The real story
On the night of 16–17 August 1945, after Japan's surrender, independence leaders met at the house of Japanese Admiral Tadashi Maeda in Jakarta. Soekarno wrote the draft by hand, with Mohammad Hatta and Achmad Soebardjo. The house only had a typewriter with Japanese characters, so Maeda's aide fetched a Latin-alphabet machine from the office of a German naval officer.
Sayuti Melik typed it, adjusting a few words, and Soekarno and Hatta signed. The handwritten draft was tossed aside, and journalist B.M. Diah kept it. At 10 that morning Soekarno read the text at Jalan Pegangsaan Timur 56, and the red-and-white flag sewn by Fatmawati was raised. The typewriter was returned afterwards, and some historians think the one in today's museum is not the original.