In February, Bolt confirmed he would retire after the 2017 World Championships in London and will not compete at Tokyo 2020, at which point he will be nearly 34.
His haul of nine gold medals is the joint highest among Olympic athletics, equal with USA sprinter and long jumper Carl Lewis and Finnish long-distance runner Paavo Nurmi.
"I'm going to stay up late and have fun. I never knew this would happen when I started out," Bolt told BBC Sport.
"My team came through for me tonight. As long as we got the baton round, it was never in doubt.
"It's a brilliant feeling. I've pushed myself, it's been a long road. I'm happy but I'm relieved. It's great to be in the history books as one of the greatest. I'm proud of myself."
Blake made an attempt to persuade 100m and 200m world-record holder Bolt to continue for another four years, saying: "Usain needs to be immortal and he is immortal. I will encourage him to come back for 2020."
When asked about bowing out of the Olympics, Bolt added: "I'm going to miss the crowds. I'm not going to miss the interviews. I've done, like, 500."