如题。详见这里： https://github.com/bitshares/bitshares-ui/#development-process
We pay bounties for issues that have been estimated. An estimated issue is prefixed with a number in brackets like this: [2] An nasty bug. In this example, the bug is valued at two hours ($125 per hour). If you fix this issue according to these guidelines and your PR is accepted, this will earn you $250 bitUSD. You must have a Bitshares wallet and a Bitshares account to receive payment.
也就是说，在项目页面里列出来的任务 ，前面标了数字的，数字代表任务预计需要花费的小时数，按质量要求完成的话，可以赚得每小时 125刀的报酬。