TLDR Crypto · GUIDES & TUTORIALS

DO BITCOIN MAXIS HAVE A ZCASH ANSWER?

links.tldrnewsletter.com5 min read

Summary from the TLDR Crypto newsletter

"Shielded Bitcoin" is a metaprotocol that ports Zcash's encrypted-note, ZK-proof privacy architecture to Bitcoin L1 via OP_RETURN data envelopes, requiring no soft fork or sidechain. The design defers trustless peg-in/peg-out to a future paper, leaving the bridge problem open, and depends on Bitcoin Core v30's relaxed OP_RETURN relay policy. The paper arrives as ZEC has climbed ~2,500% over the past year to a ~$26B market cap (ranked #9), with Grayscale's ZCSH ETF drawing $250M+ in net inflows since August 25 and public ZEC holdings disclosed by Paradigm co-founder Matt Huang and Multicoin. Citrea (Galaxy Ventures) acquired privacy wallet Crest to target the same problem on Bitcoin L2, while NEAR Protocol rolled out confidential perps and limit orders by default, with both teams citing AI-powered surveillance tools, including LLMs re-identifying pseudonymous users, as the core demand driver.