Great. Lets do 1 bitcoin .

We each deposit 1 BTC into a taproot address with two spending conditions:

1. Time locked so that you can withdraw June 1st next year at a depth of 1 in the tap tree.

2. Time locked so I can withdraw May 1st next year at a depth of 128 in the tap tree.

If BIP444 activates, you get 2 BTC out of the address (because my spend path would be consensus invalid).

If BIP444 does not activate, I get 2BTC out of the address.

We can modify the dates if you wish. Lets do it.