I am using Multibit Classic now and want to change to MultibitHD or Electrum because i think its easier to backup. I hope i am right.
I don't understand, if i have the 12 words,so i can backup my wallet at any computer ?
If i create today my new wallet and recive 200 payments on 200 generatet wallets that multibit / electrum create. Then i reinstall my computer and electrum / multibit and i only have to input the 12 words and i have still my money ? So i dont need to safe any file ? ONLY the 12 Words ?
From where Electrum and MultiBitHD knew that the 200 wallets owned to the 12 words ?
Sorry but i dont unterstand it
Firstly, a slight correction to your terminology. The wallet is not generating 200 "wallets"... it generates addresses/keys, but your understanding is correct... you only need the 12 words. It is the seed (or starting point), and Electrum (or MultiBit HD) will be able to rebuild your entire wallet from just those 12 words. That is the whole point of HD (Hierarchically Deterministic) wallets.
The highly complex and mathematical explanation is here:
https://github.com/bitcoin/bips/blob/master/bip-0032.mediawikiA slightly more simple explanation would be that the HD wallet system is is like an infinitely long hallway, with an infinite number of doors... behind each door is a room full of addresses/keys. Your 12 words are the "starting" point in the hallway and Electrum (or MB HD) then counts down a set number of doors from your starting point and that is the room full of keys that your wallet will use.
So, let's say your 12 word seed translates as "start at Door #120"... Electrum will then count along a fixed number of doors, say 44, and that is your door, so you get all the addresses and keys behind door #164. If you reinstall your computer and start Electrum up... you put in your seed... Electrum works out that it needs to start at Door #120, counts along 44 more doors again and you get all the same addresses and keys from behind door #164
Hopefully that makes sense...
NOTE: I don't recommend that you use MultiBit HD at the moment... it has a serious bug in it that is preventing some users from opening their wallets. If you're going to upgrade to an HD wallet, I would suggest you switch to Electrum.
multibit clasic is dead....i have sended a transfer with it almost 1 week ago...not confirmed yet..damn
Classic is no longer actively maintained or supported... but that has no bearing on your transaction times. That is most likely due to 1. relatively "low fees" used as default by Classic as it is old and 2.
the current network load...
The network has been crazy for a while now, and fees have been consistently above 200 satoshi/byte... I think classic defaults to something ridiculous like 50 sat/byte (assuming a minimum sized transaction)