Bitcoinwallet used by 2 people at the same time.

[shorena]

I didn't understand something.
 If i have core wallet with full blockchain synchronized, i could insert wallet1.dat send some coins..
Then backup wallet1 and insert wallet2.dat without any consequences.
This way i can have as much wallets as i like?

Yes, every switch needs a quick rescan thats it. Well, unless you run core in pruned mode in which case you can not switch wallets without redownloading the entire blockchain.

If i forget to return wallet.dat, wallet will create new wallet.dat .
What do you say?

Correct, Im not sure how this is relevant to the topic at hand though. Core is a bad choice for a wallet to be handled on different machines as I already said above and as was confirmed by Danny (and probably others). It would make more sense to use an HD or online wallet for this sort of thing.

[vlamer]

Hey guys,

I want a Bitcoin wallet that can be used by 2 people at the same time.
Something like a bank account that can be used by you or your wife.

It''s something like a business account for me and my business partner.
We both need access to this wallet.

I've been using it like that,
the same PrivateKey are in two different wallet, i put in blockchain.info and in my node.

[ranochigo]

Hey guys,

I want a Bitcoin wallet that can be used by 2 people at the same time.
Something like a bank account that can be used by you or your wife.

It''s something like a business account for me and my business partner.
We both need access to this wallet.

I've been using it like that,
the same PrivateKey are in two different wallet, i put in blockchain.info and in my node.

Blockchain.info sends the transaction back to the origin address. Since Bitcoin Core constantly uses change address for new transactions, you have to constantly re-add the new change address to blockchain.info.

It is possible to use the same seed on HD wallets on the same time though since all the change address can be determined from the seed.

[jkminkov]

it is perfectly safe*, if you take some simple notes, to use one wallet with two computers, just make use you always use coin control and send small change coins first when they have enough confirmations(medium priority).

change amounts are quite small, most of the time they are from 0,010xxxxx to 0,019xxxxx, you can always send to console - keypoolrefil 1000 before copying wallet.dat it will make your wallet bigger with 1000 change addresses

before deleting one wallet check if balance is equal to another by comparing output of - listaddressgroupings - typed in console, dump/import the missing address

there is an option to send change to custom address also

* - in fact you have double backup if one PC HDD fails, but you have double weak points if one PC is compromised by a trojan virus.

[shorena]

it is perfectly safe*, if you take some simple notes, to use one wallet with two computers, just make use you always use coin control and send small change coins first when they have enough confirmations(medium priority).

change amounts are quite small, most of the time they are from 0,010xxxxx to 0,019xxxxx, you can always send to console - keypoolrefil 1000 before copying wallet.dat it will make your wallet bigger with 1000 change addresses

before deleting one wallet check if balance is equal to another by comparing output of - listaddressgroupings - typed in console, dump/import the missing address

there is an option to send change to custom address also

* - in fact you have double backup if one PC HDD fails, but you have double weak points if one PC is compromised by a trojan virus.

You are funny.

"Its perfectly safe you just have to

#1 create 1000 addresses in advance
#2 think which inputs to spend every time you create a transaction
#3 take extra caution against viruses."

Just use electrum, multibit HD or any other HD wallet.