Mining on smart contracts

[Karl]

On Thu, Jun 3, 2021, 11:46 PM <JohnWilliamJohnson at 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?
https://ethereum.org/en/developers/docs/standards/tokens/erc-20/

ERC-20 tokens are pretty popular and have a big exchange economy already.

>
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