Durée de vie des cryptos – et oui les debutants ne le savent pas mais des cryptos disparaissent regulierement.
« The survival rate of cryptocurrencies is low » (here is the data)
Thu 11 Jan 2018 22:53:11 GMT Author: Eamonn Sheridan 
Author: Eamonn Sheridan
Bitcoin, Ethereum (ETH), Ripple (XRP), Monero (XMR) are the headline grabbers for crypto
(there are others of course, forgive me if i have left out your favourite).
But what about all the lesser known?
Coinmarketcap surveyed the field, using data going back to April 2013. It found:
more than 860 defunct cryptocurrencies, which is around 40% of them
And, that number does not account for the many more cryptocurrencies that failed to launch after their initial coin offering (ICO)
The average lifetime of defunct cryptocurrencies is around 327 days
Average lifespan of surviving cryptocurrencies is around 513 days
How does BTC impact on smaller cyrptos?
In March 2016 bitcoin fell around 25%
This triggered a surge of cryptocurrency extinctions
Is it just tiny cryptos that fail?
Well, no. Some of the failures had achieved quite high valuations. For example:
ROUND had a peak market capitalisation of 193 million USD
DAO coins hit USD $160m