About the room
Official registered business name: Cognit Spindle. The business was established in 2019. It remains one reading room on Mokkoji-ro, teaching Solana staking and validator concepts to adults who come in person.
Hana Seo opened the room in 2019 after leaving a research post in Seoul for the northern hills of Namyangju. Friends still asked her, over meals, to “just look at this validator.” She rented the front room so those conversations could have a table, a pencil, and a closing time. The first shelves held general proof-of-stake pamphlets from several networks.
Through 2020 the questions narrowed. Readers wanted to know why delegated SOL did not earn on the day they signed, why a low commission still felt expensive, and which string on a status page was the vote account. In 2021 Cognit Spindle committed the catalog to Solana: stake accounts, vote accounts, epochs, commission, skip rate, and the timing of warmup and cooldown. Minjae Kwon joined in 2023 to lead the Saturday circle after a year of sitting in as a reader himself. The business has not added a second branch.
Cognit Spindle teaches from public cluster records and printed worksheets. Visitors keep their own keys. The room runs no validator and holds no visitor SOL. Choice of operator stays with the person who will live with the commission.
People
Founder and principal reader
Hana studied economics at a Seoul university and spent the years after graduation reading stake-program behavior with small study groups. She leads Validator Desk appointments and writes most of the field notes. On the worksheet she is strict about separating the identity key from the vote account, a mix-up she still sees every month.
Circle reader, since 2023
Minjae taught adult evening classes in technical subjects before he started staking a modest amount of SOL and got lost in cooldown. He leads the Saturday Circle Workshop and covers the carrel when Hana is at the desk. His commission exercise uses invented validator names so the room never slides into a ranking.
Appointments start from a question the visitor writes down, not from a scripted syllabus. The reader keeps the epoch strip, the two folders, and the commission sheet within reach, and uses only the pages the question needs. If a carrel hour outgrows its question, the librarian says so and offers the desk on another day rather than rushing the stake program into the last ten minutes.