He has already tried to reach forum account but no luck since the account isn’t much active.
OP, I think you should post this issue on their ANN thread if you have not already. This may help you to gef their attention. They used to be trusted to me as well but the way you are referring, it seems selective scamming after gaining enough trust. By the way, you can try Chipmixer or blender.io, these are some good and trusted mixer.

I guess we are talking about a mixer.

My bad, I thought it's okay to create a flag in such a risky situation. I will now delete it.

That's very easy to guess what's going to happen if someone trust the guy. I guess tagging the guy and creating a flag would be a good alert for anyone attempting for a trade with him.

I have created a flag- https://bitcointalk.org/index.php?action=trust;flag=1328

Why would someone believe a newbie who has no trading history; there are a lot of trusted Bitcoin mixer incuding Chipmixer, blender (which is in my signature), smartmixer etc.?

As above said, coinbase to coinbase is free of fee because it's taking place offchain.
Since, it's offchain and taking place on their platform, you can send as lower as 1 satoshi or 0.00000001 satoshi as well. I have checked for the sake of you  Someone I know will be surprised why the hell I have sent him 1 satoshi 

Almost all the wallets and most of the exchanges support native segwit "bc1" addresses. Some may not support though. It depends which wallet the sender are using(May not support in some web wallet or if the sender is sending from an exchange which is may not compatible with native segwit). It's not mandatory to have segwit for sending BTC in a segwit address. You can send BTC to segwit, legacy from any of them and receive too in general.

I'm not going to invest in such coins which have less liquidity/volume, no much exchange etc. I have set up my criteria for choosing coins-
1. Must be listed in Binance.
2. Must have listed 1 more exchanges which is well known.
3. At least $1 million Volume per day.

The first negatively correlated which I'm thinking of investing is- dock.io, it has an average of $1 million volume and listed on exchanges like Binance, Kucoin, Huobi and so more. Another one can be VeChain which has a volume of more than $50 million on average. These are not fixed yet. I'm closely looking into coins and trying to pick two best. The list you have given are totally shitcoin and I'm not going to invest in such coins of course.

If correlation factor would work in crypto & someone would invest in negatively correlated coin with ETH, they would never face such huge loss at the first place. Talking to ETH at 0.09 BTC wouldn't be much of hard once BTC hit ATH and alt started to gain weight but who knows, ETH supply has increased a lot as well.

I will share you guys which coin I will pick & let you know the update weekly if possible or monthly.

My bad, I wanted to say Bluewallet don't have lightning network but somehow said they didn't develop iOS. In bitcoin.org, the data isn't updated. When I tried to filter the wallet for iOS operating system, the lightning network option is disabled. That's why I thought Bluewallet don't have lightning network on iOS. Check the image below. That's what I get when I filter with iOS operating system.

Negative correlation refers to if BTC increases, A will decrease, if BTC decreases, A will increase. I guess that's what I'm looking for. Well, the result is limited to last 100 days.

That would be good. I have to do some extra work; that's not something hard but lot of works behind the scene. I guess I can do it without finding out the correlation between both the investment. Rather, I would put $100, $50 in BTC in $25 for each altcoin. It's the same thing, isn't it?

The algorithm is simple. As I said above, they just have had some math on the last 100 days & based on that, they have calculated the correlation.

That's exactly what I'm looking for. If I lose something in project A, that will be covered by project B. Of course, both the profit and loss will not be same. There might be a different and that's what I will realise. Not much risk, not much gain.

Lol, it would be an experiment for me. Wouldn't go for much at all. I am really now more excited after getting the price update on 2 of the negative correlation altcoin; which more or less following the negative trend- that's from 2 days data though  

Thanks and yeah, diversifying into another asset is of course good idea. Actually, I'm trying to have an experiment if it works at all or not. I'm trying to diversify the risk from same industry. It's a well known practice in traditional stock market but I don't know if anyone ever tried in crypto; of course did since we have the site to get the correlation factor.

Well, the chance of the method to be effective here quite low though. In stock market, we might have seasonal things which can affect a certain stock positively in a certain period while other stock may be affected negatively in that period. Since, in crypto the real use too low, I guess it won't much work. I will of course have a try through following the correlation factor of the site shared in OP and let you guys update later about the output.

I guess Bluewallet hasn't developed iOS version. I might be wrong though. When I tried to find out wallet which support LN, I didn't get any for iOS version. I have checked through the wallet list suggested by bitcoin.org, would love to have suggested a LN supported wallet for iOS if any.

Lately, I am thinking of spending more time into trading. Until now, I was a part time trader (actually holder) looking into only a few top ranked coins. Now, I have decided to go deep and try to make some profit.

Let's get back to the topic.

