just asking ,  i think they dont ,  and maybe bitcoin  needs exactly  this  to make an transfer  kinda bank wallet..  its like if i pay  with ec card in a shop  the shop  dont let  me wait in front of the cashier  til the bank transaction  is done ... so  do bitcoin need numbers in each satoshi  somehow    is that even possible ??

thank you for your ideas

if yes , than  lets build one for the people 

1. max supply   should be  5 mio  coins  to catch up with btc price
2. lets call it  bitcash, bitgold or fastcash  or something like one of the cool names...
3. transaction must be like  3sec fast    for realworld shop use example
4.  let it be backed  by books  who contribute  books will be rewarded or something like this ..


good luck

peace

thats just a question??    peace