Making your own paper wallets might be your most inexpensive method, but you have to know what you doing or it will be your worst nightmare. There are a lot of advice on this forum on creating your own secure paper wallets, so you have to do some research before you attempt this.
Buying a hardware wallet will be a bit more expensive, but it is a lot easier and it gives you easier access to your coins. The other methods < Desktop wallets and online wallets > are the least secure, but the easiest method to store bitcoins.
I got a mail from trezor yesterday, they seem to have dropped their shipping fees within the EU, so a hardware wallet does cost less than $100, wether it be a trezor or a ledger nano S. That being said, my own view on the topic: Safest:- hardware wallet: both reasonably cheap and easy to use
- airgapped pc: expensive and a little bit harder to use (you always have to transfer unsigned/signed transactions between an online and offline machine)
- Paper wallet: very cheap and very secure if generated in the correct way, but hard to use (you have to sweep and discard the paper wallet each time you use it, then transfer the remaining value to a new paper wallet)
Medium:- Desktop wallet: free, but you need a clean PC and you NEED to encrypt your wallet (using a strong passphrase). Virusscanners/firewall are a must have
Unsafe-ish:- Android/Ios wallets: I call these ones unsafe because it's harder to verify the wallet's signatures, many people know less about their phone's OS than they know about their desktop's OS, and phones can easily get stolen/lost
Unsafe:- Any wallet where you're not the (only) one in controll of your private keys. This includes exchanges and online wallets
|
|
|
|
Recently, I invited a friend of mine to join this forum. After registering and confirming everything, his IP got immediately ban but he never use any VPN at all. So is there anything that he can do to get unban? I think he doesn't deserve to pay the fee so any help will be appreciated :-)
He must be using shared IP or his ISP allocated him IP (shared one) of another user that previously used bitcointalk for abuse so your friend also got ban.There's only 2 ways to life ban.Either pay the fee or ask your isp to allocate new ip/disconnect and reconnect router and then may be he can get new IP.After that clear cookies and cache and then ask your friend to create new account  So he just have to contact his ISP to change his IP to another one and just clear everything and create a new account. Thanks for the help  just pay fee it is some sat less than 1$ It isn't always less than $1. IDK if these prices have been updated since the BTC price rise, but here's an interesting thread: https://bitcointalk.org/index.php?topic=1396029Basically, it also has a link to a post of theymos: https://bitcointalk.org/index.php?topic=711968.msg8044683#msg8044683It seems to be possible to have 100+ units of evil, each unit of evil required a fee of 4023 sat. This means that some people will be asked to pay a fee of +402300 sat = 0.004023 BTC = +$20 at current preev rate |
|
|
|
Now, let's look at the bitcoin gold (from now on, i'll say BCG) point of view: what happens AFTER you broadcasted the above transaction on the bitcoin network. There are 2 possibility's: - either the transaction that was broadcasted on the bitcoin network is replayed on the BCG network, either by accident, by design or by someone bad. In this case, you end up with the same situation where you started from: you have a private key/public key/address (address B, since all unspent outputs for A would have been spent: on the bitcoin network they were spent by you, on the BCG network they were spent by the replay attack) that is valid on BCG and bitcoin network, and the address is funded. You have to start over. If people keep replaying bitcoin transactions on the BCG network, you'll be stuck in a loop
- OR, the transaction was not broadcasted on the BCG network, you are now free to import the private key for address A into a BCG wallet. There are no unspent outputs in bitcoin's UTXO that can be spend on the bitcoin network, but there are unspent outputs on the BCG network, so you can now safely spend them without risks for a replay attack. If you spend BCG unspent outputs to address A by funding address C, and somebody tried to replay this transaction, it wouldn't work, since on the bitcoin network those unspent outputs would not be in the UTXO set, since they were used to fund address B. The replaying transaction on the bitcoin network would be invalid
So to summarize. If after fork, I send out the 1 BTC to another address 'B', my BTC can not be compromised anyway. Even if later I claim the 1 free BTG using my private key from address 'A'. Right? However, after I import private key of 'A' address to a BTG wallet, it is possible that I won't see the 1 BTG because it has been replayed and already sent to address 'B', right? Is it safe to declare that if you import to BTG a private key of a BTC wallet that has no funds on it, your BTC will always be safe, the only risk is with your BTG funds? As far as i can tell, this statement is correct. If the private key only controlls unspent outputs on the BTG chain, you have no BTC at risk. |
|
|
|
The fee is required to make your transaction successfully on network.
