choice of 2fa mechanisms available. I personally think the admin won't put a lot of effort in the old script anymore. That being said, the new forum software's release data is being pushed foreward for years now. Nobody knows when (and if) it'll ever be released. We're stuck between a rock and a hard place |
|
|
|
Just use maybe one email account for Bitcointalk you do not use anywhere else!
Be sure to connect to the real Bitcointalk.org, there are a few fishing sites and if you log in there your account login details gets stolen!
Sir i am connected in real bitcointalk.org but it is safe i used brave browser. ? Brave is relatively trusted... Usually, when your account gets hacked it's one of the following causes: - re-use of your password - falling for a phising link - not changing your weak password after the breach a couple years ago - a pc that's infected with mallware If you have a strong, unique password on a clean pc, you're pretty safe. As for your friend: did he ever posted a bitcoin address in one of his posts or private messages? If so, there is a "standardised" procedure you can follow to sign a very specific message and PM it to Theymos in order to restore your account. That being said, the admins are so overworked, it can take months before he gets his account back (if ever). |
|
|
|
Hi guys,
I currently have multiple different address in one wallet, each with a small amount of BTC.
I want to combine all of these into a single address, without having to do multiple transactions (not worried about fees, just the time it will take).
Is there a debug command like 'sendmany' which will allow me to consolidate all the BTC across these addresses into one address?
Thanks
All addresses were generated by the same wallet? Since you're mentioning debug commands, I assume it was a bitcoin core wallet? In this case, it's a pretty easy task, just generate a new address , then use the sendtoadress command, and use the 5th parameter: subtractfeefromamount. If set to true, the fee will be subtracted from the amount. This will allow you to just send the total value of all unspent outputs to the new address without having to look up those unspent outputs, calculate the fee, create a raw tx, sign a raw tx,... All these calculations will be executed by the wallet software. In case you only want to "combine" certain unspent outputs, you can still create a raw tx manually and sign it.. PS: I answered your question since a lot of misinformation was given and your question looked legit, but next time open a new thread instead of posting in a dead one... |
|
|
|
I use blockchain.com. The safest and most popular wallet for investing and storing digital assets. ,but I realise all online wallets are, per definition, less safe compared to trusted desktop wallets on a clean system, paper wallets, hardware wallets and airgapped wallets.
You can use bitcoin wallet on operational system like wallet for Windows, Linux or Mac, but need to dowload all the blockchain transactions unless you chose on of the many SPV desktop wallets. This is waste of time. . However, if you chose to install a full node/wallet like bitcoin core or btcd, you help the network by verifying and storing all blocks, and rejecting blocks/transactions that are invalid. By running a full node/wallet, you depend on no thirth party, exactly as bitcoin was designed.
But better of course the paper wallet it is more safier. I haven't perform yet the transaction from paper. Just done it with dogecoin.
Transaction was performed successfully.
So, it's up to you what to chooseFixed that for youUpon sequest of Wikadin, i scratched my comment. I did this because he edited his post, so it no longer contains errors. |
|
|
|
Hi readers,
Two days ago I have been scammed a message lured me to sent btc's to be rewarded with btc's. Is there a way to undo the payment? I bought with a credit card for the first time btc's and open an Electum wallet where my btc's can transfer to. From the wallet I did the payment to the scammer(s).
output btc 1FWgupudCV4RQtZXhHtN9qPsWgphZFefa5
transaction id: 3d04e9a146ea666433f24579a4452534a05d3c106703a5771d9e97b88e9e92c1
Hope it can be fixed.
Kind regards,
4everfriend
Bitcoin transactions are irreversible.. Sorry to be the barer of bad news, but that's just the way it is. As soon as your transaction ends up in a block, there is no way to cancel it. The only things you can do is open a proper scam report on this forum, so at least other's won't fall in the same trap as you did, maybe try to track down the scammer (depends on the method he used to scam you... Most of the time it's very hard, nearly impossible, to track them down) and last but not least: learn from this experience... There is no such thing as a free lunch. Nobody has a magic method to multiply BTC, nobody will double your money without effort from your side... |
|
|
|
I don't think this random word generator generates words that are bound to the bip39 wordlist? |
|
|
|
Hey, does anybody have experience with the online shop and is able to recommend it?
