score:8
The physical circumcision alone would not have been sufficient for the Jews. The Bris ceremony would have had to have been observed, so there would have been a Mohel to testify.
The same traditions are still carried out in Judaism today. Supporting references:
http://www.myjewishlearning.com/life/Life_Events/Conversion/Conversion_Process/Circumcision.shtml
Item #1 covers the basics:
1.Mohel: Who Is A Qualified Mohel?
A mohel is an expert in the surgical aspects of circumcision as well as knowledgeable in the laws and customs pertaining to a traditional circumcision and ceremony. A mohel is a person who is certified to be capable and knowledgeable in both the surgical aspects of performing circumcision as well as the traditional aspects of performing a kosher circumcision and the traditional ceremony.
Item #10 covers an adult circumcision with a link:
10. Mohel: Can A Mohel Do Adult Circumcision?
There are experienced mohels who do perform adult circumcision. Aside from performing traditional circumcision on newborn children, Rabbi Mozes can also be a mohel for older children and adults. For more information on an adult Bris by Rabbi Mozes, please click here.
Upvote:2
The answers are very vague. If a person was suspected to not be of circumcision, they were arrested . In Acts 21:26-36 shows the chaos that came when someone thought Paul took Trophimus the Ephesian to the temple complex. They did not check at the door, they took them on their word until a complaint was lodged. At that time, they would have been physically checked.