All wallets probably charge same amount of fee and currently it is 129 satoshis per byte.
If you want to pay less fee for your future transactions, i can help you personally confirming transactions at my pool.
Just minimize the fee and create transaction, then send tx id to me.
A lot of wallets actually allow the users to modify their fees. Some wallets made a simple gui that allows the user to chose for slow (cheap) fees or fast (expensive) fees. Other wallets actually allow a user to pick how many sat/byte they want to use (for example, the official ledger wallet, or electrum if you enable the correct features). Just an offtopic question: which pool do you own? Since you offer the OP to help him by mining his transactions, i can only assume you must manage a significant ammount of hashrate, otherwise it would be giving false hope to the OP... Since if you don't mine at least 2-3 blocks/day, the OP would have to wait a really long time before his transaction would eventually confirm |
|
|
|
Don't worry you will get them if you own private key for that wallet.
That is correct, however, to "cash out" the bitcoin gold without compromising your paper wallet you'll have to jump trough several hoops. If you ever decide to "cash out" the bitcoin gold, it might be a good idear to sweep the paper wallet into a different bitcoin wallet, wait untill the sweeping transaction has confirmed, and afterwards (and only afterwards) import the private key from your paper wallet into a bitcoin gold compatible wallet. As soon as your private key is entered in either wallet, your paper wallet must be marked as compromised. As soon as the bitcoin and bitcoin gold are spent, discard and never re-use the paper wallet again... Instead, making a new paper wallet to transfer your BTC to might be a good idear. Thanks for the explanation. But is this process affecting in any way the legacy block chain? Let's suppose I have 1 BTC in bitcoin core address 'A'. I keep it until block number 491407 (bitcoin gold fork). After this passed (let's say after 6 blocks in about 1 hour), I transfer out the 1 BTC to another address I own 'B'. After this is done, I will get the private key of 'A' address and store it so if needed, I can claim the 1 BTG using this private key. First question: - since replay protection is not implemented (at least no information about this), are there any risks of sending out the 1 BTC to another address 1 hour after the fork? Is there any risk of loosing the 1 BTC? Second question: - when and if I will import the 'A' address private key to a BTG wallet are there any risks? Is there a possibility that I will not get the 1 BTG? Or is it affecting somehow the already sent out 1 BTC to my 'B' address? Thanks for the clarifications in advance. Well, let's start from the bitcoin point of view. You funded your paper wallet's address A. It has one unspent output in the UTXO set before the fork. After the fork happened, you create a transaction that funds address B, using the unspent outputs from A (and signed with the pk on your paper wallet) and wait untill said transaction is confirmed. At this point, address B is funded. No risks (if you used a clean PC and took all usual precautions you normally take when sweeping paper wallets). Now, let's look at the bitcoin gold (from now on, i'll say BCG) point of view: what happens AFTER you broadcasted the above transaction on the bitcoin network. There are 2 possibility's: - either the transaction that was broadcasted on the bitcoin network is replayed on the BCG network, either by accident, by design or by someone bad. In this case, you end up with the same situation where you started from: you have a private key/public key/address (address B, since all unspent outputs for A would have been spent: on the bitcoin network they were spent by you, on the BCG network they were spent by the replay attack) that is valid on BCG and bitcoin network, and the address is funded. You have to start over. If people keep replaying bitcoin transactions on the BCG network, you'll be stuck in a loop
- OR, the transaction was not broadcasted on the BCG network, you are now free to import the private key for address A into a BCG wallet. There are no unspent outputs in bitcoin's UTXO that can be spend on the bitcoin network, but there are unspent outputs on the BCG network, so you can now safely spend them without risks for a replay attack. If you spend BCG unspent outputs to address A by funding address C, and somebody tried to replay this transaction, it wouldn't work, since on the bitcoin network those unspent outputs would not be in the UTXO set, since they were used to fund address B. The replaying transaction on the bitcoin network would be invalid
|
|
|
|
When it comes to fees, you get what you payed for. A fee is the difference between the sum of the values of all inputs of your transaction and the sum of the values of all outputs of your transaction. The miners can add all fees of all transactions they put into the block they're currently trying to solve to the block reward of 12.5 BTC (at this moment). Since a block has a limited space, a miner will allmost always prefer to include transactions with the highest fee per byte of transaction data. So, cheaping out on the fee will make your transaction less attractive to the miners, so it'll have lower odds of ending up in a valid block, so it'll have a higher chance of having to wait a long time, or even being forgotten by the nodes before it's confirmed. You can activate manual fee selection in electrum and pick a really low fee (there is nothing stopping you from creating a tx with a fee of 10 cents in BTC), but this might not be the best idear (for above reasons). If you really want to cheap out on the fees, there are a couple things you can do: - don't collect dust inputs
- monitor https://bitcoinfees.21.co/ and create a transaction at times when the average required fee is low
- always opt-in RBF
- you don't need to add a fee that'll have a 95% chance of getting into the next 3 blocks if that's not really a requirement. You can also be content with a 95% chance of getting into the next 24 blocks
|
|
|
|
1. Yes. No one can hack your wallet just by knowing your bitcoin address. The only reason to not publicize it is due to privacy reasons.