Greetings
I've never heared about them... No reviews can be found either. On the positive side, they seem to have registered an existing company, however i've seen other registered companies scam before... They use cloudflare's SSL, everybody can use this. For now, i see no hard evidence they're scamming, but there is no proof about they're honesty either... I'd personally proceed with caution and wait untill i see some valid feedback before i buy from them |
|
|
|
What is the most secure way to generate a 12 word seed for a hardware wallet. I would like to also add a passphrase.
Usually, it's best to just use whatever procedure the hardware vendor suggests... The brain is a terrible source of entropy, so whatever method you're using not suggested by the vendor, it's usually worse than just following the proper procedure. This does not mean there aren't good ways to create a 12 word seed yourself, but usually your own methods aren't more secure than the recommanded methods anyway (imho) |
|
|
|
Hello,
Thank you for your reply. Could you give me any hints to send it anonymously (workaround)? I know some of the things like using VPN, Tor etc. But, I am not sure this will solve the issue or not.
Thank you
Well, I'm definitely not going to give a walkthrough, since I these hints can also be used for illegal purposes. But in order to hide your IP, there are vpns, tor, i2p, proxy's, public hotspots. There are also p2p exchanges that can be done to purchase btc. In order to break the link between wallets, there are mixers and anonymous crypto currencies... Or buying coinbase rewards from miners. You can also rent hashrate and mine clean coins directly, or use an exchange that does not require kyc (sometimes kyc is not needed for btc to altcoin exchanges) |
|
|
|
Hello,
I need to send some amount to one person anonymously. That means, the opposite person should not know my identity and source details. For this, I tried to register with Bitcoin provider. But, they are asking my bank account details to fulfill their KYC (Know your customer) norms. I understand and agree that I should give my bank account details to the provider. Once I send the amount through Bitcoin to the other person (Receiver), is there any possibility to track my details through Bitcoin? Is really Bitcoin is the trustworthy to send the money anonymously?
Thanks in advance.
CP
All transactions can be traced. If you buy btc from an exchange that enforces kyc regulations, and directly pay the receiver with the btc you bought, you can in fact be traced. Bitcoin is pseudo anonymous. There are ways around this, but you need to know what you're doing... |
|
|
|
Can someone name trusted bitcoin wallet/s..
https://bitcoin.org/en/choose-your-walletIf you're just starting out, i'd stick to the desktop wallet section, If you're holding a bit more, i'd stick to the hardware wallets, or investigate paper wallet or airgapped wallets. I'd recommand you to stay away from the web wallets. |
|
|
|
As we know each blockchain transaction has inputs and outputs
If all transaction inputs are spent then these inputs doest not contain important information anymore as it will not participate in any future transactions
And we can find blocks that consists of such transactions only and we can remove all this data preserving only block hash
So this means that a blockchain will not grow forever , it will grow forward but closer to the begining blocks can be replaced by its empty placeholders
Going this way we, of cause, lose transactions history but integrity would be ok
Why would the integrity be ok? Very simplistic, if each block contains only 1 transaction: Block 1 coinbase reward funds address 1a creating new unspent output b Block 2 unspent output b funds address 1b creating new unspent output c Block 3 unspent output c funds address 1c creating new unspent output d If every node in the network would prune block 1 and 2 (since all unspent outputs created by transactions in these blocks were now spent), how would the network ever know about unspent output c? It would be impossible for somebody to verify where unspent output c came from... We would just have to assume unspent output c exists, funds address 1b and is valid? If you don't like to synchronise your wallet, you can always use an SPV wallet if you want... |
|
|
|
Please is bitcoin mining network real?...i was asked to create new Blockchain wallet fund it and get it connected to antminerS9
It is real or scam?please dont mind my English
These "mining" services that force you to create a blockchain.info wallet, fund it and pass your wallet info to them are always a scam.In order to fund a wallet (pay you), the only thing somebody needs is an address generated by your wallet... NEVER EVER give somebody access to your private keys, password, unique identifier, wallet file,... Since you've asked this basic question, i'll give you some friendly pointers that relate to this question: - Private keys are private, never share them, never share ways that can compromise private keys (wallet files, seeds, xprv, identifiers, passwords,...). Make sure you don't give other people unauthorised access to your PC so they can steal your wallet (don't install shady software, don't let an untrusted person take over your desktop with teamviewer or VNC,...) - Stick to desktop wallets on a clean pc, airgapped wallets, hardware wallets or paper wallets... Don't keep your funds in an online wallet or exchange - BTC mining is a business, you can't mine using a cpu/gpu/outdated ASIC or if your power price is to low... Cloud mining is allmost always a scam |
