As I understand, Peercoin and its cryptocurrency brethren all depend on one very important factor, the blockchain, in order to remain in a decentralized state. However, in only a few years Bitcoin’s blockchain has become difficult to distribute, resulting in more and more “light” clients that use Bitcoin but don’t actually function as nodes for the network, leading to a network that looks less and less distributed over time (taking adoption into account). Does Peercoin or any other coin take this factor into consideration with the future in mind? In only a few years Bitcoin’s blockchain could become more and more popular, resulting in it closing in on it’s maximum blockchain addition of 144 MB a day, about 52 GB a year. Assuming Bitcoin never increases its blockchain data limit, the blockchain could still reach over a TB in the years to come.
While data storage is becoming exponentially cheaper and more efficient over time, the Internet and computer technology in most of the world is still relatively poor. How will cryptocurrencies still remain to be widely decentralized via the blockchain while requiring all full nodes have a storage drive devoted entirely to storing a coin’s blockchain data and having a large bandwidth allocation to receive and transmit?