Smart contract security startup Synthetic Minds has raised $5.5 million from investors including Pantera Capital. : San Francisco-based smart contract security startup Synthetic Minds has raised $5.5 million for its bid to roll out a technology that analyses blockchain networks for coding bugs. Announcing the news on Monday, Synthetic Minds said the round was backed by blockchain investment firm Pantera Capital and Khosla Ventures, a California-based venture capital firm focusing on internet startups.