1)
Does this mean they generate a completely new keypair (including private) for each time you "receive"?
Or is it (not sure if this is possible) a new address which is linked to an existing private key?
Does this mean they generate a completely new keypair (including private) for each time you "receive"?
Or is it (not sure if this is possible) a new address which is linked to an existing private key?
Yes, most wallets now generate a new private/public key + address for each receive. An HD wallet generates private keys using the seed.
2)
If it was a new keypair each time and you woud be receiving lots of transactions you'd end up with hundreds of keypairs/addresses with small amounts of coins "in" them.
Would this not make sending coins an insanely difficult task or at least -transaction fee wise- very expensive (you'd have to make hundreds of small transactions)?
If it was a new keypair each time and you woud be receiving lots of transactions you'd end up with hundreds of keypairs/addresses with small amounts of coins "in" them.
Would this not make sending coins an insanely difficult task or at least -transaction fee wise- very expensive (you'd have to make hundreds of small transactions)?
The size of the transaction is determined by the number of inputs and outputs, and that is generally the same regardless of whether they use the same address or a different addresses.
3)
I noticed the transaction fees with the wallets I looked at are quite high. Is there a software wallet (not mobile only though - I dont trust smartphones
) which lets you actually chose what you are willing to pay? (I totally don't care if my transaction takes a few days to get picked by a miner and processed.)
I noticed the transaction fees with the wallets I looked at are quite high. Is there a software wallet (not mobile only though - I dont trust smartphones
) which lets you actually chose what you are willing to pay? (I totally don't care if my transaction takes a few days to get picked by a miner and processed.)There are several wallets that let you choose the transaction fee. Mycelium is one.