| 2024-01-10 22:12:13 | exocet | Added credit for Sigmatic on Women: Code, Graphics |
| 2023-01-14 20:10:25 | Brittle | Set location to Heeten, Gemeente Raalte, Overijssel, Netherlands |
| 2023-01-14 20:09:59 | Brittle | Added link https://www.pouet.net/groups.php?which=11513 |
| 2023-01-13 17:33:14 | phoenix | Edited nick 'Sigmatic': changed aliases to 'Sigma' |
| 2023-01-13 17:31:49 | phoenix | Added nick 'Sigmatic Software' |
| 2022-11-24 06:39:14 | psenough | Added credit for Sigmatic on HeadrusH: Code |
| 2019-05-31 17:53:12 | ltk_tscc | Set real name |
| 2019-05-31 14:24:15 | sjoerd_visscher | Edited nick 'Sjoerd Visscher': changed aliases to '' |
| 2019-05-31 14:24:05 | sjoerd_visscher | Added nick 'Sigmatic' |
| 2019-05-31 14:23:33 | sjoerd_visscher | Edited nick 'Sjoerd Visscher': changed name to 'Sjoerd Visscher'; changed aliases to 'Sigmatic' |
| 2019-05-23 14:03:39 | exocet | Set real name |
| 2019-05-23 13:59:26 | exocet | Added credit for Sigmatic on Extended (X10ded): Code, Music |
| 2018-10-02 13:58:45 | exocet | Set location to Netherlands |
| 2016-07-16 10:20:08 | Asle | Added link http://amp.dascene.net/detail.php?view=13464 |
| 2016-07-16 10:19:41 | Asle | Updated Sigmatic's membership of Jello: changed group to Jello |