ℹ️ A sync payment channel implemented using funC, fift and Go.

We implemented not only a smart contract and wrappers for it, but we built a peer2peer client. We will be happy to get any feedback from other participants and wish luck to all of you!



Good luck, guys!🌏

We have updated our smart contract. Currently it is possible to use only 1 cell to store all the state. You can see it on github

https://github.com/button-tech/ton-sync-payments-channel

plus:
Great infrastructure. It was nice to test and it even worked from the second attempt.

There are some corner cases that are not handled in a client. For example, on my first attempt, both dockers eventually exited and funds stuck forever on the smart contract. But It did enter some invalid input.

I should note that this is the only submission with a prototype of a real client. And the only submission with a presentation included.

state hash includes contract address. So one can't reuse signatures between different smart contracts.

accept_message called only at the point when no exceptions could be thrown.

Overall smart contract logic seems to be correct.

questions/minus:
What prevents the second user to invoke get_money_back and receive all money the first user put?

ifnot(contract_status == 0x1ee564fc) check is reduntant.

first_user_address_signature could be reused in different contracts.

Д