50% of the trade log (in appendix 2), containts positions which require shorting on bitstamp.
However you cant short on bitstamp, so how would you do this?
Because otherwise half of your appendix 2 is false information.

the whitepaper discussing their trades: https://www.rialto.ai/wp-content/uploads/2017/06/RIALTO.AI_Whitepaper.pdf \
appendix 2: https://www.rialto.ai/wp-content/uploads/2017/06/Appendix2.pdf