Daiko Dokusho is a reading notebook where notes meet on the same page. A page number in a book, an elapsed time in a video, a slide number in a deck. Anyone who opens the same spot finds what you wrote.
A note without a position rarely reaches anyone. These are the situations Daiko Dokusho was built for.
Each of these is solved by writing directly onto that one page, that one moment.
An identifier that pins down the work, and a position inside it. When both match, notes written far apart end up in the same place.
Books are identified by ISBN and annotated page by page. Every edition is treated separately, so "page 128 of the third edition" never drifts. Kindle locations, percentage and whole-book notes are supported too.
YouTube, Niconico and Vimeo. "The steps at 12:34 no longer work on the current version" can be left at exactly that timestamp.
Speaker Deck and Docswell. Write the remark that belongs inside the deck — "slide 17 is where the real subject starts".
Point at a post on X, Bluesky or Mastodon and comment on it. The post itself is never reproduced — you open it on the original service. Different URLs for the same post gather in the same place.
Eleven countries, starting with Japan's Diet: the Netherlands, Norway, France, Sweden, Canada, Germany, Spain, the EU, the UK and the US. Annotate "the 9th speech in no. 16 of the Committee on Foreign Affairs and Defence". Speech numbers never drift between editions.
Corrections and added context cost the writer effort and are worth a great deal to the reader. Tipping sends value back to them: the full amount you tip goes toward the creator's payout — the service fee is charged once, when you buy points, never on the tip.
If a position can be pointed at, it can be annotated.
Technical books, textbooks, workbooks and novels. Kindle locations, percentage and whole-book notes are supported. Titles can be searched through the National Diet Library.
YouTube, Niconico and Vimeo. Give a time as 12:34, 1:02:05 or in seconds. Videos are never embedded — they open on their original service.
Speaker Deck and Docswell. One comment thread per slide, and every link to the same deck gathers in the same place.
Reading, watching, studying, talking. If a position can be pointed at, it can be annotated.
"This sample no longer runs on the current version" on page 212. "The real subject starts here" at 23:40 of a talk. Knowledge only a reader has stays attached to where it belongs.
Every edition is treated separately, so "page 128 of the third edition" always points at the same place. You can teach each other without page numbers drifting apart.
Each member leaves notes chapter by chapter, so anyone who missed a session can catch up later. Easier to find than minutes, and tied to the book forever.
The scene you love by its timestamp, the line you love by its page number. It reaches exactly the people who know what "that moment" means.
Put the missing context on slide 17. Put an explanation on the page where students always stumble. The same explanation no longer has to be repeated every year.
You stay anonymous and are judged on the quality of what you wrote. Notes that move people receive tips from readers.
What one reader writes becomes a signpost for the next.
Notes are not a dead end. They are how the next reader arrives.
Free to use. An email address is all you need — no password, just a magic link.
Register a book by ISBN or title, a video or deck by its URL.
Go to a page of that book, or a moment of that video.
Leave your note. Private at first; make it unlisted or public later.
Tips are sent with points bought in advance (1 point = ¥1, valid for 180 days from purchase). Tips range from 100 to 10,000 points each, up to 20,000 points per calendar month. A single service fee of 10% (plus tax) is charged when points are bought — for example, 1,000 points costs ¥1,110 in total. No fee is charged on the tip itself. We close the books on the last day of each month and pay creators from our own funds on the 15th of the next month (next business day if it falls on a weekend or holiday) — money never passes directly between users. Balances under ¥3,000 at closing carry over, a ¥450 transfer fee is deducted per payout, and a balance carried over for 180 days is converted into the same amount of points. See the commercial transactions notice inside the service for details.
大劫システムズ合同会社 — daiko-systems.com
| Name | Daiko Systems LLC (大劫システムズ合同会社) |
|---|---|
| Domain | daiko-systems.com |
| Services | Daiko Dokusho (note sharing) · Daiko Vault (personal data storage) · IT consulting and AI enablement |
| Registered in | Japan |
| Languages | Japanese, English, Spanish |