| Date | User | Challenge | Score |
| KowalskiVan | Long Story Short | 60 | |
| KowalskiVan | Seventy-Two | 50 | |
| KowalskiVan | Collider | 50 | |
| KowalskiVan | MD0 | 80 | |
| KowalskiVan | Merkle Trees | 25 | |
| KowalskiVan | Jack's Birthday Confusion | 30 | |
| KowalskiVan | The Good, The Pad, The Ugly | 100 | |
| ApexRatio | Infinite Descent | 50 | |
| Abuloha9ayyad | Common Ground | 75 | |
| chunn | Base64 | 10 | |
| Abuloha9ayyad | Noise Cheap | 90 | |
| NOWD | Greatest Common Divisor | 15 | |
| vocie | Manyprime | 40 | |
| Abuloha9ayyad | Ticket Maestro (CryptoHack) | 0 | |
| chunn | Hex | 5 | |
| gokulavasan | Structure of AES | 15 | |
| KowalskiVan | Rhetorical Oracle | 100 | |
| KowalskiVan | Forbidden Fruit | 150 | |
| KowalskiVan | Paper Plane | 120 | |
| phyokhantkyaw010 | XOR Starter | 10 | |
| chunn | ASCII | 5 | |
| vocie | Monoprime | 30 | |
| NOWD | You either know, XOR you don't | 30 | |
| RSMics | Great Snakes | 3 | |
| yocipher | XOR Properties | 15 | |
| chunn | Great Snakes | 3 | |
| chunn | Finding Flags | 2 | |
| Charles_Sloneker | Efficient Exchange | 50 | |
| vocie | Factoring | 15 | |
| Charles_Sloneker | Curves and Logs | 40 | |
| Charles_Sloneker | Scalar Multiplication | 35 | |
| zaire | Passwords as Keys | 50 | |
| Charles_Sloneker | Point Addition | 30 | |
| Charles_Sloneker | Point Negation | 10 | |
| gll | Quadratic Residues | 25 | |
| Krishp14 | ASCII | 5 | |
| lopata | XOR Starter | 10 | |
| Charles_Sloneker | Background Reading | 5 | |
| vocie | RSA Signatures | 25 | |
| Liws | Bytes and Big Integers | 10 | |
| yocipher | XOR Starter | 10 | |
| Shu_Hoshi | Great Snakes | 3 | |
| centeye | Euler's Totient | 20 | |
| lehoangthi | Bytes and Big Integers | 10 | |
| centeye | Public Keys | 15 | |
| centeye | Modular Exponentiation | 10 | |
| gll | Modular Inverting | 25 | |
| vocie | Modular Binomials | 80 | |
| Eyoga | Finding Flags | 2 | |
| zaire | Modes of Operation Starter | 15 |
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