[Cryptography] Bitcoin theft and the future of cryptocurrencies

[James A. Donald]

On 12/27/2017 6:04 AM, Karl wrote:
> On 12/26/17, grarpamp <grarpamp at gmail.com> wrote:
>> Coinjoin, Monero, swaps... all just mixes.
>> Zerocash... cryptographic privacy.
> 
> The new hot "anonymous cryptocurrency" people discuss is
> MimbleWimble/Grin.  I'm surprised nobody has mentioned it.

Last I heard, MimbleWimble was an idea, not yet a cryptocurrency.

Pretty cool idea ... but:

Suppose HHitler puts a wallet address on his website, and asks for 
donations.

Ann sends a donation from her coinbase wallet.  The true name associated 
with he wallet is known to the authorities.

Seems to me that the authorities, monitoring the MimbleWimble 
blockchain, will be able to tell that Ann gave a donation to HHitler, 
even though they cannot tell how much.

MimbleWimble greatly reduces the storage problem, but not obvious that 
is solves the bandwidth and speed problems.