Question: Is it possible to use DKG algorithm in smart contract?

[StackOverflowExcept1on]

frost/frost-core/src/keys/dkg.rs

Lines 18 to 23 in dcf1773

	//! As required for any multi-party protocol using Feldman's VSS, the key
	//! generation stage in FROST requires participants to maintain a consistent
	//! view of the pubic commitments to the secret polynomial coefficients. This
	//! DKG protocol requires participants to broadcast the commitment values
	//! honestly (e.g., participants do not provide different commitment values to a
	//! subset of participants) over a _[secure broadcast channel]_.

https://frost.zfnd.org/terminology.html#broadcast-channel
Can smart contract act as "secure broadcast channel"?

[conradoplg]

It depends on a lot of factors (How participants check which published commitments belong to them? How exactly the smart contract works?) but in general, yes, since it could provide an immutable public record of the commitments.

[pool2win]

How can we handle reorgs, if the chain that has smart contracts supports reorgs?

We just wait for enough confirmations?

[conradoplg]

Yes, wait for enough confirmations (It's not a particularly efficient solution.)

[StackOverflowExcept1on]

It depends on the blockchain, for example, there are blockchains with delayed self-execution of smart contracts.