Hi, if you're looking to build on top of

VI over the weekend, today I'm going to

show you unis swap before along with

hooks. Basically, some sort of like

scripts that you can add to the life

cycle logic. Meaning that before and

after the swap, you can add your custom

logic. And that way you can build tons

of no novel applications for the space

out there along of course with like some

resources, possibilities and tricks for

you to get ready before ETH global

wenosirus. Um during this hackathon we

have $20,000 in prices and two main

tracks focusing of course in this hooks

that I just mentioned. But before diving

in, please let me introduce you the

UNISA Foundation in Brazil of a more

open and fair financial system. The

UNISAW Foundation supports the growth,

decentralization and sustainability of

the UNISWAP community. Um, we are

focusing on five key pillars, protocol

and innovation, developers, governance,

research and security. And through our

grants, we're supporting our community

for sure. So now we can dive in into the

UNISAP B4 protocol or the version uh

port of the protocol. Um, but first

let's introduce what it's unisop as a

whole. At some point, if you've been

here for a while, maybe you interacted

with unis swap interface built by unis

swap plus. It allows you to trade or

swap tokens, meaning e forc

for die, you name it. There's plenty of

possibilities, but as a core, unis swap

is a set of smart contracts that allows

you to um exchange cryptocurrencies or

ERC20 tokens. basically allows you to

build this liquidity pool concept, a set

of smart contract that from one side

connects liquidity providers and on the

other the traders. So that way anyone

out there can swap tokens in a

decentralized way. Uh as I mentioned um

we have uh four versions of the protocol

at the moment but the first version of

the protocol it was launched back in

2018. Um and then back in 2020 the B2 uh

was launched with like the possibility

for you to trade any ERC20 uh to ERC20

token and like a fee tier fixed from uh

zero uh.3% and like a price curve with a

constant product curve meaning like all

of the liquidity was spread out around

the curve and that way the liquidity

wasn't that efficiency as it could. then

in V3 version back in 2021.

This inherit all of the V4 uh V2 and V1

versions allows you to um trade ERC22

tokens. But now you have this price

curve um concentrated liquidity. Now all

of the liquidity as you as a liquidity

provider, you can set the range where

you're going to allocate it. And of

course that allows you to have more

liquidity efficiency, price execution

and you name it along with like more fee

tiers not just uh 0.0% but now you have

other um options. But earlier this year,

we introduced uh Uniswap B4, a

decentralized automated market maker

with this concentrated liquidity uh

feature, but also these five new ones

such as the single door architecture

that it's basically one contract meaning

all of the pools, all the tokens, all

the transactions happens in one

contract. And of course this is super

positive for gas efficiency matters

along with like some continuous VX

spectrum or dynamic speeds meaning no

more fixed uh fears rather you choose

the rules and you play and you

understand how to how do you want to

interact with your users or your LPS you

name it. um also ERC6 uh 909 or flash

account and that it's basically these

features that allows you to have a more

trading uh real trading experience in a

decentralized way from internal token uh

currency transfers uh to arbitrary and

operations with many minimal token uh

transfers of course super positive for

gas efficiency um and then hoops what I

mentioned at the beginning of this talk

which is basically this arbitrary logic

attached to the life cycle operations

meaning before and after the swap you

can decide the rules. Um but let's uh

dive in a little bit into like what I

just uh mentioned in practice. Um back

in the day in B3 if you wanted to swap

let's say ETH for D you had to go first

in the life cycle operation from ETH to

USDC then USC to die or on the other

hand ETH uh to USDT or USCT to die now

and before everything happens along in

one contract one transaction. So that's

super positive for the ecosystem. And of

course here you can see it in practice.

Um but now if you go back to hooks uh as

I mentioned these are just external

contracts that modify the pool behavior.

