Zcash activated its Ironwood upgrade, sealing roughly $1.7 billion in ZEC behind a one-way turnstile after a researcher found a flaw that could have minted counterfeit coins. Here’s everything you need to know. Plus, on Brand New Rails: POSCO International puts its trade receivables on-chain with LG CNS on Injective. CoinDesk's Jennifer Sanasie hosts Markets Outlook.