2. Not sure.
3. Activity refers to how active you are here on bitcointalk. If you post at least once per day, you can gain the maximum activity (14 activity every 2 weeks). For more info about this, read around the forums. Can't link you to threads since I'm on mobile.
To fill in the blanks Answer 2: https://bitcointalk.org/index.php?action=draftsAnswer 1 and 3 were already answered by mjglqw |
|
|
|
Don't worry you will get them if you own private key for that wallet.
That is correct, however, to "cash out" the bitcoin gold without compromising your paper wallet you'll have to jump trough several hoops. If you ever decide to "cash out" the bitcoin gold, it might be a good idear to sweep the paper wallet into a different bitcoin wallet, wait untill the sweeping transaction has confirmed, and afterwards (and only afterwards) import the private key from your paper wallet into a bitcoin gold compatible wallet. As soon as your private key is entered in either wallet, your paper wallet must be marked as compromised. As soon as the bitcoin and bitcoin gold are spent, discard and never re-use the paper wallet again... Instead, making a new paper wallet to transfer your BTC to might be a good idear. |
|
|
|
thanks for the swift response.
so, building a rig with what Im thinking is not possible since the hazard and low ROI.
If bitcoin will be my path, what is my best way to invest and get involved?
If you're talking about bitcoin mining, then yes, you simply can not ROI (let alone make any profit whatsoever) by building a CPU/GPU rig. It's not just a hazard and low ROI, it's basically throwing a perfectly good machine away for 0 income. If you build a mutli GPU rig, you can ROI on altcoins, but i can't really give you any advice about that. People in the altcoin mining subforum however, will probably be able to point you in the correct direction. IF you decide to start mining bitcoins, first calculate everything: - the total cost of your farm : initial purchasing cost of the ASIC(s), the repair costs (bitmain, the vendor that sells the most efficient miners only has 3 months of guarantee), the S&H, the income tax, the shelves, the cooling, the PSU's, the wiring,...
- the total cost of your power bill (an S9 draws about 1400 Watts)
In the end, the break-even point for me is around a power cost of 10 cents/Kwu. If your power costs more, i wouldn't take the risk to start mining bitcoin. If your power is less, you *might* mine profitable (if you by the right ASIC and all other parameters are OK) |
|
|
|
Is there a mining software that can be installed and run on top of Windows?
Thanks!
If you're talking about bitcoin mining (since you're in the bitcoin mining subforum), then yes, there is software you can use to create sha256d hashes of block headers... However, i won't post a link to any of these tools since you will burn a lot of power (and possibly your pc) and gain nothing in return. In my latest calculations, i found that an i7 mines at a maximum of 66 Mh/s. At current diff, block reward and BTC price, mining 24/7 at 100% cpu load will give you $0.03/year in BTC. To make these 3 cents, you'll need to run a desktop with an i7 at 100% load 24/7 for a full year... Think about the power you'll burn and the fact that you will have to sacrifice a perfectly good pc to do nothing but mining... Both CPU and GPU mining have been obsolete for many years now. If you want to mine bitcoin, you need super-cheap power and you'll need to invest in a latest gen ASIC. If you have a decent GPU, you might try your luck with altcoin mining, in this case it would be best to re-ask your question in the altcoin mining subforum. Good luck! |
|
|
|
Thank you for the tips guys I think I should agree with you all and do not use any online wallet. Its best to use a desktop wallet then. Will be looking into that next.
