Crossword clues for Proofs of who you are: Abbr.:QEDMath proof abbr.QEDEnd-of-proof abbr.QEDProof abbr.QEDMathematical proof abbr.QEDLatin proof abbr.QEDProof letters (abbr.)QEDGeometric proof conclusion (abbr.)QEDProof-ending abbr.RCPTProof of purchase (abbr.)RCTProof of purchase (abbr.)QEDAbbr. that a proof reader might come across?RECProof of payment: Abbr.RECTSProofs of payment: Abbr.RCTSProofs of purchase: Abbr.QEDLat. abbr. in math proofsQEDAbbr. after a proofLICProof of permission: Abbr.QEDAbbr. in a proofUPCSProofs of purchase, often: Abbr.IDSProof-of-age items: Abbr.QEDAbbr. ending a math proofIDSProofs of who you are: Abbr.TKTProof of purchase, of a sort: Abbr.QEDAbbr. at the end of a proof