Meaning um that before and after the

swap as you can see in this swap hook

flow um the system is going to check the

before swap black and then if you add

any some sort of like custom logic that

I'm going to mention about these

functions available it's going to return

that and then execute it. But then after

the swap, it's going to check this uh

flag. Check after a swap flag. And if

you add any some sort of like custom

logic, it's going to return it. If not,

just going to end the swap. As I

mentioned, these are like 14 hook

functions. Um, and I'm just going to

show you some of them here. Before,

initialize, after initialize, add

liquidity, remove liquidity, swap, um,

donate, and you name it. Uh, you just

got to turn it on and off. Important

note in here just uh only one uh hook

can be add per pool but then one hook

serve many pools meaning that it's

composable if at some point you create

something super valuable the ecosystem

anyone out there can also use it and

leverage it of course doing always uh

your own research and check uh the

security purposes. Um, so I I showed to

you like uh this um template. It's

basically all of the functions that we

have and you can turn on and off. This

is basically part of our V4 template. We

developed this for you to create your

first uh hook with all of the steps and

instructions for you to build it. But we

also have in this space the open

Zeppelin uh host library, meaning they

have these base hosts that you can

leverage. And now jumping into uh the

prices. I'm going to show you these

resources in like a little bit. Um for

this uh hackathon we're focusing in like

two main um prices or tracks. One is

like the unisoft B4 stable asset hooks

$10,000 in prices. Important to clarify

you can either to create your cost hook

or you can also leverage the OZ library.

We are looking for logic and the best

way to implement it. Um so yeah projects

here uh here should explore novel

applications of hooks for synthetic

lending creditbacked trading or

optimized uh stable AMM logic no

interface required but of course we are

going to audit the code and then on the

other hand as per the second track we

have unis swap v4 vol hooks $10,000 in

prices and here projects should explore

innovative hood logic that can help

liquidity resilience mitigate loss

versus rebalancing or LVR or improve

capital efficiency for these uh volatile

pairs. Again, not interface required,

but we're going to audit the code. So,

now that you understand from a broader

perspective what is like unisoft as a

protocol, some of the features that we

have in the UNISOP V4 protocol along

with this hooks concept and how to use

them uh these tools that we have uh for

um you know like hack over these uh two

tracks. I'm going to show you two like

some resources for you to get ready. Um,

so the first one and the most important

in my opinion is this UF hacker toolkit

that is going to include all of the

resources that I'm just going to mention

this presentation and even uh more tools

and tricks for you to hack. Um, you can

score uh scan this QR code and all of

these QR codes are the same. So it's

going to take you out to the hacker

toolkit where you're also going to find

this unis swap docs for sure. Um but

also uh like to recommend you like this

how to build a custom hook video from

the open sabling team. It's like super

short. You can check it before the

hackathon or doing it. Um and yeah, that

way you can like get ready and prep. Um

if you have more time before after the

hackathon you can also check um unisop

course by separ. Um but some of my mo uh

most stronger uh recommendation is like

for you to check the unis swap hook

incubator hook directory which basically

unisap hook incubator is our uh

incubator for uh developers to

understand how to uh create hooks from

uh the whole perspective and then cheat

them. Um so there's plenty of

possibilities, plenty of ideas, plenty

of projects that maybe you can get some

um inspiration and of course after the

hackathon you might be able to join uh

the incubator and yeah as I mentioned

before the UNISB for template that is

basically um like a template that you

can use not just to create your first

custom hook but it is going to allow you

to run your own scripts and tests so

that way make sure that your project is

working uh properly along with the Oz

hooks library that I also mentioned um

previous which is basically a set of

like base hooks that you can leverage

again we're looking for the best logic

implementation around stable and

volatile per uh pairs so yeah um we're

also having this unis swap workshop uh

on Friday 5:30m local time and the

workshop room 4 where we are going to

dive in and guide you throughout this B4

template how to use it or even how to

explore and interact with this OC um

hooks library along with of course

answering all of the questions you might

have. My name is Angela Kandle. I am the

developer community manager here in the

UNISA Foundation and you can find me

either in Telegram or X as at Okando

Crypto. But yeah, TLDDR my goal is to

support you and help you throughout uh

this builder journey and process. So

we'll be available 247 in our Hooyo

Telegram group. You can scan this QR

code and of course IRL with our whole

team in the UNISA foundation booth

during it global wosar. So yeah, stoked

to have you and see you soon. Bye bye.

Thank you.