From the National Archives:
The House passed a joint resolution containing 17 amendments based on Madison’s proposal. The Senate changed the joint resolution to consist of 12 amendments. A joint House and Senate Conference Committee settled remaining disagreements in September. On October 2, 1789, President Washington sent copies of the 12 amendments adopted by Congress to the states. By December 15, 1791, three-fourths of the states had ratified 10 of these, now known as the “Bill of Rights.”