The ICO only requires you to do proof of promotion to be part of the awesome mtc ccommunity. Marinecoín is a self sustaining, zero fees, dev-less time dilution technology which has been tested over time and has stood the the tests of time.The block chain supports fast transactions and is dev-less, supported by artificial intelligence. This is an interesting project that will grow strongly and you can double your money, maybe x10. marineco.ín It is a time tested network. Marinecoíns block chain is 500% faster that Bitcoin. It it very secure..MTC. is the ticker for marinecoín. Marinecoín dates back to 2014 but the cryptocurrency world was not ready for it yet and the crypto market overall was stagnant.