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8661  Bitcoin / Bitcoin Technical Support / Re: Someone explain? on: February 15, 2018, 04:03:15 PM
I was thinking they could be sharing hash rate or switching hashrate to and from each pool depending on luck?

Lets say 3 pools each with following hashrate.
pool A 100ph
pool B 200ph
pool C 300ph

Pool A finds block. pool A then moves 25ph to pool B Pool B now has 225ph pool B now finds few blocks luck change. Pool B now move 50ph to pool C pool C then mine multiple blocks luck -% all pools restart process.

If you watch the network hashrate you can clearly see large portions coming online and offline.

Some people will change poola based on prospective earnings yes. Per pool, an API call can normally be used to find the total hashrate and the amount of blocks mined by that pool in the last x amount of time (anywhere from 2 hours to a week or so as some smaller mining pools may find a block only every week or so but it may work out that everyone gets a better share, profit wise). There's an argument for that not making a lot of a difference though calculation wise.

There are other factors though. A company with some miners in it (separate from what the company already does) may just leave the miners running for 9 or 10 hours a day for example. Or someone may live in a flat with electricity already paid for and may turn the miner off at night to sleep in a room a bit quieter.

And hobbyistic miners that won't ROI with their miners may only leave them running for an hour or two every so often. If people do this at different times (due to timezone differences) then the mining share to a certain pool may increase - like a solo mining pool if someone feels particularly lucky.


Also, in the OP. I see btc.com being mentioned. That pool is owned by bitmaintech who also own antpool.com and have a large amount of hashing servers and server farms.
8662  Bitcoin / Bitcoin Discussion / Re: How do you store your bitcoins? on: February 15, 2018, 03:30:42 PM
You cannot know if the online wallet will just run away with your money. I had heard from people that they are sometimes hacked.

There's also the issue that they can be blocked by the website administrators for something either random or unreasonable (normally deemed to be something against the terms and conditions of the site but they're not normally very specific).

Bloclchain.info is an exception to that but it's still risky to leave coins in it as they have a copy of the private keys and can be hacked (if your password is too weak).
8663  Bitcoin / Electrum / Re: anyway to import wallet from block.io? on: February 15, 2018, 03:09:52 PM
Can you get your private keys from the wallet? If not, you'll have to send the coins to electrum instead if you really want to use them there.

It's highly recommended you move from web wallets to software wallets (SPV or wallets like Bitcoin Core).
8664  Other / Off-topic / Re: Suggestion: Bitcoin / Altcoin mixers website on: February 14, 2018, 06:08:27 PM
Average fees are normally between 0 and 3%.

Afaik, if you wanted to mix an altcoin, I think it'd be more likely people would use shapeshift.io to convert it to bitcoin and convert it back at a later time as shapeshift is quite a quick exchange with no sign up options everything's quite anonymous.

There are sutes particularly like chipmixer who round down payments to the closest mbtc and take the extra btc as a donation/tip.
8665  Bitcoin / Electrum / Re: bc1 can only receive from another Electrum? on: February 13, 2018, 09:33:21 PM
Every wallet can receive from bech32

Every wallet that has been programmed to accept it can. There are some that won't for example, wallets that might not currently be in development for obvious reasons like multibit.

Every wallet can receive from bech32. Legacy wallets will receive at "1" (or "3") addresses, but the payer can have their funds in a bech32 address. In other words, funds formerly in a bech32 address can be received by any wallet. When paying a merchant using legacy addresses, you can still pay them even if your funds are in a bech32 address. The blockchain will record a transaction with a bech32 input, and a legacy output. The merchant's legacy software will be able to collect the legacy output.

Expanding on my previous statement: If you use the Trezor or Ledger with Electrum, then yes, you can send bitcoins to a "bc1" address. Presently, released versions of Trezor and Electrum (and presumably Ledger) limit users to "3" SegWit addresses. However, because Electrum supports sending to bech32, it can send from an "3" address to a "bc1" address.

Edit:

Decided to double check the Electrum + Trezor/Ledger combination for sends. https://en.bitcoin.it/wiki/Bech32_adoption confirms this ability. (But it also claims that these combinations can receive at "bc1" addresses...)

I'm not sure that's accurate for every wallet but it'll certainly help a few. Normally, due to the decentralization of bitcoin, every wallet has to validate the transaction input and the output and gajn a TX hash from the validation process. If the TX hash is different for bech32 (which is probably the case as they're much smaller transaction sizes) then some nodes will reject them.

Though ledger and trezor will support receiving from them as you state so that is correct and the original point of this thread...
8666  Alternate cryptocurrencies / Pools (Altcoins) / Re: I am setting up a pool and need some help on: February 13, 2018, 08:05:26 PM
What software are you running for this?

Also, could possibly be an issue connecting to the daemon. Probably start by checking it is accessible, the right rpcusername and rpcpassword are configured correctly in both the software and the daemon.
8667  Bitcoin / Electrum / Re: bc1 can only receive from another Electrum? on: February 13, 2018, 07:31:56 PM
For example, trezor and ledger uses address starting with 3(segwit-in-p2sh), they can send bitcoins to bc1 address?