It's best to use a hardware wallet, paper wallet or airgapped pc (at least from a security standpoint)... When talking about security, it goes like this (IHO): - Least secure: exchange (my advice: only keep funds in an exchange during the time you need to deposit, exchange and withdraw)
- Unsecure: decent online wallet (my advice: only keep pocket change on an online wallet, and only during times you won't be able to access your main wallet)
- Little bit unsecure: cellphone wallet (my advice: don't load these wallets with more funds than you'll spend during a day out, and empty them afterwards)
- Allmost secure: desktop wallet (my advice: don't keep more than a couple hundred bucks worth of BTC on here)
- Secure: hardware wallet, paper wallet, airgapped PC (my advice: use these wallets for bulk and longterm storage of your funds)
|
|
|
|
|
You seem to have been very lucky that you used blockchain.info as a watch-only address...
If you had some actual funds in there, there would have been a 99.9999999% chance this douchebag would have stolen everything.
Treat this blockchain.info account as compromised, remove all keys and addresses from it, then log off and create a new account right away... Block the user that asked you for your information and never give away your id/password again.
|
|
|
|
hello i did anyone have know or about mining with blockchain wallet that have so many in fb and the for bilion user in fb i got are inbox that mention can earn btc mining with blockchain wallet .. look weird and i think is scam .. its that have sofware like that  just want to know if that true or scam people .!!! I'm trying to figure out what your question is exactly... Please let somebody from your regional subforum help you with translating your question... If you're asking if you can mine using fb (facebook?), the answer is NO... Anybody who's telling you this is either trying to sell you a different product/service or is trying to scam you. If somebody asks you your identifier/password of your blockchain account, he/she is trying to scam you If somebody is trying to let you download a piece of software in order to mine, there is a 99% chance he/she is trying to scam you (there are applications that assist you in GPU mining altcoins, but if somebody is trying to make you download an application, it's probably fake) If the above 3 lines did not answer your question, please try to improve your op, so your real question becomes clear to us. |
|
|
|
|
Asking for the best online wallet to store your funds is like an ill person asking for the best faith healer... Sure, there are a couple faith healers out there that can comfort you in your last dying moments, but they won't be able to cure you, any betterment in your condition would be either coincidental or due to the placebo effect.
If you want a secure wallet that support multiple currencies, you can go for a trezor or ledger hardware wallet, or if you don't care about your security, there are a couple android wallets like coinomi or jaxx that will suit your needs.
As for your "faith healer" online wallet, there are wallets like Cryptonator out there, but if you use the search function, most of these multi altcoin online wallets have at least a couple running scam accusations against them. blockchain.info is indeed one of the most trusted online wallets, but they only support 2 coins, and i'm still not recomanding anybody to use them, since they remain an online wallet...
|
|
|
|
I need 0.01ETH for moving tokens to exchange so i can sell them. Will return 0.015ETH within one hour.
Can provide a signed message if asked for. Please also leave the address you would like the ETH to returned to.
My ethereum address is 0x6be986582e2c8f5d53b1f8b0e60746b8c169d9c5
I had the same problem yesterday, i actually exchanged BTC to ETH to solve it. If you give me a signed message with an old, staked address, i can fund you Currently don't have any BTC because signature campaign has not paid out yet. Anyway here is the signed message: This is onnz423 proving to moccacino that 0x6be986582e2c8f5d53b1f8b0e60746b8c169d9c5 is my ethereum address. Requesting 0.01ETH with repayment of 0.015ETH within an hour. The signing address was staked here: https://bitcointalk.org/index.php?topic=996318.msg18910702#msg18910702
1onnz4cetY6CqCVEUoTYkURMS8AfBgDg8
G1+paobCwxnfbes8bSuARFAgRgRSytW6KV2cWSqLk43bH+44DwunSX3H2DLNlPlTVBEzIgObhlFhBVC+7xEFH9M=
Thanks alot message verified, 0.01 ETH sent: https://etherscan.io/tx/0x76073811cbd1a3c2fc09e52691ce336137f17ea0975f5f6e490461e600aa4356I'm not in a hurry, just pay me back whenever you're done my address: 0xD65400079AdAba8cCcaD4f3D20D21f13B6240514 |
|
|
|
no problem which adress
If you're talking about which address to sign a message with, it doesn't matter, as long as it was staked at least a month ago, it's just to prove you're still the same account owner. If you're talking about the address wich to send the ETH back after you exchanged: 0xD65400079AdAba8cCcaD4f3D20D21f13B6240514 |
|
|
|
I need 0.01ETH for moving tokens to exchange so i can sell them. Will return 0.015ETH within one hour.