|
|
|
Mayor update: the script is now also running on the main net: https://www.mocacinno.com/lightning/The reason for putting this script on the main net is because the only places currently accepting lightning payments on the main net still offer goods that are way to expensive for testing purposes (imho). At this moment, the images on my site cost 50 sat's per step, so for less that 0.0004 USD you can now test a lightning payment on the main net... Waaaay better for testing purses than risking $1 for a simple testrun I'd still encourage everybody to test the LN on the testnet FIRST... My site is only on the mainnet because i've seen a lot of people that are unwilling to run tests on the testnet, and at this moment they're spending several bucks just to try the LN... At this moment, i've just ported the script to the main net, it it untested (for now) since i left my hardware wallet in my bankvault, so it's inaccessible to me at this point in time. I'll pass by the bank tomorrow, fund my mainnet lightning wallet and give the script a testrun
If somebody is willing to do a testrun, the image currently online is just 50 sat/step... I won't reimburse you for trying, i mean: the fee for a reimbursement transaction is more than the testamount, so i'd be wastefull if i'd have to reimburse 50 sat
|
|
|
|
Hi! I've seen this https://satoshis.place/ website. Thus I am looking for a simple guide that would explain how do I pay in bitcoins using lightning network. Does bitcoin core supports this feature? Bitcoin core isn't a lightning wallet... You can run a bitcoin core node and install c-lightning on top of it... C-lightning makes use of your core installation to function. As for a simple walktrough: i made a lightning application on the testnet and wrote a walktrough on how to use it: https://bitcointalk.org/index.php?topic=4559889.msg41080256#msg41080256Mainnet is about the same as the testnet, but i'd encourage you to try LN on the testnet first |
|
|
|
--snip-- Yea, the figures I used was just a thumb suck scenario and probably grossly exaggerated. Most people are not as lucky as you to deduct your home loan payments for tax purposes. You from Europe? / UK / USA / Asia / Africa? Based on last years growth of over 800% in one year from my Bitcoin investment, I would have been able to buy that house from the profit I made in 1 year. <I agree that last year was probably a fluke and that we might never see that again, but what if we do?> Some people are even saying that it would be better to save that money in a Bank at a fixed interest rate.  I'm from the EU... And yeah, i do realise i'm pretty lucky i can deduct my intrest from my taxes In the end, for me it's pretty simple: i have a kid, it's my duty to make sure she has a roof over her head, food on her plate, gets a good education, can go to a doctor when she's ill... I realise that if i'd invested all my money into crypto when i first heared about it, i would have been rich by now, but like NeuroticFish said: it's a high risk investment, and i don't gamble with the health or happiness of my kid. If i'd invested everything into crypto, i could have lost everything, and by now i could have been living in a social housing block. I realise that i missed out on really big profits, but at least my kid will have a house when i'm gone |
|
|
|
We had a very interesting discussion over the weekend and people debated if it was better to invest in property or to invest in Bitcoin. The argument was as follows : 1. Most people cannot afford to buy property, so they take a home loan at a Bank. The home loan is paid back with interest and some of these loans are spread out over 20 years to make it affordable to the person who takes out the loan. So, over that 20 years the house of $100 000 will cost you say $1 000 000. {$900 000 paid in interest} The argument is also that the property has to increase in value, with more than $900 000 for you to say that it was a good investment AND you have to sell that property to get that profit. 2. The other side of the room said it was better to rent a smaller property and to invest the "savings" into something like Bitcoin, because your profit will pay for a bigger deposit or even a whole property in a few years time. I think paying a high interest rate to a Bank is just as bad as paying rent to a Landlord, because you are getting screwed in both these circumstances.  Well, if you'd pay $900.000 intrest on a $100.000 loan over 20 years, you should switch banks immediately I took a loan of €150.000 over 20 years when i bought my house 10 years ago, in the end i'll have to pay about €40.000 intrest, but i can deduct this intrest from my taxes, so in the end i'll pay about €20.000 out of pocket to loan €150.000 for 20 years (this are approximate numbers). I'm a big fan of crypto, but i'd personally rather have a house to live in than a big fat crypto wallet... I guess i'm to oldfashioned I do realise i can get a lot more profit when i would have invested all my money into crypto, but you can't live in your wallet... |
|
|
|
|
Show Posts
