On-chain contract

The Bounty on-chain contract is implemented using Marlowe (opens in a new tab), in which a party (the Maintainer) can make a payment to another party (the Contributor) by locking funds in the contract and delegating the responsibility of unlocking the funds to a 3rd party (the Bot).

Each bounty is it's own independent contract, usually refered to as peer-to-peer contracts. Marlowe contracts provide several guarantees as part of the language design, but having one contract per bounty limits the blast radious of any security issues, which is a very good quality to have.

The bot is reponsible for submitting the contract on-chain and will initially hold the role tokens for each of the other parites.

The Maintainer will first make a deposit into his account. After some external criterion is met, the Admin can unlock the payment, moving the tokens from the Maintainer’s account to the Developer’s account, and closing the contract. After this, the Developer can withdraw their payment.