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Uniswap Launches V4: What You Need To Know
Uniswap V4 introduces "hooks" — contracts that run at various points in a pool action's lifecycle. Find out how it works!
June 22, 2023
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Introduction

In the depths of the 2018 bear market, the crypto space witnessed the introduction of the automated market maker (AMM) model. This stands out as one of the most revolutionary breakthroughs in the decentralized finance (DeFi) space, enabling the execution of trades on-chain, without the need for an intermediary. While Bancor was the first to use it in 2017, Uniswap eventually became the dominant AMM, which paved the way for AMMs as a staple in the space.
 
Today, Uniswap remains the number one decentralized exchange (DEX) across chains and in all of DeFi, holding more than $3.85 billion in total value locked (TVL) and processing almost $6 billion in trading volume in a single week. But as market leaders, Uniswap doesn’t just rest on their laurels. Since their initial launch, they have not stopped shipping new features to the platform.
 

Uniswap V1: Launch

Hayden Adams founded Uniswap (V1) as a decentralized exchange protocol for trading ERC-20 tokens on the Ethereum blockchain on November 2, 2018. Uniswap V1 is a set of smart contracts that allows users to swap tokens without the need for an order book or an intermediary. Instead, it uses a constant product market maker algorithm that automatically adjusts the price of tokens based on supply and demand.
 
Uniswap V1 only supported ERC-20 trading pairs on Ethereum. The protocol is completely decentralizedpermissionless, and censorship-resistant, meaning that anyone can swap or list a token without permission. The UNI token was launched on September 16, 2020.
 

Uniswap V2: More Pools, Oracles and Flash Swaps

Uniswap V2 launched in the early days of DeFi Summer of 2020, bringing to the protocol ERC-20 trading pairs, when initially all pairs were paired with WETH. This addition greatly increased the utility for traders on Uniswap. This flexibility is further increased with the introduction of Flash Swaps, which enabled more efficient trade execution and settlement.
 
More than that, Uniswap V2 implemented harder-to-manipulate price feeds on the protocol, which keeps their platform safe from price manipulators looking to exploit the platform.
 

Uniswap V3: Concentrated Liquidity

Just one year later, Uniswap V3 was released, bringing the now well-known concept of concentrated liquidity to the DeFi space.
 
Concentrated liquidity enables significantly greater capital efficiency to the original AMM model through the concentration of liquidity in liquidity pools. Moreover, this also gave liquidity providers the opportunity to earn outsized fees through their provided liquidity, provided they were savvy enough to keep their liquidity within the current trading range.
Uniswap V3 came with a significant downside though. Passive liquidity providers were unable to take advantage of the benefits of Uniswap V3 and those who were inexperienced with it also lost out due to impermanent loss.

Nevertheless, the concentrated liquidity model has still received mainstream adoption and has since been copied or adapted into a variety of models, with most prominent AMMs implementing some form of concentrated liquidity model on their platform.

Uniswap V4: Hooks and Custom Pools

Fast forward another two years, and we now have the announcement of Uniswap V4 on June 12, 2023, the latest in Uniswap developments.
 
Uniswap V4 introduces the concept of “Hooks” to the platform. Hooks are essentially contracts that run at specified points in a pool action’s lifecycle. These points can include, but are not limited to, when a pool is set up, when liquidity is added or removed, and when trades are made in the pool.

These hooks allow increased customizability over deployed pools on Uniswap V4, enabling pool creators to have greater control over the behavior of their pools.

In fact, together with publishing their draft code for Uniswap V4, the Uniswap team has also released a set of sample code for hooks they have written to demonstrate what’s possible with them. These include:

  • time-weighted average market maker (TWAMM) pool
  • Dynamic fees based on volatility or other inputs
  • On-chain limit orders
  • Depositing out-of-range liquidity into lending protocols
  • Customized on-chain oracles, such as geomean oracles
  • Autocompounded liquidity pool fees back into the liquidity pool positions
  • Internalized maximal extractable value (MEV) profits are distributed back to liquidity providers
In addition to hooks, Uniswap V4 is also designed to run out of a singleton contract. This means that all pools will share a single contract, which is opposed to the current architecture of every pool having its own smart contract. This is expected to generate savings of up to 99% for traders as token transfers are minimized in swaps involving more than one pool. Moreover, the singleton contract enables flash accounting, which means that the changes in each pool are recorded as net changes rather than at the end of each swap, further increasing savings for users.
 

