Problem: Missing testnet specific HD path and address prefix

[calvinaco]

Right now it is using cro prefixed address and the mainnet HD path all the time. To avoid confusion and accidentally spending mainnet funds in the future, we should support tcro and/or dcro prefix.

For the Testnet we are setting up, a quick solution could be to replace all cro prefix to tcro in master branch. In the future we have a more dynamic approach of doing so.

After discussing with @lezzokafka @allthatjazzleo , we have two potential long-term solutions:

1. Use Idflag to control the prefix on compile time, we will have multiple binaries for different network
2. Support runtime flag --network to dynamically switch between network

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Updated

3. Configurable HD path and prefix in genesis file (@yihuang )

[yihuang]

make the prefix configurable in genesis?

[tomtau]

Also the HD path?

[tomtau]

btw that "global prefix" config is going away in some future version: cosmos/cosmos-sdk#7448

[tomtau]

given the API around this is in flux (there may not be a "global config" in the future), maybe the option 1 is the simplest initially (later when the API stabilises, perhaps option 2), e.g. have prefix.mainnet.go and prefix.testnet.go with something like // +build mainnet and // +build !mainnet in their top?