Hana Seo
Hana leads the signature walkthrough. She started the pencil rule: header counts are copied before anyone describes what the transaction “was for.” She keeps the sample folder of public signatures used when a visitor wants the method first.
About
The registered reading room on Guwolmal-ro
The official registered business name is Think Compass. The business was established in 2018 in Namdong-gu, Incheon, to give one Solana transaction a quiet table and a reader who will stay on a single field until it is clear.
How the room started
In 2018 a handful of people in Namdong-gu were meeting in a café to decipher Solana transaction printouts. The room was loud, the account lists were long, and nobody could hear the difference between a mint and a token account. They rented the street-level room on Guwolmal-ro, put an oak table under the window, and registered the business as Think Compass.
The first shelf was a cardboard box of public mainnet transactions, annotated in pencil. By 2021 the fee guide and the account-key guide were clothbound. In 2024 Sora Kim added a short companion on versioned transactions, because visitors had started bringing v0 signatures whose account lists continued onto a lookup table.
The work stayed the same: one signature, read in order, with the paper going home in the visitor’s bag. Accounts remain in the visitor’s own wallet. Readers explain the message, and signing stays outside the hour.
The people at the table
Minjae Park
Minjae joined from a bookkeeping desk in Incheon, where he had been asked to explain lamport changes in a noisy office. He built the wooden-block map so a token account, its mint, and the fee payer cannot share a name.
Sora Kim
Sora prints the packets, repairs the cloth bindings, and hosts the reading hour. Questions in the last ten minutes stay inside the guide that was on the desk.
How we work with visitors
A booking is a correspondence. You write, the desk answers within two working days, and a time is held after the deposit transfer. We ask for the signature on paper rather than in a chat log, because the printout is the object the hour revolves around.
English is the language of the guides and the sittings. A one-page Korean glossary of the field names — signature, fee payer, lamport, blockhash, writable — is on the table if you want the paired words. The glossary is a sheet of terms, not a second lesson.
We are neighbours to the businesses on Guwolmal-ro. The door is unmarked except for a small compass in the glass. If you are early, the bench in the entry is for waiting; the table is not shared with the previous visitor’s paper.