License Controversy

Currently, Uniswap V4’s draft code has been open sourced, released under a Business Source License (BUSL). The team has also opened up the code base for contribution from the public.

The decision to release the code under BUSL has drawn flak from many developers who criticized the use of the term “open source” to describe the new Uniswap V4 codebase. While BUSL allows the code to be copied, modified and contributed to, it does not allow the code to be utilized for commercial uses for the next four years. This effectively makes it a proprietary license, and in most developer circles, would not qualify as “open source.”

Uniswap founder and CEO, Hayden Adams, and the team responded by claiming that four years is not a long time and that the protection that the license confers incentivizes innovation. However, other developers claim that the license instead stifles innovation due to fear of a copyright claim for any code that looks remotely similar. Adams has since retracted, stating that “source available is more accurate.”

Additionally, certain members of the DeFi community have also alleged that concepts of Uniswap V4 seemed to exhibit similarities to open source code from other teams. These allegations include the copying of protocols such as Crocswap (now Ambient Finance) and Shell protocol.
 
Furthermore, some DeFi users have even speculated that Uniswap V4’s announcement was accelerated due to Ambient Finance, a decentralized trading protocol, hinting at their imminent launch earlier in the week. Ambient Finance has since launched on the Ethereum mainnet.
 
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The Great Onboarding: US Government Anchors Global Economy into Web3 via Pyth Network

For years, the crypto world speculated that the next major cycle would be driven by institutional adoption, with Wall Street finally legitimizing Bitcoin through vehicles like ETFs. While that prediction has indeed materialized, a recent development signifies a far more profound integration of Web3 into the global economic fabric, moving beyond mere financial products to the very infrastructure of data itself. The U.S. government has taken a monumental step, cementing Web3's role as a foundational layer for modern data distribution. This door, once opened, is poised to remain so indefinitely.

The U.S. Department of Commerce has officially partnered with leading blockchain oracle providers, Pyth Network and Chainlink, to distribute critical official economic data directly on-chain. This initiative marks a historic shift, bringing immutable, transparent, and auditable data from the federal government itself onto decentralized networks. This is not just a technological upgrade; it's a strategic move to enhance data accuracy, transparency, and accessibility for a global audience.

Specifically, Pyth Network has been selected to publish Gross Domestic Product (GDP) data, starting with quarterly releases going back five years, with plans to expand to a broader range of economic datasets. Chainlink, the other key partner, will provide data feeds from the Bureau of Economic Analysis (BEA), including Real Gross Domestic Product (GDP) and the Personal Consumption Expenditures (PCE) Price Index. This crucial economic information will be made available across a multitude of blockchain networks, including major ecosystems like Ethereum, Avalanche, Base, Bitcoin, Solana, Tron, Stellar, Arbitrum One, Polygon PoS, and Optimism.

This development is closer to science fiction than traditional finance. The same oracle network, Pyth, that secures data for over 350 decentralized applications (dApps) across more than 50 blockchains, processing over $2.5 trillion in total trading volume through its oracles, is now the system of record for the United States' core economic indicators. Pyth's extensive infrastructure, spanning over 107 blockchains and supporting more than 600 applications, positions it as a trusted source for on-chain data. This is not about speculative assets; it's about leveraging proven, robust technology for critical public services.

The significance of this collaboration cannot be overstated. By bringing official statistics on-chain, the U.S. government is embracing cryptographic verifiability and immutable publication, setting a new precedent for how governments interact with decentralized technology. This initiative aligns with broader transparency goals and is supported by Secretary of Commerce Howard Lutnick, positioning the U.S. as a world leader in finance and blockchain innovation. The decision by a federal entity to trust decentralized oracles with sensitive economic data underscores the growing institutional confidence in these networks.

This is the cycle of the great onboarding. The distinction between "Web2" and "Web3" is rapidly becoming obsolete. When government data, institutional flows, and grassroots builders all operate on the same decentralized rails, we are simply talking about the internet—a new iteration, yes, but the internet nonetheless: an immutable internet where data is not only published but also verified and distributed in real-time.

