Veritaseum uses only bitcoin, and subsists completely on the bitcoin blockchain. It is the only bitcoin wallet system that can trade simple and complex value structures without using non-bitcoin tokens, alt coins, sidechains or alternative blockchains. It can trade the value of over 45,000 tickers in all asset classes, from major exchanges from all around the world. At its essence, Veritaseum is a hyper-intelligent Bitcoin wallet system that is able to create and interpret smart contracts through the blockchain. It coordinates with an Oracle to gain access to conventional, physical and legacy financial data and information and uses it to price, value, trade and settle OTC, P2P financial instruments - all in BTC.
The Veritaseum platform, using nothing but pure bitcoin with no tokens or alternative internal currencies, moves the value of all that he mentioned plus much more (over 45k tickers), with absolutely no counterparty risk on a fully autonomous basis using smart contracts based solely on bitcoin script
It might be worth pointing out in these two posts.
Post 2 - claims no counterparty risk.