No, the Bill of Rights is not in the Declaration of independence. It is a series of amendments to the US Constitution.
Of the 56 signers of the Declaration of Independence, nearly half of them were lawyers. Some of the lawyers that signed the Declaration of Independence were John Adams, Samuel Chase, Abraham Clark, Thomas Heyward, Thomas Jefferson and Thomas McKean.
It was signed on August 2, 1776.
435 in the House
100 in the Senate
Thomas Jefferson wrote the entire first written draft on his own. Then Ben Franklin and John Adams made some changes. Then it was proposed to the Constitutional Convention for adoption, where it was changed in a number of places by the delegates until it was acceptable to the states.