$FOLDBOOK not live yet gmgn
Foldbook book 1 bell rings at entry 2

The smallest entry folds.

The book is open and empty. The first entry sits on step 1, and the smallest entry in the book is the one that folds when the bell rings.

Up to ten ETH entries sit in the book, one per wallet. Each round the smallest folds and its ETH splits evenly to every entry still in. The last one left takes its own back plus every split it caught. How a book runs

    your entry

    Enter 0.005 and you sit on step 1 as the first entry in the book.

    no entry of yours in this book

    the tape0 lines
      closed books0

        How a book runs

        1. Enter. Put in 0.005 ETH or more while the book has an open line and nothing has folded yet. One entry per wallet, for holders of 10,000 $FOLDBOOK.
        2. The bell. The round clock starts when the second entry comes in. When it runs out, the smallest entry folds. On a tie, the later entry folds.
        3. The split. The folded ETH splits evenly to every entry still in the book. No cut.
        4. Top up. Add ETH to your entry any time before the bell to climb off the bottom.
        5. Last one in. When one entry is left the book closes: it takes its own ETH back plus every split it caught, and a new book opens.
        worked book

        Nine entries, the smallest 0.005 ETH. Round 1: it folds, 0.005 / 8 = 0.000625 to each of the eight left. Round 2: the next smallest, 0.008, folds, 0.008 / 7 = 0.00114 to each of seven. Eight rounds in, one entry stands and takes its own back plus all eight splits it caught.

        Anyone can ring the bell once the clock has run out; the contract picks the fold, never a person. Credits are pulled with the claim button. An entry alone in a book before any fold can withdraw.