The draw.
A draw is one reward cycle: a window of time, a pot of revenue, and a settlement that pays every holder a base dividend and picks six prize winners at random.
The pot.
The pot is the rewards bucket: 80% of the fees collected since the last draw closed, plus anything carried over. It accrues while the draw is open and is fixed when the draw closes. The site shows the live pot and a ring that fills as the cycle runs.
How the pot is split.
Everyone gets the base dividend. If you hold 1% of the eligible weight, you receive 1% of 60% of the pot every draw, with no luck involved. The remaining 40% is where the draw comes in.
Tickets and randomness.
At the close of the window, every holder is placed on a number line. Your interval on that line is exactly as wide as your time-weighted weight, so a holder with twice the weight has twice the chance of being picked. The ordered line is published as a manifest and its hash is committed before any randomness exists.
Randomness comes from Switchboard On-Demand, a commit-and-reveal oracle on Solana. The commitment is recorded after the manifest is fixed, and the reveal happens afterwards, so neither Mosaic nor a holder can steer the result.
The jackpot is the first point sampled on the line. Each runner-up is sampled from the line with previous winners' intervals removed, so one holder cannot win twice in the same draw and a very large holder cannot exhaust the draw.
What happens at close.
Checkpoint.
Finalized balances over the window are aggregated per holder, linked wallets are merged, and the weighted line is built and hashed.
Commit, then reveal.
Randomness is committed against the fixed manifest and revealed. Winners are locked.
Allocate.
Every holder's obligation is computed: base share, plus jackpot or runner-up prize where a ticket landed. Each obligation is split by that holder's mix.
Buy and deliver.
The pot is swapped into the catalogue assets holders asked for and pushed to wallets. See Getting paid.
If a draw closes with a pot too small to deliver, the cycle still settles so the accounting stays continuous, and the balance rolls into the next pot. The site collapses these behind a count rather than listing them as draws.
Cadence and sizing.
The cycle length and the per-draw budget rule are operating policy, not on-chain constants. The current policy runs cycles of one to three days and commits the full rewards intake for the cycle. A smoothing rule or a daily cap may be introduced so pots are predictable when fees spike; any such change is published here before it applies.