Amos Yee, 16, has appeared shackled in the Singapore State Courts after his arrest in March for comments he made on social media about Lee Kuan Yew - the founding father of modern Singapore - and Christians soon after Lee's death at the age of 91.
Yee's case has reignited concerns about censorship and social controls in the Asian financial hub and has drawn criticism from human rights activists.
The packed court included his parents, a youth counselor who has offered to post bail for him, and Roy Ngerng - another Singapore blogger who is involved in a separate defamation case with Lee's son and current Prime Minister Lee Hsien Loong.
Yee could face up to three years in jail on the charge of wounding the religious or racial feelings of another person. He has been held on remand since bail was set last week at S$30,000 ($22,610).
He has also been charged under the recently enacted Protection from Harassment Act over a much-viewed Youtube video in which he celebrated the death of Lee, who died in March and was cremated after a state funeral.
However, the prosecution chose not to proceed with the latter charge until after the first two had been dealt with. It can either decide to proceed later or drop the charge entirely, lawyers said.
"If they [go ahead], we will cross that bridge when we get there," Alfred Dodwell, one of Yee's lawyers, said of the harassment charge, which carries a fine of up to S$5,000 ($3,770).