I found your question on state channels fascinating. I’ve experimented with microtransaction models, and what I’ve learned is that Sui’s object-centric design* makes off-chain state commitments particularly smooth.

My typical pattern:

1. A shared escrow object is deployed on Sui.
2. Users transact off-chain, signing state updates.
3. Only the final agreed state is submitted on-chain to close the channel.

Here’s a simplified skeleton:

module payments::channel {
    use sui::object::{Self, UID};
    use sui::tx_context::TxContext;

    struct Channel has key {
        id: UID,
        party_a: address,
        party_b: address,
        balance_a: u64,
        balance_b: u64,
        open: bool,
    }

    public fun open(a: address, b: address, deposit_a: u64, deposit_b: u64, ctx: &mut TxContext): Channel {
        Channel {
            id: object::new(ctx),
            party_a: a,
            party_b: b,
            balance_a: deposit_a,
            balance_b: deposit_b,
            open: true,
        }
    }

    /// Submit final balances after off-chain agreement
    public fun close(ch: &mut Channel, bal_a: u64, bal_b: u64) {
        assert!(ch.open, 0);
        ch.balance_a = bal_a;
        ch.balance_b = bal_b;
        ch.open = false;
    }
}

The actual state evolution happens off-chain, secured by signatures. On-chain logic just validates the final snapshot.