In the Zilliqa technical white paper it is stated that the Zilliqa blockchain’s native tokens, Zillings, will be created upon launch of the Zilliqa mainnet. That creates a fungibility issue, making it unclear if ERC20 Zillings can be traded at the same rate of the native tokens when the Zilliqa mainnet launches. In addition to the sharding protocol for verifying transactions, Zilliqa claims to operate a proof-of-work protocol meaning that ZIL is a mineable token. The 21 billion Zillings will be mined over 6 years. Each 21 billion Zillings is further divisible by 12 decimal points, which means that 0.000000000001 is the smallest unit of a Zilling.