Can provide a signed message if asked for. Please also leave the address you would like the ETH to returned to.
My ethereum address is 0x6be986582e2c8f5d53b1f8b0e60746b8c169d9c5
I had the same problem yesterday, i actually exchanged BTC to ETH to solve it. If you give me a signed message with an old, staked address, i can fund you |
|
|
|
is it true that I still can access my wallet with my email and 12 seed phrases and able to see my bitcoin address and btc right? I do not have wallet for pc desktop.
Yes you can. It's also ideal to have a backup of your privatekey if you are planning on formatting your phone. Your privatekey allows you store store your btc address and bitcoins in even other clients other than the ones you used in making that wallet. Btw, incase you didn't know, electrum also have a pc version. So can I use electrum on mobile and desktop PC version at the same time? If you use the same seed, then yes, you can install electrum on a dozen of pc's/phones at the same time, and still manage the same keys. But if you install electrum on your phone AND your desktop, and your phone gets stolen, the thief can spend all unspent outputs, and you'll be left with nothing (all wallet will be emptied, even the one one your pc, since it has the same seed => master private key) I guess I understand better now. Thanks. One last question. I have account on localbitcoins.com and have very small amount (0.0003btc). When I copy my public address from localbitcoins.com and search it on blockchain.info site it shows I have final balance of zero, and when I import my address of localbitcoins to BlockChain app it shows Watch Only and Balance of zero but in fact on the localbitcoins.com I have 0.0003 btc. Do you know why this happens? It's been a long time since i last used localbitcoins. But, it sounds like localbitcoins is just showing you an unused deposit address (this is actually a good thing, IIRC, localbitcoins generates a master key for each client, and always derives a new address each time a deposit is made, this is a big plus for your privacy). It's possible that the previous time you deposited BTC to localbitcoins, they gave you a different address to deposit, or it's possible you've never deposited in the past. In this case, the 0.0003 BTC you have with them is currently in their own hotwallet, and when you ask for a withdraw, they send the funds from their hotwallet.... But once again, i haven't used localbitcoins in quite a while, so i'm unsure witch procedure they follow nowadays. |
|
|
|
is it true that I still can access my wallet with my email and 12 seed phrases and able to see my bitcoin address and btc right? I do not have wallet for pc desktop.
Yes you can. It's also ideal to have a backup of your privatekey if you are planning on formatting your phone. Your privatekey allows you store store your btc address and bitcoins in even other clients other than the ones you used in making that wallet. Btw, incase you didn't know, electrum also have a pc version. So can I use electrum on mobile and desktop PC version at the same time? If you use the same seed, then yes, you can install electrum on a dozen of pc's/phones at the same time, and still manage the same keys. But if you install electrum on your phone AND your desktop, and your phone gets stolen, the thief can spend all unspent outputs, and you'll be left with nothing (all wallet will be emptied, even the one one your pc, since it has the same seed => master private key) |
|
|
|
I am new to bitcoin and I am confused about wallet, private key, seed etc.. my aim is to buy bitcoin and HODL for life.
I currently only have 2 wallets on my phone (blockchain app and electrum) and I have written down the 12 seed phrases for them. If I were to format or buy new phone now and reinstall those 2 wallets, is it true that I still can access my wallet with my email and 12 seed phrases and able to see my bitcoin address and btc right? I do not have wallet for pc desktop.
i have no idear about blockchain, but for electrum, you are correct. All you need is the 12 word seed phrase to restore your master private key. "under the hood" electrum uses this master private key to derive private keys => public keys => addresses. One remark tough: if you're planning on buying and holding "for life", don't use an online wallet or a cellphone app... Buy a hardware wallet (they cost less than $100), create a paper wallet, or generate a wallet on an airgapped pc. |
|
|
|
|
Show Posts
