On Thu, Jun 3, 2021, 11:46 PM <[1]JohnWilliamJohnson@secmail.pro>
   wrote:

     > Rereading, I think you might actually be talking about the use of
     > blockchains for real work.  Sorry for misinterpreting.  Sounds
     helpful to
     > do that.  Which chains have workable smart contract systems?  I
     hear
     > ethereum is too expensive for a lot of tasks.
     >
     Mining of altcoins that do not have their own blockchain can be
     implemented in several ways. You can do a sharding, something like a
     lightning network. But it all depends on what the production of
     altcoins
     and their cost will be built on.

   How does this differ from in-chain tokens like
   erc-20? [2]https://ethereum.org/en/developers/docs/standards/tokens/erc
   -20/
   ERC-20 tokens are pretty popular and have a big exchange economy
   already.

References

   1. mailto:JohnWilliamJohnson@secmail.pro
   2. https://ethereum.org/en/developers/docs/standards/tokens/erc-20/