cogent evidence, proof - any factual evidence that helps to establish the truth of something; "if you have any proof for what you say, now is the time to produce it"

bed check - a check that everyone is in bed by the time they should be

crosscheck - an instance of confirming something by considering information from several sources

odd-even check, parity check, redundant check - a system of checking for errors in computer functioning

checksum - a digit representing the sum of the digits in an instance of digital data; used to check whether errors have occurred in transmission or storage

affidavit - written declaration made under oath; a written statement sworn to be true before someone legally authorized to administer an oath

jurisprudence, law - the collection of rules imposed by authority; "civilization presupposes respect for the law"; "the great problem for jurisprudence to allow freedom while enforcing order"