The idea
Which days mean something to you?
A birthday. An anniversary. Or a day that changed who you are.
Pick one and it exists — not a picture of a date, but four layers the contract draws itself. Yours is settled the moment its last layer opens. Right now 3,607 pieces are still sealed: their dates are unknown even to the wallets holding them.
And a day can die. Selling burns the piece — 32,692 have burned already. Sell the last one carrying a date and that day goes dark on the calendar, waiting for someone to bring it back.
Hold one, though, and it pays. When the calendar reaches your date, its holders claim that day’s gift at uday.gift — every year, on your day.
Keep one for yourself. Send one to someone who matters. 363 of the year’s 366 days are lit so far — the rest are still waiting to be born.