The rules
Fees and the weekly surprise
What it costs
| Item | Who pays | Amount |
|---|---|---|
| Weekly pot | Sender | 1% of the envelope |
| Network fee to seal | Sender | about $0.01 |
| Network fee to open | Noshi | about $0.01 |
| Uniswap pool fee | Included in the price | 0.05% to 1% by stock |
The pot
5%your chance this week, out of $1,000 sent in total
The 1% from every envelope is paid in USDG into a separate contract, the pot. It holds nothing else from your envelope and never touches sealed shares.
The draw
After each week closes, anyone can start the draw. The contract commits to a block 20 blocks ahead (about two seconds) and takes that block's hash as the random seed, so nobody knows the winner in advance. The winning ticket's sender receives the week's pot in dollars (USDG), plus any ETH in the pot. Nothing is bought, so whoever starts the draw has no price to set and nothing to influence.
The seed is the hash of a Robinhood Chain block. The chain's sequencer produces those blocks, so in principle it could influence the result; Noshi can't.