Arcium extends what Zcash started but turns privacy into an infrastructure layer instead of a niche product. It plugs into existing chains like Solana and soon EVM, letting apps stay public while keeping sensitive data private. That’s a major shift, privacy that composes, not isolates. Zcash proved there’s value in encrypted money, Arcium applies that to everything from AI training to financial data. If ZEC was Privacy 1.0, Arcium looks like the system upgrade for builders who actually need it to scale.