SIP-5: Create a pool of mining rewards for Brubeck testnets

As part of rolling out the Brubeck milestone for the Streamr Network, we will organise a series of public testnets. People can participate by downloading a special testnet release of the Streamr Broker node software and running it for the lifespan of the testnet.

There will be at least two testnet rounds: the first testnet will have a lifespan of 3 days, while the final testnet will run for 14 days. Additional testnet iterations may be added to the schedule, depending on whether any problems arise in the first testnets.

This proposal is about creating a pool of tokens to be mined by the testnet participants. In other words, people who successfully run a Broker node and have sufficient uptime in the testnets will earn DATA token rewards.

Furthermore, it is proposed that the rewards will be based on a bonding curve, so that more nodes in the testnets means more rewards earned by each node. This incentivises existing participants to tell their friends about it and help them participate too.

• The proposal is to mint a maximum of 2M DATA for the Brubeck testnet mining rewards pool (0.1% of the maximum supply, and a 0.2% increase to the circulating supply)
• Unutilised tokens (tokens that are not earned via mining the testnets) will never even get minted, leading to the supply increase being less than 2M DATA.