Former Guatemalan vice-president Eduardo Stein heads the commission
A commission has begun investigating last year's military-backed overthrow of Honduran President Manuel Zelaya.
It was set up by newly-elected President Porfirio Lobo in an attempt to restore some of the country's international standing.
US President Barack Obama and UN Secretary-General Ban Ki-moon have praised Mr Lobo for the move.
But supporters of Mr Zelaya have said the so-called truth commission is a farce and questioned its independence.
Mr Ban said that truth-telling was a necessary, but not sufficient basis for reconciliation.
Some groups which opposed Mr Zelaya's overthrow have said that the investigation only serves as an excuse for the coup leaders to escape justice.
But commission member Julieta Castellanos said they were determined "to do something independently that reflects the reality of what happened".
The overthrow of Mr Zelaya last June divided opinion in Honduras and internationally.
Mr Zelaya was removed amid a dispute over his plans to hold a vote on whether a constituent assembly should be set up to look at rewriting the constitution.
His critics said the vote, which was ruled illegal by the Supreme Court, aimed to remove the current one-term limit on serving as president and pave the way for his possible re-election.
Mr Zelaya repeatedly said he had no interest in staying in power but wanted to rewrite an outdated constitution to guarantee fairer representation for all Hondurans.