If you haven't heard already SweatCoin have an app that rewards you in digital currency "SweatCoin" for verified outdoor steps (it verifies on a combination of pedometer and GPS data)
They claim a centralised issuing model as they have to be sure that the steps counted are genuine. But use a decentralised "blockchain based" platform to transfer coins between users.
It doesn't seem to be exposed to the public if it is block chain, maybe this is on their roadmap.
You can currently send coins to friends. So why not start a sweatcoin collective and work towards the 2,100,000 verified steps you would need to claim the £1000 of paypal credit that is currently available in their store for 20000 sweatcoin(it says Christmas offer but is currently still available)
Anyone interested?
We could add each other on sweatcoin and keep each other up to date on overall progress to the goal here.
Then split the paypal credit based on sweatcoin contributed