The green tip is the tulip starting to sprout. In the future, don't peel the brown skin coating off the bulbs - it's protection for the bulb in the same sense your own skin is a protective coating.

Paperwhites and tulips are different, don't look for them to develop in the same manner. Leave them alone without poking into the soil to check on root progress.

yeah, i thought they were like dead skins, like when we get sunburn and skin hardens and peels off. so i peeled it off. and i thought it was going to block the tulip from coming out.

oh and, some of my tulips bulb thing that i took out have green soft patches on the side and when i touched it, it came out leaving a black wet spon on the side of the bulb. do you think its dead? or should i wait like 4-5 days to see if green thing grows and if it doesnt throw it away

Tulips are a bit different in their growing habits from paperwhites. Be a bit more patient and you will see results. They take a longer time to come up as they prefer cooler temps. Paperwhites do not like cold; and so are more conducive to warmer house temps and come up faster. If the tulip is sprouting green and white shoots, it is growing.

umm right now its pretty cold here, but my tulip is growing fine. i planted like 5 tulip bulb but only 2 is sprouting green shoot. others are just bulbs, and one of em is having a brown thing trying to cover the top

The one with the rotten spot *might* not come up, but the others probably will if you are patient. They are definitely alive and ready to do their thing, but it will be on their own timetable.