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Litecoin’s MimbleWimble via EB to bring fungibility, privacy: Charlie Lee

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Litecoin's Charlie Lee says fungibility first, confident about MimbleWimble via EB

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“I see less about privacy and more about fungibility. So I think in order for Bitcoin and Litecoin to be like useful money it really has to fungible,” said Litecoin creator Charlie Lee when enquired about the need to implement privacy protocol MimbleWimble when there are existing privacy coins such as Monero, ZCash, Dash, etc.

Lee, who appeared at the latest episode of Grin Talk further alluded that privacy was “a requirement to fungibility”. He further said:

“what we’re proposing an opt-in kind of privacy when we’re using MimbleWimble on an extension block so you can think of extension block as a sidechain to Litecoin that is effectively permanently attached to the main-chain, so each main-chain will have there will be an extension block with it. In the extension block, every transaction is MW. On the main-chain nothing really changes, so you can move your coins back and forth within the chain pegging into the extension block and pegging out. So if you want more fungibility, you would send you coin to extension block and from that point on, it uses MW”

This was very similar to the privacy focussed Grin, and according to Lee, users get both “financial privacy as well as more fungibility”.

Litecoin Foundation pitched its draft proposal on MimbleWimble implementation through Extension Blocks [EB] recently. This involved the Litecoin creator working with a Grin developer David Burkett which prompted many in the community to think that the cryptocurrency could be revamped as a privacy coin.

This subsequently led to concerns regarding delisting from major exchanges, at a time when delisting of privacy coins like Monero, ZCash, and Dash had become a trend in many Asian platforms like Upbit and Coincheck. Lee stated:

“I’m pretty confident they’ll be okay… we won’t know until we actually launch this but I think the way we’re doing it is would work well with exchanges in regulation”

Lee was positive about the new opt-in implementation and was confident that the platforms will treat it as the “status quo”. Speaking about the difference between what Litecoin proposed and Monero and other privacy coins was the “opt-in” nature.

He stated that exchanges might not even support extension blocks, and added that they would probably just support the mainchain where transactions will be transparent. In other words, exchanges can choose to stick with the Litecoin chain.

A key distinction between MimbleWimble-powered LTC and privacy coins in addition to one chain for public transactions is that there will also be a separate chain for private transactions, as earlier explained by¬† Litecoin Foundation’s Community Manager Ilir Gashi, which should keep the coin away from unwarranted scrutiny of regulators.


Chayanika is a full-time journalist at AMBCrypto covering the US and UK markets. A graduate in Economics, and majoring in Political Science she focuses on the impact of regulations across different geographies.
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