If you want to be taken seriously as an online wallet then do what every other currency depository does - tell the public about your 3rd party deposit insurance

If you want to be taken seriously as an online wallet then do what every other currency depository does - tell the public about your 3rd party deposit insurance, and tell your insurer about your security. Anyone unable or unwilling to secure insurance has essentially made their advertising slogan "we might as well rob you ourselves"