From September 28, 2021, onward for the next 1 187 days, openproofs.org was checked for availability 1 times. Tests reveal 1 uptimes of openproofs.org, on September 28, 2021, the latest check got a code 200 in response, proving it was accessible. As of December 29, 2024, all evaluations showed openproofs.org had no periods of inoperability. The confirmation that no responses have error statuses is provided by replies received as of December 29, 2024. On September 28, 2021, openproofs.org replied in 0.149 seconds, against its 0.149 seconds average response time.