In theory, in traditional stock market, if we invest into two negatively correlated share, the risk are minimized because if for instance; Stock A's price increase, stock B's price will be decreased as both of these are negatively correlated. As a result, investor will realize minimum risk; profit is lower as well. The goal of such investment is to minimize the risk as much as possible. Since the cryptocurrency market is highly volatile, if we choose positively correlated or only one crypto to invest in; the chance is we may lose half or more value of our investment; hence, in theory, negatively correlated can save us from losing the investment in a significant value.

I have got this site providing correlation of different altcoin against bitcoin- https://coinpredictor.io/altcoins

Let's say; Coin A has a positive correlation of 0.89 against BTC price & Coin B has a negative correlation of 0.89 against BTC price.

Are we safe to say investing on both these coins are minimizing the risk; provided that I will have a good research on both these projects to ensure that these are not shitcoins? Ignore the fact that all coins without BTC is a shit (Note for bitcoin enthusiasts).

It won't take more than a hour to set up everything he needs. It only requires him to create a channel and increase the inbound capacity (to receive payments). Creating a channel requires 5 minutes. I have shared tutorial above and you can check that. It's not that much of hard as you are thinking.

Your questions aren't clear. What are you referring to?

Since you have got a pet shop, I guess it's better if you start accepting bitcoin through Lightning Network; best for micro payments. You will get-
- Instant Confirmation (You are unlikely to wait for confirmation.)
- Low Fee (Your customers are unlikely to pay higher fee for a small transaction.)

Lightning Network can be the best solution for shop you referred.

If you need to learn more- A Beginner's guideline to Bitcoin Lightning Network
More interested; try Lightning Network with testnet BTC- [Tutorial] How to create Lightning Network Channel (Testnet BTC)
If you have got some questions to ask, don't hesitate. Go to the thread I referred & share your query; will gladly assist as much as we can.

Zyklon B which is a chemical invented for pest control in agricultural fields and factories which later used for genocide during World War II by Nazis. https://www.thevintagenews.com/2015/12/09/10-deadly-inventions-in-history/
The things that we must understand is every system has its good and bad effects. Mixing sites are good for people who want to keep their financial activities secret from prying eyes; it's being used by hackers and for that reason, it won't be a good idea if we stand against mixing- just saying.
There are some exchanges who run mixing service as well; no certain info but it's possible.

Either way, you can't stop hackers to hide themselves. We have Monero where "No transaction without privacy" & other privacy coins as well which can't be traced.

Good to see my article has been suggested 

It's around 250 including sub-boards of sub-boards from different local board and I have received merits from at least 15 different boards; there's no lack of merit circulation I have observed ever. The same is also going on other boards I guess. More or less I have visited most of the boards of the forum other than the local.

If they don't deserve merit, I guess the number of merit source is sufficient but if they deserve but not getting merit; that's when we can conclude that it's not sufficient. But I can't remember when last I have seen a post which deserve merit but didn't get.

There are around 100 merit source at the moment. Current number of active users in each month wouldn't be more than 50k(guess). Although there are a lot of posts are generated, I doubt one-fourth of that are actually high quality and deserve merit.
Taking myself as an example-
I'm mostly active in Beginner's board. Some merit sources are active there and share smerit consistently. In my local, there's 1 merit source and he is more or less (enough) active in sharing smerit. In fact, boards where I'm active, I never feel the lack of smerit.
The circulation of smerits are much bigger. Not only merit sources, a lot of members also share smerits. I guess we have enough of merit sources and circulation.

If you think any particular board isn't getting enough smerit, you can bring some good quality post and apply as a merit source. Theymos will certainly take a look.

In android/IOS section of bitcoin wallet, you have suggested blockchain wallet which I guess will be very much misleading for the newbie because we have far better mobile wallet for BTC. You might get interested in my thread- An Overview of Bitcoin Android Wallet
Although they are a centralized organization, they give you the control of your fund; private key so that you recover anytime from any other compatible wallet. Blockchain.com is a Custodial Web Wallet

Freewallet support USDT, I guess most of the multicrypto wallet must support USD.
https://freewallet.org/usdt-wallet

There's a thread started by LoyceV and it has already got enough support from the merit sources. Some of the merit sources used ro check that thread and merit oost if they think the post deserves. Everyone can report a post there- self-moderated] Report unmerited good posts to Merit Source
There is one more thread which I can't find out at the moment, where merit sources share merit to member who is lack of some merits for next rank up.

You said it's accepted worldwide. Can I know if I can use it in India? For your info, in India, cryptocurrency isn't banned yet but banks are not allowing cryptocurrency dealings and it's frowned upon here. No banks after RBI announcement is cooperating anymore. I would love to use one.

Depends on which mining pool you are talking about.
People used to mine with a pool because the device they have can't generate any output at all. As a result, they mine through pool and it gets easier to find block, which: the reward, is distributed among all the contributed users.
Now, you have to ask question about specific pool. Some might be scam too.