The Helena project is no longer operational. We keep this information for historical purposes, with the idea that this case-study can inform new future prediction market platforms on xDai.
The Helena Network was a prediction market running on the xDai Chain. Daily transactions are conducted on the xDai chain to keep gas fees low, and data is synced with the Ethereum mainnet on a regular basis.
A list of open prediction markets on Helena Network application
xDai: The xDai token is pegged to Dai, providing a stable asset for all smart contract interactions. Fixed fees mean 1000s of transactions can be performed for less than $.10