What was the first ever entry written for the SCP Foundation collaborative writing project?

SCP-173 is widely considered to be the first ever entry written for the SCP Foundation collaborative writing project. Written by the user "KOPEK" on the /x/ board of 4chan, SCP-173 introduced the concept of the SCP Foundation and established the format and tone for future entries. This entry featured a unique and intriguing concept, describing a containment chamber containing a statue-like creature that physically reacts when not observed. With its innovative narrative style and ability to capture readers' attention, SCP-173 set the foundation for the vast and diverse universe that the SCP project has become today.