Shielded Bitcoin is a proposal put forward by [[alloc] init] researchers Clara Shikhelman, Misha Komarov, and Aleksei Moskvin for a novel privacy metaprotocol on the Bitcoin base-layer to enable shielded Bitcoin transactions without requiring operators, soft forks or other changes to Bitcoin consensus. You can find the whitepaper here and blog announcement here. 

The protocol defines a transactional structure and indexing protocol for strong privacy-preserving transactions, while relying on Bitcoin PIPEs for pegging funds into and out of the system. More on the PIPEs mechanism at the end of the article. 

Its design is very much a mirror of Bitcoin’s; there is an equivalent…

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