Pyth Network stands as tangible proof that this technology serves a vital purpose. It demonstrates that the industry has moved beyond abstract "crypto tech" to offering solutions that address real-world needs and are now actively sought after and understood by traditional entities. Most importantly, it proves that Web3 is no longer seeking permission; it has received the highest validation a system can receive—the trust of governments and markets alike.

This is not merely a fleeting trend; it's a crowning moment in global adoption. The U.S. government has just validated what many in the Web3 space have been building towards for years: that Web3 is not a sideshow, but a foundational layer for the future. The current cycle will be remembered as the moment the world definitively crossed this threshold, marking the last great opportunity to truly say, "we were early."

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US Dept of Commerce to publish GDP data on blockchain

On Tuesday during a televised White House cabinet meeting, Commerce Secretary Howard Lutnick announced the intention to publish GDP statistics on blockchains. Today Chainlink and Pyth said they were selected as the decentralized oracles to distribute the data.

Lutnick said, “The Department of Commerce is going to start issuing its statistics on the blockchain because you are the crypto President. And we are going to put out GDP on the blockchain, so people can use the blockchain for data distribution. And then we’re going to make that available to the entire government. So, all of you can do it. We’re just ironing out all the details.”

The data includes Real GDP and the PCE Price Index, which reflects changes in the prices of domestic consumer goods and services. The statistics are released monthly and quarterly. The biggest initial use will likely be by on-chain prediction markets. But as more data comes online, such as broader inflation data or interest rates from the Federal Reserve, it could be used to automate various financial instruments. Apart from using the data in smart contracts, sources of tamperproof data 👉will become increasingly important for generative AI.

While it would be possible to procure the data from third parties, it is always ideal to get it from the source to ensure its accuracy. Getting data directly from government sources makes it tamperproof, provided the original data feed has not been manipulated before it reaches the oracle.

Source

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List Of Cardano Wallets

Well-known and actively maintained wallets supporting the Cardano Blockchain are EternlTyphonVesprYoroiLaceADAliteNuFiDaedalusGeroLodeWalletCoin WalletADAWalletAtomicGem WalletTrust and Exodus.

Note that in case of issues, usually only queries relating to official wallets can be answered in Cardano groups across telegram/forum. You may need to consult with specific wallet support teams for third party wallets.

Tips

  • Its is important to ensure that you're in sole control of your wallet keys, and that the keys used can be restored via alternate wallet providers if a particular one is non-functional. Hence, put extra attention to Non-Custodial and Compatibility fields.
  • The score column below is strictly a count of checks against each feature listed, the impact of specific feature (and thus, score) is up to reader's descretion.
  • The table represents current state on mainnet network, any future roadmap activities are out-of-scope.
  • Info on individual fields can be found towards the end of the page.
  • Any field that shows partial support (eg: open-source field) does not score the point for that field.

Brief info on fields above

  • Non-Custodial: are wallets where payment as well as stake keys are not shared/reused by wallet provider, and funds can be transparently verified on explorer
  • Compatibility: If the wallet mnemonics/keys can easily (for non-technical user) be used outside of specific wallet provider in major other wallets
  • Stake Control: Freedom to elect stake pool for user to delegate to (in user-friendly way)
  • Transparent Support: Easy approachability of a public interactive - eg: discord/telegram - group (with non-anonymous users) who can help out with support. Twitter/Email supports do not count for a check
  • Voting: Ability to participate in Catalyst voting process
  • Hardware Wallet: Integration with atleast Ledger Nano device
  • Native Assets: Ability to view native assets that belong to wallet
  • dApp Integration: Ability to interact with dApps
  • Stability: represents whether there have been large number of users reporting missing tokens/balance due to wallet backend being out of sync
  • Testnets Support: Ability to easily (for end-user) open wallets in atleast one of the cardano testnet networks
  • Custom Backend Support: Ability to elect a custom backend URL for selecting alternate way to submit transactions transactions created on client machines
  • Single/Multi Address Mode: Ability to use/import Single as well as Multiple Address modes for a wallet
  • Mobile App: Availability on atleast one of the popular mobile platforms
  • Desktop (app,extension,web): Ways to open wallet app on desktop PCs
  • Open Source: Whether the complete wallet (all components) are open source and can be run independently.

Source

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XDC: xdcc2C02203C4f91375889d7AfADB09E207Edf809A6

 

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