There are two main types of sharding for blockchains: state and network
State sharding is typically more difficult to execute but scales blockchains more sustainably than network sharding
Contrary to the belief that shard chains are fully functional, most shard chains are currently mainly utilizing a single shard for smart contracts to reduce the technical complexity
The eventual growth in shard chains can serve as a useful precursor for the development of Ethereum 2.0 shard chains
Footnotes
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