Shapeshift has evidently implemented mixin of 3 when someone buys XMR with BTC or another crypto.
From Shapeshift rep
Hi there! Just wanted to let you know that the team actually had a little time and was able to make the mixin 3 changes you requested. Please feel free to get the word out! Have a good day
Our efforts to persuade them to do so have paid off.
Kudos to them and to those who also communicated with Shapeshift (Ginger Ale, et al).
Fantastic work Sw00p, GingerAle, Shapeshift, etc! Not only does that make shapeshift.io a more useful service but it improves the health of the network by increasing the amount of mixing on the blockchain. Well done.
+1
This does remind me of the same mixin issue a while back with Poloniex. Has that been resolved? Based on my memory their reason for mixin = 0 instead of mixin = 3 was because of the cost of dealing with dust transactions from people mining to Poloniex directly.
Of course people should not mine directly to any exchange for several reasons. However how should we advise Poloniex to deal with this? Ban deposits below a certain size? Increase transaction costs (to pay for higher cost of mixin = 3)?
Awesome news on the mixin! I feel sheepish for being called out on doing something, but that could just be the imposter syndrome talking. All I did was test a transaction.
re: poloniex - yeah, as far as I understood it, poloniex has a lot of dust due to direct to poloniex miners sending tiny amount transactions.
The eventual MRL4 implementation will fix this problem (because the protocol won't allow <2 mixin transactions).
( I actually had this whole tirade about mining directly to poloniex wallets and that we should all move hash to pools that don't allow this, then I investigated each pool, and found that there's only 1 pool that allows mining to exchanges. The rest of the pools, listed here, don't allow mining directly to exchange as far as I can tell.
http://mro.poolto.be/#getting_startedhttp://cryptonotepool.org.uk/#getting_startedhttp://hashinvest.net/#getting_startedhttps://moneropool.com/#getting_startedhttp://moneropool.ru/#getting_started - not sure, russion
http://xmr.prohash.net/#getting_startedhttp://xmr.unipool.pro/#getting_startedhttp://xmr.crypto-pools.org/#getting_startedhttp://monero.net/# - No idea, not mentioned
So, the mine directly to Poloniex is not the reason Poloniex can't implement mixin 3.
Or move our volume to another exchange. Poloniex is enjoying its status as the ONLY real volume XMR exchange. In one day - ONE DAY - april 28th, the xmr volume on Polo was 188,721 XMR. 0.2% to sell. 0.2% to buy. A total of 0.4% fee. So in that 24 hour period polo made 754 XMR, which at 0.002 btc / xmr is 1.5 BTC.
over the entire past month (my method was spanning to 1 month, putting 24 hour candlesticks, and hovering over and putting the "volume" data into excel)... the total amount of XMR exchanged on polo was
1 688 626, and at 0.04% gives 6754 XMR in fees,
which at 0.002 btc / xmr is 13.5 btc, or at current value of 236$ / btc is roughly $3200.
And April was a low volume month compared to March! My point is they are siphoning off $3200 a month and they can't figure out how to get the mixin up?
but, the other exchange that I know of (bittrex) is also mixin 0, so currently the only option for BTC <-> monero exchange with mixin 3 is ShapeShift.
And
https://getmonero.org/getting-started/merchantsshould be updated, because Melotic does not offer XMR exchange.