"It doesn't matter how many addresses you use -- they're all derived from the information on that paper backup!"
I've a question about paper backup, as there is nearly a new address created for each transaction we can reach a pretty good amount of address inside one wallet (on the example screenshot we see 50 address). Is there a limit on how many address one (paper) backup can restore ? There should be a limit otherwise every wallet will had to "reserve" all possible address in order to be sure that no one use the same address that you could potentialy "create or release (?)" from on wallet in the future.... Not sure to be clear.
There is no limit. The paper backup produces an
essentially infinite chain of addresses. The solar system will collapse on itself before you could generate enough addresses to risk generating the same private keys as anyone else.
Go ahead and use a quintillion addresses (if you have time to generate that many). You are at no risk of collisions. And all will be protected with the paper backup.