What Layup is
A place to create a coin and open its market in one go, where the money behind it can never be taken out.
Layup is a launchpad. You give it a name, a ticker and 0.002 ETH, and it creates your coin and the market people trade it on, in a single transaction. No coding, no listing application, no waiting. A minute later your coin has a page, a price and anyone in the world can buy it.
The market it opens is a pool: a shared pot holding your coin on one side and ETH (or UP) on the other. People buy by putting ETH in and taking coins out, which is what makes the price move. The pot is the reason the coin is worth anything at all.
The usual way this goes wrong is that whoever launched the coin walks off with that pot, leaving holders with something they cannot sell. It is common enough that it has a name: a rug pull. Layup makes it impossible rather than promising it will not happen. Ownership of the pool is handed to a contract that has no button for giving it back — no timer, no admin, no exception. The liquidity is parked there for good.
The rest of this page is short: how a launch works, what the 1% trading fee is, and what we do with our half of it.
Launching a coin
0.002 ETH, three choices, and the chain does the rest before you finish reading this.
A launch costs a flat 0.002 ETH and asks you for three things:
- What it trades against. ETH or UP. This is the money people spend to buy your coin, and what its price is quoted in. Picked once, at launch.
- A name and ticker. Each pairing can only be used once here.
- How much you keep. Anywhere from nothing to 10% of the supply, sent to your wallet in the same transaction. The other 90% or more goes into the pool, where it stays.
ether, paired through canonical WETH. Buyers spend ordinary ETH.
up.'s own token, the asset behind Robinhood Chain's liquidity engine.
You do not choose the starting price and you do not put up any money of your own. One billion coins are created, and they are priced so the whole supply is worth about $4,000 on day one. The first ETH in the market comes from the first buyer, not from you.
- 10.002 ETHyou sign once
one transaction carries the fee and your three choices: what it trades against, the name, how much you keep
- 21,000,000,000the supply exists
all one billion coins are created in that moment, and no way to make more survives it
- 30 to 10%your keep leaves first
whatever share you chose lands in your wallet before the market opens
- 4$4,000the pool opens
the rest of the supply goes in, priced so the whole billion is worth the standard opening cap
- 5foreverthe pairing is locked
ownership of the pool goes into a contract with no way to hand it back
if any step failsthe whole launch cancels itself, fee included. There is no half-launched state.
The 1% trading fee
Every trade pays 1%. Half of it goes to whoever launched the coin, for as long as it trades.
Every buy and every sell pays a 1% fee. That is not something Layup bolts on: it is the standard fee of the pool itself, charged by the market the same way for everyone. It is split down the middle.
Charged by the pool on every trade, in both directions, and split the same way every time. Nobody can change the ratio and nobody can point it somewhere else.
Half goes to the creator. If you launched the coin, you earn from every trade in it, forever, with nothing to renew and nobody who can cut you off. The earnings pile up inside the pool until someone presses collect on the coin’s page — anyone can, and the money still only goes to the two places below.
Half goes to Layup. That is the next chapter.
Where our share goes: $LAYUP
Both of the things Layup earns are spent on one thing: buying back $LAYUP on the open market.
Layup earns money in exactly two ways. The 0.002 ETH paid to launch a coin, and half of the 1% trading fee on every coin launched here. There is no third way, no hidden cut of the supply, and no fee that can be turned on later.
All of it goes to the same place: buying $LAYUP, the launchpad’s own token, on the open market like anybody else — same pool, same 1% fee, same price everyone is getting at that moment.
the flat fee paid once, when a coin is created
our half of the 1% the pool charges on each trade, forever
Every fee the launchpad takes is spent buying back its own token, on the same pools everyone else trades on.
The point is to tie one thing to the other. The busier this launchpad gets, the more coins get launched and the more they trade, and the more of that revenue turns into buying pressure on $LAYUP. Holding $LAYUP is a way of holding the launchpad’s activity rather than any single coin launched on it.
Two things worth being plain about. Buybacks happen from fees actually collected, so they follow real trading volume — a quiet week is a small week. And they are a spending policy, not a promise written into the contracts: what the contracts do enforce is the part that protects holders, namely that the fee split cannot be changed and the liquidity cannot be pulled.
$LAYUP has not launched yet. Until it does, launch fees and the launchpad’s half of trading fees are simply accumulating; the moment the token is live, its address appears on the front page and in Appendix A.
Questions people ask
The short answers, without the contract talk.
No. Ownership of the pool sits in a contract with no way to hand it back — not after a delay, not by us, not by the creator. The function does not exist, so there is nothing to trust and nothing to watch.
They can sell whatever they kept at launch, which is capped at 10% of the supply and shown on every coin's page. The other 90% or more is in the pool and can only be bought, never withdrawn.
Only the 0.002 ETH fee and a little gas. You supply no liquidity of your own — the coins go into the pool and the first buyer brings the first ETH.
Your half of the trading fees builds up inside the pool. Pressing collect on your coin's page pays it out in one go, and anyone can press it — the money only ever goes to you and to the launchpad.
No. The 1% fee and the 50/50 split were fixed when the contracts were deployed, and the contracts have no owner and no upgrade path. Changing anything would mean deploying a different launchpad, which would not touch a single existing coin.
Everything the launchpad earns is spent buying it. It is the one thing that gets more valuable as the whole launchpad gets busier, instead of riding on a single coin.
Robinhood Chain, on up.'s liquidity engine. Every contract involved is listed in Appendix A and readable on the block explorer.
Numbers and addresses
The whole thing on one plate, for readers who want to check it themselves.
- cost to launch
- 0.002 ETH, exact
- coin supply
- 1,000,000,000, minted once
- trades against
- ETH (as WETH) or UP
- opening market cap
- $4,000, every launch
- creator keep
- 0 to 10% of supply
- trading fee
- 1% on every trade
- fee split
- 50 creator / 50 launchpad
- launchpad revenue
- 100% into $LAYUP buybacks
- liquidity lock
- permanent, no unlock exists
- chain
- Robinhood Chain (id 4663)
Layup writes as little of its own code as it can. None of its contracts has an owner or an upgrade path. It is built on this launch and liquidity infrastructure:
| Contract | Address |
|---|---|
| LiquidityLauncher v3.2.0 | 0x0000FffFBE8efE702c8703aE3477FF5dE3d319C0 |
| UERC20Factory | 0x000000e200088D55C39a11F609E5F667729ad49b |
| up. v3 pool factory | 0x1ac9dB4a2608ba45D6127B1737949b51Bb54B7F3 |
| up. v3 position manager | 0x07F44c47743A2f36414A82b9F558ECFCf0EEdCEf |
| up. v3 swap router | 0xC062b870E813fcA720f1e002c234369Ab3aB9415 |
$LAYUP, the token every fee buys: not launched yet; the address lands here and on the front page the moment it is.
Chain endpoints: RPC rpc.mainnet.chain.robinhood.com · explorer robinhoodchain.blockscout.com. If you read Solidity, the contracts in contracts/src/ are short and are the final word on everything above.