Mon
28
Schedule
Posts
JINTAE CHOI
I turn public data into useful intelligence.
CALENDAR
October 2026
Tue
29
Schedule
Posts
Wed
30
Schedule
Posts
Thu
1
Schedule
Posts
Fri
2
Schedule
Posts
Sat
3
Schedule
Posts
Sun
4
Schedule
Posts
Mon
5
Schedule
Posts
Tue
6
Schedule
Posts
Wed
7
Schedule
Posts
Thu
8
Schedule
Posts
Fri
9
Schedule
Posts
Sat
10
Schedule
Posts
Sun
11
Schedule
Posts
Mon
12
Schedule
Posts
Tue
13
Schedule
Posts
Wed
14
Schedule
Posts
Thu
15
Schedule
Posts
Fri
16
Schedule
Posts
Sat
17
Schedule
Posts
Sun
18
Schedule
Posts
Mon
19
Schedule
Posts
Tue
20
Schedule
Posts
Wed
21
Schedule
Posts
Thu
22
Schedule
Posts
Fri
23
Schedule
Posts
Sat
24
Schedule
Posts
Sun
25
Schedule
Posts
Mon
26
Schedule
Posts
Tue
27
Schedule
Posts
Wed
28
Schedule
Posts
Thu
29
Schedule
Posts
Fri
30
Schedule
Posts
Sat
31
Schedule
Posts
Sun
1
Schedule
Posts
SELECTED DAY
Private post titles remain visible in the calendar, but their content requires administrator access. Private schedule entries are hidden.
WRITING
Recent Posts
Essay · 2026.09.25 · 10:36
From Systems to Products: What We Keep, What We Change, and Where This Is Going
A concrete roadmap for what remains unchanged in Blackdeck and ByteCosmos, what changes now, what comes later, and what the mature products should become.
Essay · 2026.09.24 · 19:49
Do Blackdeck and ByteCosmos Have Real User Value Yet?
A cold assessment of whether Blackdeck and ByteCosmos currently give ordinary users enough reason to visit, return, and discover them through search.
Task · 2026.09.24 · 13:16
Mobile Navigation Cleanup and Content Lifecycle Controls
Fixed mobile navigation overflow in ByteCosmos and jintaechoi.com, and added safe administrator deletion for posts and schedule entries.
Task · 2026.09.24 · 12:45
Platform Localization and a Real ByteCosmos Research Sandbox
Multilingual public sites, ByteCosmos administrator controls, and an isolated SQL research workflow for data preparation, signal rules, post-entry analysis, and validation.
Task · 2026.09.24 · 00:46
Blackdeck and ByteCosmos Become Real Intelligence Dashboards
Blackdeck now has a 60-day global-risk baseline and live risk map, while ByteCosmos has a real-time crypto dashboard and a completed 200-day Upbit baseline.