One is absolute origin — the beginning from which everything else descends. In the Pythagorean tradition it is the monad, the indivisible unity that precedes multiplicity.
Present in every civilization as the first symbol drawn by humans — from Sumerian numerals to the Roman tally — One is the oldest and most universal number in history.
The only number that leaves others unchanged when multiplying, and the only one that generates all others by successive addition.
Capsule #0000001 is the first key of the Vault: the cornerstone of Open2099. Whoever holds it enters the project's history as its starting point.