The Shielded Bitcoin paper is no competitor to Zcash, which keeps its lead in base-layer privacy. The paper relies on a trusted setup, lacks consensus enforcement and trustless light clients, leaves its bridge unspecified and pays Bitcoin L1 fees. Zcash has a shielded pool of more than $7B with millions of transactions to hide in, about 10 years in production, and the wallets, audits and hardware support; privacy works best when built into the base layer. x.comÂ
