I'm currently working on a p2p framework to train with neuroevolution, it will have neat, hyperneat, and eshyperneat example experiments. AI developers will be able to fork and add any experiments they want.
It isn't a blockchain per sé but will have a dht for genes, champion nets, peers of course, and genomes. Neuroevolution training can be done in parallel so the population will be distributed evenly among peers, peers that finish early will help slower peers with their evaluations, and all peers will have a check on one of the nets they evaluated by a random peer to prevent malice and all peers will check the champion of each generation. Any peer that evaluates a net will be rewarded a token that is specific to the generation it helped train and will also download a copy of the champion net, later I plan to allow non training clients the ability to view performance of past champs and purchase them from the network, any peer with a token for the genome they purchase will receive part of the payment. This will not be proof of stake, it will be a proof of work where work is evaluating nets, since this needs to be checked by other nets so people don't just post phony fitness for genomes I'll be calling it proof of fitness.