For anyone submitting a Dash proposal

Check it before the burn.

Paste the gobject prepare command. See every field,
and the superblocks it can be paid in.

The command, decoded.

It runs in your browser. Nothing you paste is sent anywhere.

Your gobject prepare command (add the submit command on a second line to check both)

Compare with what you meant (optional)

Name

URL

Amount per payment

Payments

First superblock

Or load an example: one made around its superblock, and one made around the day it was created.

The decoded proposal

How the window works

A superblock pays a proposal only inside its window. Every proposal carries a start_epoch and an end_epoch. When masternodes build a superblock, they skip any proposal whose window doesn't hold that superblock's time, give or take two hours (Dash Core, src/governance/signing.cpp).
proposal.dash.org builds the window around the superblock you choose, half a cycle either side, so one payment covers that superblock and nothing else. Run its two commands in your own wallet's console: prepare, wait for six confirmations, then submit.
The Dash Core wallet's Create Proposal builds it around the moment you click, about two weeks either side for one payment (src/qt/proposalcreate.cpp). For a superblock more than two weeks away, make the proposal on proposal.dash.org, or check the window here first.
Amount, payments and window are fixed once the fee is burned. A mistake means a new proposal and a new 1 DASH fee, so this page checks the command before you run it. Bring questions to Office Hours, or ask Dasha.