Researchers have proposed a method for adding a 'shielded' privacy feature to Bitcoin, similar to that used by Zcash.
Source
"Zcash-Style Privacy Feature for Bitcoin Takes Shape" — CoinDesk
This article is Bitcoincryptos' summary and analysis of reporting originally published by CoinDesk. Read the full original report at the link above.
According to the researchers, their system enables private transfers of bitcoin without requiring any modifications to Bitcoin's underlying rules.
The current method still has limitations, however, as it doesn't allow users to lock up real BTC and release it again.
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