7 votes
Accepted

Why does script need to be purged from transactions for mimblewimble to work?

Scripts are used in Bitcoin to prove authorization to spend the inputs in a transaction. Mimblewimble uses a quirk of CT such that only the owner of a set of inputs can create the transaction in the ...
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7 votes

Why does script need to be purged from transactions for mimblewimble to work?

The incompatibility comes down to 2 main factors: Pruning: an important addition of the mimblewimble proposal is the ability to merge transactions across blocks. If transactions include scripts, ...
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  • 886
4 votes
Accepted

How does MimbleWimble avoid transaction graph leaks?

Yes -- although "without amounts or scripts" gives a clearer idea of what the transaction graph will look like: every output is a uniformly random curvepoint. This story is actually quite a bit better ...
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4 votes
Accepted

Transaction creation process is not non-interactive(Mimblewimble)?

It is possible to create MW transactions interactively, and if you're creating multisignature outputs I think this is actually necessary. But ordinary transactions can be created non-interactively (...
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3 votes
Accepted

What are the differences from the 2 main mimblewimble implementations, BEAM vs GRIN?

Given the alleged goal of creating a politically independent means of value exchange, the fundamental differences between the projects are extremely dramatic. Grin has no investors, and every aspect ...
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  • 91
3 votes
Accepted

How does Mimblewimble's security model compare to Bitcoin's?

Commenting on the overall security model is a much more complex answer as many moving parts are involved, from initial blockchain syncing to cut-through. But to answer your specific questions: ...
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2 votes

Mimble Wimble chain privacy

MimbleWimble isn't fully implemented, so this answer may change as implementations mature and we gain a greater understanding of the design space. MimbleWimble transactions may be published to the ...
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2 votes

What is the reasoning for Grin's high inflation rate?

See this page of the wiki for a brief set of reasons: https://github.com/mimblewimble/docs/wiki/Monetary-Policy
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  • 91
2 votes

Bitcoin privacy - current state of privacy BIPs - is mimblewimble broken?

Community, what is the current state of privacy related BIPs? CoinJoin related ones: Adam Gibson's SNICKER draft, which permits a simple unidirectional CoinJoin construction. BIP 79, Bustapay, a ...
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2 votes
Accepted

How could an inflation bug be spotted in grin?

Range proofs for CTs demonstrate that output amounts are positive and within an allowable range, and that no inflation is occuring in a non-coinbase transaction. The range proofs (eg bulletproofs) ...
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  • 2,433
2 votes

Litecoin implemented MimbleWimble extension blocks. Will Bitcoin adopt this privacy upgrade?

It's hard to make predictions about the future, but as of today, nobody has proposed adopting a similar MimbleWimble Extension Block in Bitcoin. Given the skepticism that previous extension block ...
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  • 64.5k
1 vote

MimbleWimble on Bitcoin

There is zero chance of it being used in Bitcoin. There is prior incidents to gain wisdom from. Before zcash existed as an altcoin, zcoin was an implementation of a similar concept which people ...
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  • 15.1k
1 vote

What are the differences from the 2 main mimblewimble implementations, BEAM vs GRIN?

The only detailed comparison I could find was this: https://tlu.tarilabs.com/protocols/grin-beam-comparison/MainReport.html which is, if summarized (by a computer): In summary, Grin and BEAM ...
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  • 9,849
1 vote
Accepted

What is the total supply and mining rewards of the BEAM mimblewimble cyptocurrency?

From the website: Beam has a capped total supply, standing at 262,800,000 total coins. Our emission schedule is as follows: First year’s block reward is 80 coins per block Years 2,3,4 and 5 - 40 ...
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  • 26
1 vote
Accepted

Who is funding the Beam mimblewimble development team?

BEAM had a private pre-sale, selling tokens to investors. They do not publish any of this information, but in their telegram and elsewhere there were estimates of 25 cents per token for a total of ~5 ...
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  • 91
1 vote

Who is funding the Beam mimblewimble development team?

There are many investors of this project. INVESTORS Lemniscap Investor of Beam Mimblewimble Node Capital is investor at BEAM Mimblewimble yeomans capital Investor of Beam Mimblewimble PROTOS ...
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  • 976
1 vote
Accepted

How does mimblewimble protect the chain state?

The proof of work is definitely not thrown away. All block headers need to be kept to prove the most work chain of headers. What is thrown away is what you would typically think as the content of the ...
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1 vote

What consensus algorithm is MimbleWimble/Grin using? Does it use Zero Knowledge Proofs as well?

Understand that MimbleWimble/Grin is privacy centric. Does it use Zero Knowledge Proofs to achieve the privacy goals? Yes. Zero Knowledge Proofs (specifically, Range Proofs. Possibly Bulletproofs in ...
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