If you use the Trezor or Ledger with Electrum, then yes.

If you try to spend the exact same UTXO's using Trezor's or Ledger's web interface, then likely not yet.

For a trezor: seeds, private keys and derivation paths are generated by the hardware so. No to both as both will work from the same system.

I think they should be able to receive from bech32 however, especially of you use electrum.


Every wallet can receive from bech32

Every wallet that has been programmed to accept it can. There are some that won't for example, wallets that might not currently be in development for obvious reasons like multibit. Also, I'm not sure whether the Andreas Schildbach (not sure how you spell his name) Bitcoin wallet for Android recognises bech32 addresses or not as it does get updated every so often but I'm not sure entirely what the updates bring each time as there isn't normally an update log with it (unless I'm looking in the wrong place).

"What you can do with a wallet that uses these addresses:

send to any and all wallets, exchanges and websites
receive from other Electrum wallets version 3.0 or greater"

https://www.reddit.com/r/Electrum/comments/7dku5r/segwit_wallets_and_electrum/

Yeah sure, that's how everything works.
Even stuff that's hard coded and not updated just randomly accepts new protocols... It usually doesn't!

Think about trying to run a Windows application on Linux, there's obviously going to be some issues. Blockchain.info took a few weeks and think about the volume of visitors they get.

You could probably get your coins credited to an exchange wallet by sending an email to their support (but that normally takes 48 hours to two weeks or even a month since there are disputes on unconfirmed transactions). Or importing a private key from another wallet into electrum but that's quite risky especially if there's a lot on it.

Abdussamad has the right idea.
8668  Bitcoin / Electrum / Re: bc1 can only receive from another Electrum? on: February 12, 2018, 11:50:42 PM
For example, trezor and ledger uses address starting with 3(segwit-in-p2sh), they can send bitcoins to bc1 address?

If you use the Trezor or Ledger with Electrum, then yes.

If you try to spend the exact same UTXO's using Trezor's or Ledger's web interface, then likely not yet.

For a trezor: seeds, private keys and derivation paths are generated by the hardware so. No to both as both will work from the same system.

I think they should be able to receive from bech32 however, especially of you use electrum.


Every wallet can receive from bech32

Every wallet that has been programmed to accept it can. There are some that won't for example, wallets that might not currently be in development for obvious reasons like multibit. Also, I'm not sure whether the Andreas Schildbach (not sure how you spell his name) Bitcoin wallet for Android recognises bech32 addresses or not as it does get updated every so often but I'm not sure entirely what the updates bring each time as there isn't normally an update log with it (unless I'm looking in the wrong place).
8669  Bitcoin / Electrum / Re: bc1 can only receive from another Electrum? on: February 12, 2018, 08:27:13 PM
For example, trezor and ledger uses address starting with 3(segwit-in-p2sh), they can send bitcoins to bc1 address?

If you use the Trezor or Ledger with Electrum, then yes.

If you try to spend the exact same UTXO's using Trezor's or Ledger's web interface, then likely not yet.

For a trezor: seeds, private keys and derivation paths are generated by the hardware so. No to both as both will work from the same system.

I think they should be able to receive from bech32 however, especially of you use electrum.
8670  Bitcoin / Development & Technical Discussion / Re: Is there a bech32 vanity address generator? on: February 12, 2018, 06:17:00 PM

Aha! You finally managed to perfect and upload it then? I'll test it when I open up a Linux machine. Might also try to convert it to use in Windows (probably by translating the code to one in Windows that'll run fast enough).
8671  Bitcoin / Electrum / Re: bc1 can only receive from another Electrum? on: February 12, 2018, 06:11:19 PM
See here.

I read this weeks ago but I still don't get this part.

"receive from most other wallets and websites simply because they consider bech32 addresses as invalid."

If the wallet uses segwit-in-p2sh/P2SH-P2WPKH, they can understand bech32 address as valid?

This means that if you want to receive BTC to SegWit bech32 address you may have problem because some sites/wallets simply do not recognize that type of address.We hope that this will change with time,and in the meantime you can use segwit-in-p2sh address format in Electrum if you follow these instruction : Create SegWit BIP49 Wallet

For security reasons use iancoleman tool offline and on 100% clean PC to keep your seed safe.


In addition, most sites will use validation to determine whether the address entered is wrong. This will raise up 2 errors:
1. The bc1 isn't a 1 or a 3.
2. The checksum will not correctly validate as it is a separate algorithm.

Addresses starting with a 3 came to the network long before segwit was activated so they SHOULD be accepted (a very limited number may still not).
8672  Bitcoin / Bitcoin Technical Support / Re: Bitcoin Core does not connect to the network on: February 12, 2018, 11:19:29 AM
There's a network tab in either help>debug or the options window.
There it should give you an option to change a port/use a vpn. Change the port to something like 22.



