how to spot the obvious
a) no/weird github )
b) stretched roadmap (you can bootstrap everything in a few hours, there is plenty of generators to start the coin with everything built)
c) ICO
d) white paper
e) copyright violation
f) high price
g) guides
a)
learn to read github
https://github.com/bitcoin/bitcoin. the only thing that all successful projects have in common - solid github. some scammers already started to working on that, so even good looking github can make zero sense after some studying and reading/testing. if you would look at the differences in versions/branches of bitcoin
https://github.com/bitcoin/bitcoin/branches - you would notice that it is very easy to spot the project that is based on an old core. reason for that could be an absence of proper documentation/guide how to bootstart current version of the original project and lack of skills.
learning ubuntu to feel comfortable building the core will take couple weekends - but will pay itself in lightspeed. i think this is a must, since we are talking about financial platform. you probably will have to lear it at some point anyway if you want to succeed in cryptocurrency market. documentations usually very rich, but on advanced level. don't forget that you working with experimental software. basic linux skills could give you advantage like being able to solo mine new coins while developers still building binaries)) this could lead to a very high profit if played right.b)
since most of the projects are forks of forks, the software is already finished and all you need is copy paste. so to start the clone - depends on how fast you can type. i haven't seen the roadmap that can not be finished by one pair of hands in 48-60 hours. hardest part - pay 3 btc to get listed on exhcange. might be a week. why would you stretch release of the wallet that is ready on the next year, 6 months after an exchange listing.
c) think about how the price develops around the project. in case of btc - its tech. so the same for every fork. miners spending resources mining and confirming, and etc. so if you have some solid tech - all you need is to release it and get listed on an exchange. market will set the price. but if you not confident in your project, or you know that it has no value - you will use ICO to setup desired price. example of good scam -
https://www.coindesk.com/arisebank-ico-fraud-case-may-ensnare-additional-parties/?utm_content=buffer894d4&utm_medium=social&utm_source=twitter.com&utm_campaign=bufferd) white paper is something that you would want to put in frame. its an idea of your project. academical representation, if you want. but looking at all the current flow of projects - most of them dedicated over 65% of the content to expanded budget program and referral system.
e) this might be tricky. but its a very common flag. im seeing people stating like "oh, yeah maybe looks similar. but its fine.". its not. companies getting sued regardless geographical location (!). and its not okay even if its just a little similar. one of my favorites from 2017 year
https://www.theverge.com/2017/5/22/15678296/paypal-pandora-lawsuit-logo-designf) i guess this is already explained in part c)
g) the reason i got into cryptocurrency was the open source. like to read. but since the tech is still in experimental state - it requires some skills to feel comfortable around the environment. so if you don't know how something works - you study first. but what can be observed right now - armies of masternodes with blind operators who's running everything from root and then questioning disappearance of their funds. but devs don't want you to learn. or you would figure out what they are actually doing.
this is based on data and observations from jan 2016 to dec 2017.
UPD after the dark winter, amount of scam coins sky rocketed, more and more masternodes auctions and ICOs trying to lead investors in the wrong world where blockchain could be valued over $1000 for one masternode,
one week after the start)) since value of the project develops from its security and functionality abilities - there is no possible way for a new coin to prove its characteristics (you looking at months, years of robust testing and hacking).