Nope, I'm not confused. I am few a bit unfamiliar with the terms/words. A few mistakes are there in my presentation in OP.
Thank you for the link. This is what exactly I was looking for.
As per the above formula, the circulation should be 20500000 approx after 2030. Is it correct?

As title says, how much BTC will be in circulation within 2030?
The current circulation is about 1800 bitcoin per day. How can I calculate the possible circulation within 2030?
I have come to know that within May 2020, the rewards per block will be halved and eventually, there will be 900 bitcoin in circulation per day. So, when will be the next halving?
Is there any calculator which help you to calculate the circulation of BTC?

Bitcointalk Name- RapTarX
Rank- Jr Member
Stake Name- RapTarX
Wear signature- Done
Personal Text Added

Edited the title. I already have used example of both of the wallet name. Missed pros and cons. I will list those too.

Included too.

In this article, I am gonna teach you what is a 'Full Node' and 'Light Node'. It's as easy as 2+2=4, but most of us aren't familiar with these terms either because of our disinterestedness or because of its complexity, although it's not complicated at all. I have taken a little help from the internet.
Source-
https://blockchain.wtf/2018/03/series/wtf-is/full-node-vs-light-client-whats-the-difference/

Full Node
If you understand what does it mean by the word "Full", you should probably have guessed now what is full node. Full node denotes to a wallet where user have to have downloaded the whole blockchain. If we are talking about running a full node for bitcoin, you must have to have downloaded all the previous transaction list. We usually call it synchronization. You have to download the whole bitcoin transaction record from the beginning, block 1 to until the up to date block. It will probably require you to have more than 400 gb free space on your disk. If you are using an wallet which asks you to download all the block, you are running a full node.
Prune Nodes can be used if you have lack of space, in that case, you can delete some of the block previously downloaded blocks.
Learn to reduce blocks- https://coinguides.org/bitcoin-blockchain-pruning/

Light Node
Light Node denotes to a wallet where an user can use bitcoin wallet without downloading the whole blockchain. In reality, it's not possible to use bitcoin wallet or any other crypto wallet without downloading the blockchain. Then, how light node functions? User have to trust someone who will download the up to date blocks.

Bitcoin Core is a wallet which can be a full node, Electrum is a wallet which is a light node.
In bitcoin core, you have to have downloaded all the blocks since the the beginning but in Electrum, you don't need to have downloaded blocks.
Remember, if you are running a full node, you are contributing to the bitcoin network for being more trusted, decentralized. We everyone who can afford should run a full node.

Pros and Cons of Full Nodes-
I wanna share an article- “Should I run my own node?” https://medium.com/bitstamp-blog/should-i-run-my-own-node-13c3f6a21627
The main pros of full node can be depending on yourself and help the network to be more decentralized. On the other hand, running full nodes eat a lot of space of your disk and you need to have been using an unlimited bandwirh service.

Pros and Cons of Light Node-
In a light node, you don't need to have downloaded all the blocks because someone else is completing it for you. You can run on a small disk even. On the other hand, in light node, you have to br depended on someone else's full node.

Congratulations on your achievement. It was a great encouragement toward our goal. Thank you for being an asset of the forum.
If you don't take it as meddling, there is a must read topic for you. You have used 'then' inspite of 'than'.
Must read topic- https://bitcointalk.org/index.php?topic=5108632.0

Thank you for the motivation for writing some more new topics. I joined some airdrop but it now is looking like wasting my precious time. I will try to contribute to the forum rather than hanging with bounty only.

utradecoin pays for each visitor you bring to their site (They don't give you ever). Payment method is- ETH
When someone reaches to minimum withdrawal and try withdraw ETH, they have to provide private key. Don't put your private key anywhere. You will be scammed.

Almost true, in some cases, the fork wasn't 1:1, BTX was 1:2. For each 2 BTC, you will get 1 BTX only. BCD was 10:1, for each BTC, you will get 10 BCD. But the majority of the forks were 1:1. In that case, he owns 250 units of all fork coin which is a paasive amount.

If you have no privacy issue, you can receive as many as transactions you want in a single address. People use more addresses so that they don't get traced. If you have to have hiden yourself, you can use Bitcoin Mixer.
Learn about bitcoin mixer here- https://bitcointalk.org/index.php?topic=5106873.msg49612116#msg49612116

Multi Signature mostly known as MultiSig is a digital way of safeguard your fund/holdings (cryptocurrency) in a contract. Imagine, three people wanna start a business and for that reason they have stored all of their bitcoins to one address. All of them are holding the private key. As per their contract, they three are the owner of the funds but as all of them have the private key, anyone of them can transfer the bitcoin to his personal address.

In traditional banking system, Joint AND account is kind of MultiSig account. During my little researching, I found an interesting topic about MultiSig reflection in traditional system. A guy wanna create an account with his girlfriend where both party's signature will be required to withdraw money. Worth reading for better understanding the system- https://www.reddit.com/r/personalfinance/comments/12hr45/is_it_possible_to_have_a_joint_savings_account/

Go back to the previous story, three people with their bitcoin. Since anyone of them can move the fund without others permission, multisig wallet can be created where signatures from rest of the party will be required.

One example taken from wikipedia-
For example: when Alice wants to pay Bob, she sends a transaction to a multisignature address, which requires at least two signatures from the group "Alice, Bob and Trent" to redeem the money. If Alice and Bob disagree on who should get the money (Alice wants a refund, whilst Bob believes he fulfilled his obligations and demands the payment), they can appeal to Trent. Trent grants his signature to Alice or Bob, so one of them can redeem the funds.

I have turned the feedback into neutral. I apology to mosprognoz if it hurts him. I will send him a PM regarding this.
kruglikov, you probably didn't notice that I asked for escrow for safe exchange.

Thank you for linking me there. First link shows reasonable for the fact Satoshi owns more than 1 million BTC, I can't access the second. I am trying to read that article from yesterday.

I googled it and found he/she own 1 million bitcoin. But I was unable to find out the addresses where his/her BTC is stored. Do you know all the addresses? Is there a full list of his/her addresses? Probably I have googled with wrong keywords.
Thanks in advance.

I apology to everyone if I have wasted your time. People are more likely talking about negative feedback as well as his contribution to the forum, but I only intended pointing out this that he bought an account.
Coolcryptovator, did he link you the bought account?

I found an article while I was completing my homework, author mentioned almost a total of 3380582 bitcoin was never touched since the its first transaction. He created a spreadsheet as well- https://www.reddit.com/r/Bitcoin/comments/2twrs7/all_42400_dormant_bitcoin_addresses_with_a/

Until now, the amount is approximately 4 million.

From Coinmarketcap, there are 17,530,775 BTC available in circulation. But what is the actual amount excluding the lost BTC? How much BTC have been lost until now? Is there any reported/proofed list of lost BTC amount/addresses?

LaGaulois has already created a thread listing most of the Mixer Services along with their fees. I will link up to that thread from my opening thread.
https://bitcointalk.org/index.php?topic=2827109.0

mosprognoz admitted in a thread that he bought an account to participate in a bounty campaign.
He admitted it here- https://bitcointalk.org/index.php?topic=5107674.0