You spelled out well your value, add solution. I hope your method is super effective against attacks. Have you tried to court the EOS team to use your service?

51% Attacks. DDoS Attacks. Attacks through gaining profit from fake activity

These are probably the most important issues you outlined. 51% attacks have happened as you mentioned on Ethereum back in the day and are still possible, hell maybe one day if a supercomputer big enough could possibly do it to Bitcoin. It's crazy the fake spending that was done on Zcash. I'm sure with your method you could of prevented these. Thanks for the share!