Only one connection is really necessary for synchronization.
8673  Bitcoin / Bitcoin Technical Support / Re: Lost Relative on: February 12, 2018, 08:38:28 AM
his computer was destroyed but i got the data off the hdd and i will have access to his email tomorrow

Have you found any qr codes in his paperwork anywhere? He may have printed off the wallet as a backup.

Do you have any idea what passwords he used, how old was he? If he was over say 30 he might have started writing passwords down somewhere.

If you load up bitcoin core with a copy of the backup of the wallet, does it have a padlock (search for wallet.dat if it's bitcoin core).

Did his phone also get destroyed or is that still functioning. Can you get that recovered or recover it yourself?

If it was a wallet other than bitcoin core, if theres a random 12 words, it could be a HD wallet. I'd suggest downloading electrum and trying it in there.

Also, my sincerest sympathy to your family and his friends/colleagues at this time. The coins will remain on the drive if you don't want to rush and want some time to maurn for him.
8674  Bitcoin / Bitcoin Technical Support / Re: help needed: Import priv key from electrum bech32 address into core on: February 12, 2018, 08:10:59 AM
Using addwitnessaddress with one of the newly derived addresses (with the "legacy" private keys) returns an error because "segregated witness is not enabled on the network"

Is that actually the case or is it just a parameter I need to change? Has anyone actually claimed forked coins from such addresses?

Is your wallet fully synchronised? That's normally what causes the issue of it not being enabled on the network yet (as you haven't gotten up to that block so core doesn't know it's been activated).
8675  Bitcoin / Electrum / Re: bc1 can only receive from another Electrum? on: February 11, 2018, 08:45:36 PM
Or all segwit wallets is ok? I mean, a lot of them use only segwit-in-p2sh/P2SH-P2WPKH, not the bech32/BIP173/"native segwit".



It is dependent on the wallet type and hwat it can decode whether it will accept it or not. Generally speaking, Bitcoin core and Electrum are the only ones that can easily send/recieve to bech32 addresses. There are other wallets that will support it as well but these are the two main ones I know that will definitely support them. If you could post a list of the main wallets you use then we could try to see if those wallets support recieving from bech32/natic segwit addresses or not?
8676  Bitcoin / Electrum / Re: No History in Electrum 3.0.5 on: February 11, 2018, 05:36:57 PM
Try going to the network dialog screen and uncheck "autoconnect" and select a few different servers to check that's not the issue.

Also, what does the balance bar show at the bottom? Does it say "synchronizing" or 0 (verge).
8677  Economy / Speculation / Re: Guy we must stop crypto/btc FUD :( we need to start campaigne. on: February 11, 2018, 05:03:34 PM
The retweeters either don't know what they're talking about or have just sold and want the price to fall so they can get more and watch it go back up once they get more money.

Its stable at about £6000 ATM I'd say it's almost inevitable we'll climb back up to £10k soon and may even go further than that this quarter.
8678  Bitcoin / Project Development / Re: How to develop a mining app on: February 11, 2018, 12:20:51 AM
For some time now I have been thinking on how to develop a mining app,  bbut don't know how it works,  am an android developer. Please I need help on the concept behind it and how to implement it on android

There's already a miner app called simple g miner you could use/look at for Android not sure if it's open source or not.
It uses both sha256 and scrypt.

It isn't viable to mine from Android but it's quite a nice app nonetheless.
Also, there might be a way to connect a USB asic to a rooted tablet to get it to mine but it'll probably overheat or damage RAM due to the intense process needed.
8679  Bitcoin / Bitcoin Technical Support / Re: Bitcoin Core does not connect to the network on: February 10, 2018, 10:21:37 PM
Posting the debug is the only way we would  be able to identify the problem. Although, a common reason for not being able to connect to peers is that your firewall is blocking the connections. Check your firewall system and any other similar processes which can block incoming/outgoing connections.

In addition to this. Booting in safe mode (if it's Windows your using may help with this) for built in firewalls.

Also, do you own your router and have access to use any port on it? If not, you'll have to change the port your client connects to (port 22 would be a good one if it's free as that's usually an SSH port).
8680  Bitcoin / Bitcoin Technical Support / Re: Is Python good for bitcoin apps? on: February 10, 2018, 06:21:08 PM
As a interpreted language instead of compiled, it is not good for anything serious. Python is modern day version of 90ties Visual Basic.

You do realize that:
1) Python scripts can be compiled and
2) Electrum is written in python

Your statement is completely senseless. Unless, of course, you consider electrum as "not serious".
Python is one of the (if not) the best scripting langauge to process/handle data and strings.
It provides a lot of useful functions which you would have to write yourself in other languages (e.g. C/C++/Java).

I think MysteryMiner is referring to the main console only allowing interpreting of the software.

Microsoft and other companies have made powerful compilers of it though however and yes electrum is mostly written in Python. Even theymos says they like to use electrum for small amounts of bitcoins that he wants to transfer/store.
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