embedded-wallets
(3)
The Company That Locked Up the Keys - Then Let Anyone Prove It
Two ex-Coinbase engineers got tired of fighting key-management software, so they built the plumbing that now signs millions of crypto transactions a week - and made it verifiable, not just trusted.
Fireblocks
Fireblocks began with a $200 million crypto heist and a stubborn question: how do you move digital money without handing attackers the keys? Eight years later, its answer has become an operating system for institutions moving value onchain.
Cubist
Cubist is a security-first Web3 infrastructure company that builds hardware-backed key management and confidential compute for digital assets. Its flagship platform, CubeSigner, keeps cryptographic keys sealed inside secure hardware (HSMs and AWS Nitro Enclaves) while giving developers low-latency signing through revocable sessions and a programmable policy engine - resolving the old tradeoff between cold-wallet security and hot-wallet speed. Founded by applied cryptographers and security researchers from Carnegie Mellon and UC San Diego who designed primitives underlying Ethereum and Avalanche, Cubist serves staking providers, DeFi protocols, bridges, and institutions building on internet capital markets.