Launch window

A token goes live. In the same block, before anyone has seen the link, a bot buys a tenth of the supply. That is how most launches look today. The launch window is there to stop the cheap version of it.

The rule

For the first two Robinhood Chain blocks of a token's life, the block it is created in and the next one, no wallet can buy more than 1% of the supply: 10,000,000 tokens. At the opening price, that is about 0.026 ETH.

The limit is cumulative. Two buys of 6,000,000 tokens in the window don't pass: the second one would take the wallet to 12,000,000, so it reverts and nothing is bought.

Robinhood Chain produces a block roughly every 0.1 seconds, so the window lasts about 0.2 seconds. Blocks are counted on Robinhood Chain itself.

Length

Creation block + the next one (≈ 0.2 s)

Limit per wallet

1% of supply, 10,000,000 tokens, cumulative

Who can buy

Regular wallets only; contracts cannot

Creator's own buy

Counts against the creator's 1%

Selling

Not limited

Only wallets, not contracts

During the window, only regular wallets, externally owned accounts, can buy. A contract cannot. That means one transaction can't spread a buy across fifty helper contracts that each take 1%.

Smart-contract wallets count as contracts here. If you use one, you can buy as soon as the window has passed, a fraction of a second after launch. From then on, contracts buy like anyone else.

The creator is no exception

A creator can buy their own token in the launch transaction. That buy happens on the curve, at the curve's price, with the same 1% fee, and it counts against the creator's 1%, like everyone else's.

What it doesn't stop

There are no taxes, blocklists or other rules on top of this one. The window is the same two blocks for every token.