Fair, no-oversell allocation of scarce slots.

First-come ordering, one slot per person, no line-jumping, all enforced by the database rather than by hope.

✓ ranks derived from (claimed_at, id), never stored, never gapped

Every claimant gets a receipt whose position can be re-checked against an immutable public ledger.

✓ 5,000-entry draw re-derived byte-for-byte from the revealed seed