El Salvador has added 21 bitcoins to its treasury on the 21^st day of the last month of the 21st year of the 21^st century. President Nayib Bukele said he made the purchase at 21:21:21 and pointed out El Salvador’s land area is 21,000 square kilometers when announcing the purchase.

Cryptocurrency-friendly browser Opera has announced it’s integrating Polygon (MATIC) into its built-in cryptocurrency wallet. The integration is scheduled to go live in Q1 2022 and to open Polygon’s ecosystem to Opera’s over 80 million Android users.

The boom in Decentralized Finance (DeFi) has been fueled by various projects on the Ethereum blockchain that later expanded to other protocols. Uniswap is one of them.

Sponsored: You’ve probably heard all about Curve Finance, the popular decentralized exchange for stablecoins, but may be put off by having to manage another on-chain wallet. Bybit has simplified the process for users like you, so you can get easy access to DeFi on Bybit.

Top stories in the Crypto Roundup today:

• El Salvador Buys 21 Bitcoins on 21^st Day of 2021’s Last Month
• Opera Browser to Integrate Polygon
• Uniswap Launches on Polygon
• What Is Uniswap?
• Sponsored: Check Out The Newest Liquidity Mining Pool on Curve Finance

El Salvador Buys 21 Bitcoins on 21st Day of 2021’s Last Month

El Salvador has added 21 bitcoins to its treasury on the 21^st day of the last month of the 21st year of the 21^st century. President Nayib Bukele said he made the purchase at 21:21:21 and pointed out El Salvador’s land area is 21,000 square kilometers when announcing the purchase.

Before the new purchase, the Central American nation held 1,120 bitcoins in its treasury, meaning its total is now 1,141 BTC worth over $55 million.

The country is reportedly planning to buy another $500 million worth of the cryptocurrency with funds from the issuance of $1 billion worth of tokenized bonds. In September, El Salvador became the only country to use bitcoin as legal tender. Bukele has earlier announced plans to create a “Bitcoin City” where residents won’t have to pay taxes.

The 21 figure is relevant in the Bitcoin community, as the cryptocurrency’s maximum supply is capped at 21 million coins. The figure was chosen to align with the M1 money supply of fiat currencies at the time Bitcoin was created, which was 21 trillion. Bitcoin’s Coinbase rewards also halve every 210,000 blocks.

Opera Browser to Integrate Polygon

Cryptocurrency-friendly browser Opera has announced it’s integrating Polygon (MATIC) into its built-in cryptocurrency wallet. The integration is scheduled to go live in Q1 2022 and to open Polygon’s ecosystem to Opera’s over 80 million Android users.

Polygon is a layer-two Ethereum scaling solution designed to lower gas fees and provide faster transaction times. Through the integration, Opera’s users will be able to access decentralized applications on the Polygon network. These include decentralized exchange SushiSwap and crypto lending platform Aave.

The executive vice president of Opera Mobile, Jorgen Arnesen, said the integration will “remove the biggest challenge that crypto enthusiasts” currently face, which is high transaction fees.

Opera’s built-in cryptocurrency wallet currently supports Ethereum, TRON, Bitcoin, Celo, and has plans to integrate Solana as well.

Uniswap Launches on Polygon

The largest decentralized exchange on Ethereum has launched on Polygon. The move comes after Uniswap’s UNI token holders voted on a proposal to launch on Polygon that received 99.3% support with 72 million votes in favor of launching against 500,000 against.

The price of MATIC and Uniswap’s UNI token both moved higher on the news, with MATIC hitting a fresh all-time high above $2.66. Mihailo Bjelic, co-founder of Polygon, was quoted saying that Ethereum “introduced a noble vision of an open, borderless economic system accessible to everyone,” but added fees priced out most users.

Uniswap’s launch on Polygon, he added, aims to change that:

“With this deployment, Uniswap as the flagship Ethereum application returns back to the original vision and again offers low fees and open access to everyone.”

Uniswap has already been deployed on two other layer-two scaling solutions, Arbitrum and Optimism. Data shows there are $62.19 million in total value locked on Uniswap on Arbitrum and $36.94 on Optimism. On Ethereum, the decentralized exchange has $8.75 billion in total value locked.

What is Uniswap?

The boom in Decentralized Finance (DeFi) has been fueled by various projects on the Ethereum blockchain that later expanded to other protocols. Uniswap is one of them.

At its core, Uniswap is a decentralized automated market maker (AMM). It’s a decentralized exchange that does not have an order book, a token listing evaluation process, and can be used directly from an Ethereum wallet like Metamask.

Instead of using an order book, Uniswap uses a model that requires liquidity providers to deposit their funds into liquidity pools. Uniswap matches buy and sell orders against these liquidity pools, and uses a decentralized pricing mechanism that smooths out order book depth. The code behind it is open-source and can be reviewed on GitHub.

Find out more on CryptoCompare’s guide on Uniswap below.

Check Out The Newest Liquidity Mining Pool on Curve Finance

You’ve probably heard all about Curve Finance, the popular decentralized exchange for stablecoins, but may be put off by having to manage another on-chain wallet. 

Bybit has simplified the process for users like you, so you can get easy access to DeFi on Bybit. 

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1. Choose among 7-, 14-, and 21-day product plans.
2. Stake USDT. 
3. Sit back and collect your rewards.

It’s that easy. 

Terms and conditions apply. Check it out now!

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