I have over 35 years experience; but even if I only had a few months experience, you don't need to read the code on the LN, you only need read the proof above, and then realize that all the big centralized crypto exchanges are being locked down and tracked where you now have to get a proctology exam to exchange their fiat currency for crypto , and then also realize that the push for segwit is run by the most nefarious psychopathic group on the planet, that have the most to lose, and in fact it is very likely they may actually run the governments. They will try and get the masses on to the LN, because that isn't Bitcoin. Once you are making purchases in the LN, they will keep you off the Bitcoin blockchain, you will not have more addresses on Bitcoin like Satoshi recommended because it is $20 every time you move Bitcoin between those addresses, so NO ONE is going to want to do that EVER. If anything people will do a one time buy, and pay the $20 or $40 because probably 2 transfers, at their exchange that tracked their buy and then stay on the LN from there, with everything being tracked from that point.... address resuse will be the norm because of the high fees. You can't just move coins from one of your wallet addresses to another without paying the fees, and the fees are only going to go up.
Some other little known facts about Segwit, are that it is really a hard fork. Segwit nodes do not connect to non-segwit nodes, instead of connecting to the first available nodes they will go through all the nodes tens of times, and if no segwit nodes are available, it will finally relunctantly connect to only one non-segwit node, to make the user experience extremely slow. If you check out line 1829 in pink on this link you can see the current code that does that. The green code that replaces it (which is not actually implemented in v0.15.1 yet) will actually not connect to non-segwit nodes at all, except to ask them for segwit node addresses, but won't download any data from non-segwit nodes: https://github.com/bitcoin/bitcoin/commit/44407100ff9b478d6131a1c38ee993b50b1830df (here one of the REQUIRED_SERVICES is WITNESS which is segwit, and non-segwit nodes don't have this; on line 1831 you can see how after 40 retries, it will finally give up and then fake it that one non-segwit node will have WITNESS, nRequiredServices = REQUIRED_SERVICES;)
Segwit also punishes non-segwit node transaction bytes by multiplying their "weight" by 4 times. And the final nail in the coffin is that Segwit transactions are invisible to non-segwit nodes; it really is an entirely different coin on the same block chain; non-segwit nodes view a segwit transaction as having 0 inputs, so it just ignores them completely because they are not valid according to non-segwit nodes. So the more segwit transactions that take place, the more "segwit" coins are created on the same Bitcoin core block chain; Segwit nodes can see both types of transactions but non-segwit nodes can only see non-segwit transactions. All of this is to hijack Bitcoin and make it unusable as currency, uneasy to use... WHY? Because the powers that be, don't want you using it!
And the Segwit block sizes have been increased to 4MB, so to claim that they didn't want to increase the block size is another lie, the Segwit block being 4MB max; it is actually still a 1MB block with a 3MB extension block, that only segwit nodes can utilize and see.
Right now, I think that only 11% of Bitcoin core nodes have actually implemented Segwit nodes, hence the reason most blocks are still a max of 1MB in size; this keeps the blocks full and the fees to the point where it isn't usable as currency anymore. $5 or $6 is low ball, the fee is now around $20 average. This is $20 to send from an exchange to your address, then if you need to send it somewhere else, another $20. Sure you can send less of a fee, but that means it may never go through, and with over 150,0000 backlogged transactions, if you want it to go through quickly, forget about it.
But to answer your question "could you point out the lines that request KYC?" First off Know Your Customer should just be KYS, know your slave, because it isn't to track "criminal" activity. A criminal is someone who uses force to steal value or to control someone. People trading with each other in any currency are not doing this... the criminals are the ones demanding a percentage of each trade, the criminals are the government gangs. They didn't implement KYS to help anyone, they did it so they can continue to rob everyone blind. And no, there is nothing in the code that tracks bitcoin addresses for the masters, there is no need, as the coins have addresses, they just need to know who owns them. The FBI has actually hired BitFury to help track down people trying to trade freely "97 sources were used including Twitter, etc" https://www.trustnodes.com/2018/01/09/bitfury-de-anonymises-millions-bitcoin-transactions-addresses
RE: Bitcoin Lightning Network LAUNCHED. Programmer explains.