Wallet will hold the addresses of the coins you own.
Coins are actual data objects in the network.
Since the coins are actual data objects the concept of "paper wallets" don't really apply to safecoins
If a coin belongs to you then your wallet has the keys to operate (transfer coins)
So a "paper Wallet" would be a copy of the coin addresses and copy of the keys. There will be no way to show all the coins owned by an address like one can do with a blockchain explorer. The only way to attempt would be to query every coin address, but that would take too long to be feasible.
Wallets have not yet been defined. There are a couple of ideas proposed. Basically the wallet holds the addresses of the coins owned by you and allows you to transfer coins to another address
Coins are issued as rewards for serving up chunks requested.
Coins are destroyed when paying to store chunks.
The network dynamically determines the cost for storage and reward amounts. The algorithm will need to be tuned but should balance out over time. Total coins will increase early on, but issued coin will slow as the # of coins existing increases. Eventually the supply/destruction will balance out as people use it.
The reason is that coins are issued by trying to issue a particular coin address and if the coin at that address already exists then it cannot be issued. Some call this the "lottery" aspect of rewards. As coins are destroyed when paying for network resources it means more coins are available to be issued.
Increase of total coin over time should not see a price decrease as the coins are used to pay for storage so they have utility, unlike BTC. Yet BTC price increases over time even though its total issued coin increases.
The coins are physical data objects, so any fork of the coin really means a fork of the network and that means multiple networks and only the original network has the coins (data objects). This involves people storing there data on one or the other network, or duplicating their data. Crystal ball anyone?
The new network starts off with no coins, unlike other blockchain forks.
Basically it seems that only specialty forks will be able to exist along with the global public network. Having multiple global networks will have all the issues of isolated networks and special interconnects. This is one reason we have only ONE internet and other specialty networks (eg corporate networks)