Stuart Popejoy & Will Martino, Co-Founders of Kadena: The Intersection of Public and Private Blockchains

— Stuart Popejoy and Will Martino, co-founders of Kadena, discuss their experience building blockchain solutions at JP Morgan before launching their hybrid public-private blockchain platform.

— JPM Coin is positioned as an internal settlement tool for JP Morgan's clients, designed to move value efficiently; it represents the evolution of earlier projects like Juno that demonstrated blockchain's value as an enterprise accounting system.

— Kadena's hybrid blockchain model combines a private permissioned layer (Scalable BFT) with a public proof-of-work layer (ChainWeb) to enable interoperability while maintaining security and scalability.

— ChainWeb uses a braided proof-of-work consensus mechanism that threads multiple chains together in parallel, achieving 100–1,000 transactions per second without increasing energy consumption proportionally.

— Smart contract vulnerabilities in Ethereum (exemplified by Parity Multisig and ERC-20 bugs) stem from Solidity's permissiveness; Kadena's PACT language prioritizes formal verification and safety by design.

— Proof-of-work energy consumption argument is overstated; mining relocates to regions with abundant, cheap renewable energy, and excess hydroelectric capacity far exceeds Bitcoin's actual energy use.

— Evaluate smart contracts by their formal verification capabilities and upgrade governance mechanisms, not just by code review; contracts without provable safety guarantees carry material risk of loss or theft.

— Recognize that adoption of blockchain technology outside tokenization remains nascent; most live smart contracts are copies of battle-tested templates, and broader use requires solving both safety and scalability simultaneously.

— Consider the hybrid blockchain model as a potential path to institutional adoption, allowing enterprises to leverage private efficiency gains while accessing public network liquidity and interoperability.