| Date | User | Challenge | Score |
| Spire | Signing Server | 60 | |
| Kate80272 | Favourite byte | 20 | |
| Kate80272 | You either know, XOR you don't | 30 | |
| Bohdann | Adrien's Signs | 80 | |
| cattablock | Modular Arithmetic 2 | 20 | |
| Kate80272 | XOR Properties | 15 | |
| Kate80272 | XOR Starter | 10 | |
| Kate80272 | Bytes and Big Integers | 10 | |
| cattablock | Modular Arithmetic 1 | 20 | |
| Kate80272 | Base64 | 10 | |
| AaqibMir | You either know, XOR you don't | 30 | |
| Bohdann | Chinese Remainder Theorem | 40 | |
| Bohdann | Modular Square Root | 35 | |
| Kate80272 | Hex | 5 | |
| Bohdann | Legendre Symbol | 35 | |
| Kate80272 | ASCII | 5 | |
| chinmoy_paul | Montgomery's Ladder | 40 | |
| Bohdann | Quadratic Residues | 25 | |
| Bohdann | Modular Inverting | 25 | |
| Bohdann | Modular Arithmetic 2 | 20 | |
| Bohdann | Modular Arithmetic 1 | 20 | |
| EvelinaFirsova | Bytes and Big Integers | 10 | |
| Bohdann | Extended GCD | 20 | |
| cattablock | Extended GCD | 20 | |
| Bohdann | Greatest Common Divisor | 15 | |
| AaqibMir | Favourite byte | 20 | |
| AaqibMir | XOR Properties | 15 | |
| notharsh67 | Finding Flags | 2 | |
| Agnumen | Modular Square Root | 35 | |
| cattablock | Greatest Common Divisor | 15 | |
| twistedwheel | Legendre Symbol | 35 | |
| mariakorotkova | Modular Binomials | 80 | |
| mariakorotkova | Adrien's Signs | 80 | |
| cattablock | You either know, XOR you don't | 30 | |
| EvelinaFirsova | ASCII | 5 | |
| Kabuto_Wiz | Base64 | 10 | |
| cattablock | Favourite byte | 20 | |
| Spire | Null or Never | 100 | |
| Spire | Marin's Secrets | 50 | |
| spartan8806 | Trust Games | 150 | |
| feodorics_nose | Finding Flags | 2 | |
| Spire | Infinite Descent | 50 | |
| mariakorotkova | Network Attacks | 5 | |
| cattablock | XOR Properties | 15 | |
| jyppi | Jack's Birthday Hash | 20 | |
| quangntenemy | Hamiltonicity 2 | 175 | |
| quangntenemy | Hamiltonicity 2 (CryptoHack) | 0 | |
| Agnumen | Legendre Symbol | 35 | |
| cattablock | XOR Starter | 10 | |
| cattablock | Bytes and Big Integers | 10 |
You are now level Current level