Castle Island is a venture capital firm focused exclusively on public blockchains. They invest in infrastructure and application companies that will enable these transformative protocols to power services for the next billion users.
Project Eleven is is applying post-quantum cryptography (PQC) to existing protocols, starting with Bitcoin. This will ensure they remain secure even when classical cryptography fails. Its first solution is yellowpages, a post-quantum proof of Bitcoin ownership that allows users to instantly generate quantum-resistant keys and securely link them to existing Bitcoin addresses.
Try Your Best (TYB) is a blockchain rewards startup that uses blockchain technology to help brands build customer loyalty. Through TYB, these brands can reward their customers for participating in the community with virtual coins, similar to loyalty points, that they can exchange for physical products.