That's a good link, the one i usually use is https://coinb.in/#fees it has the added benefit of having a fee estimator

@OP: there is no guaranteed fee that will result in a fixed confirmation time. Every 2016 blocks the diff is adjusted to make sure the AVERAGE time between 2 blocks is 10 minutes, so even if you'd pay a huge fee, by chance it could take way more than 10 minutes before a block is found.
A second thing is that a miner can chose which transactions he includes in the block he's currently trying to solve. There is no 100% guarantee he'll pick your transaction, EVEN if you pay a huge fee.  Offcourse, miners are running a business nowadays, so if you add a big fee, the odds of them adding your transaction is rather big.

Electrum has an android app... It's right there in the play store:
https://play.google.com/store/apps/details?id=org.electrum.electrum&hl=nl

As for your second question:
https://bitcoin.org/bitcoin.pdf

Coinbase? I wouldn't use them to store 5 cents.
Coinbase isn't a wallet, it's an exchange that allows you to create transactions without having access to your private keys. They have locked accounts in the past, and if they decide to take your money, dissapear, go scam, get hacked... You're basically left empty-handed. Online wallets and exchanges aren't good wallets, they're a huge liability and completely against bitcoin's ideology of "being your own bank".

Since you're talking about really big earnings, the following wallets should be considered:

• A locked wallet on an airgapped PC, preferably a very recent version of bitcoin core, non HD on a patched linux OS, preferably with an encrypted disk
• A properly generated paper wallet, bip38 encrypted with a strong password (preferably an unique password for each paper wallet, saved in a backupped password vault)
• A hardware wallet, preferably a popular one that is peer-reviewed (ledger and trezor pop to mind)

You should keep a backup of your seed, your bip38 encrypted paper wallet or a regular backup of bitcoin core's wallet.dat in a VERY safe place (like a bank vault). You can even use shamir shared secret scheme in order to break up seeds and encrypted paper wallet's private keys in n parts and store them in different bank safes.

If you want some easy-access BTC in order to pay people for bug bounty's or work on your pool, you could use a decent desktop wallet on a clean machine to keep a couple hundred bucks worth of BTC...

EDIT: btw, spreading your funds over multiple wallets is usually a good idear... The risk of losing access to one of the wallets increases, but the amount lost if one wallet gets hacked/is lost decreases.

I've never run an ether node either, but i think you need geth
https://github.com/ethereum/go-ethereum/wiki/geth

But yeah, if you're going to parse the full BTC, BCH and ETH blockchain and insert the data into a relational database, you'll need loads and loads of processing power and fast storage (and a lot of it).

I have never run a BCH node on any of my machines, but if i'm not mistaking, bitcoin-abc is the reference client for bitcoin cash.
I think this is the github repo: https://github.com/Bitcoin-ABC/bitcoin-abc

Disclaimer: since i've never run a BCH node, i can't be 100% sure this is the correct reference client!

That's why i proposed to use an existing block parser and edit it to suit your needs
IMHO, usually it's better not to re-invent the wheel...

But i wasn't kidding when i said this task will be very resource intensive. I tried parsing the blocks and inserting them into a simple mysql db a long, long time ago... I had to quit because the progress was so slow.

No, there's no schema, it's not a relational database.

Here's an old document i found on http://codesuppository.blogspot.com/2014/01/how-to-parse-bitcoin-blockchain.html
http://2.bp.blogspot.com/-DaJcdsyqQSs/UsiTXNHP-0I/AAAAAAAATC0/kiFRowh-J18/s1600/blockchain.png

Here's a link to the wiki: https://en.bitcoin.it/wiki/Block

Good luck

There are several options, the easyest one is searching for an existing block parser in a language you understand, and adapting it in order to insert all data into a relational database. Do expect this to be a very time and resource consuming process... You'll need hundreds of gigabytes of diskspace, and if you mess up your relational database, inserting, deleting, updating or selecting records will be painstakingly slow.

In the past, i've found a couple projects you could find interesting:
https://github.com/znort987/blockparser
https://github.com/alecalve/python-bitcoin-blockchain-parser
https://github.com/neocogent/sqlchain

IF i'm not mistaking, bitcoin.com is pushing bitcoin cash (BCH), so the OP might unknowingly have purchased BCH instead of BTC.

By recommanding the OP to download electrum, he can get himself into a lot of troubles! He might end up having to export private keys from electrum and import them into a bitcoin cash wallet in order to regain access to his funds.

It's also a lot more plausible the OP has 10 BCH in his wallet opposed to 10 BTC.
10 BCH = ~$8.600
10 BTC = ~$82.000

@OP: can you verify if you have BCH or BTC in your wallet?

Eventough that's not really relevant in this topic, what would happen is that you'd be able to spend the unspent outputs funding the public key hash (commonly known as the address) of this private key from 2 wallet implementations. As soon as the unspent outputs were spent from one of the wallets you imported the private key into, they would be removed from the utxo, so the other wallet would no longer be able to spend them.

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.


yup
Fixed the typo, thanks for the heads up

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 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...

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

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).

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...

Fixed that for you

Upon sequest of Wikadin, i scratched my comment. I did this because he edited his post, so it no longer contains errors.

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?

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