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Bitcoin Layer 2

Rebar aims to launch Bitcoin-native MEV Shield by end of 2024 — CEO

The startup is onboarding BTC miners representing a “sizable amount” of the Bitcoin network’s total hashrate, according to Alex Luce. 

Rebar Labs aims to launch the first Bitcoin-native platform for shielding traders from maximum extractable value (MEV) strategies, such as fron-trunning, by the end of 2024, CEO Alex Luce told Cointelegraph in an interview. 

Bitcoin’s emerging ecosystem of native decentralized exchanges (DEXs) and layer-2 (L2) scaling solutions has reinvigorated the oldest blockchain network but has also created new risks for traders, including harmful MEV. 

“Right now, if we’re talking about MEV, the most obvious example on Bitcoin is front-running,” Luce said. “It’s happening fairly often.”

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Galaxy Research warns of sustainability issues for Bitcoin layer-2 rollups

The future of Bitcoin rollups will depend on continued innovation and optimization in data compression and scalability.

A Galaxy Research report has suggested that most Bitcoin layer-2 scaling networks, particularly “rollups,” may not be sustainable in the long term despite their popularity as a promising method to keep Bitcoin payments cheap, fast and decentralized. 

In the report published on Friday, Aug. 2, Galaxy analyst Gabe Parker highlighted the cost of posting data as a fundamental challenge Bitcoin rollups face that post data to the base layer.

Parker explained that for Bitcoin rollups to thrive, they must generate substantial revenue from transaction fees on their own networks. This revenue must come from many users willing to pay for transactions on the layer-2 networks.

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Alex Labs rolls out post-exploit recovery plan

Alex Labs has revealed a recovery roadmap and enhanced security measures post-exploit aimed at rebuilding community trust and resuming operations.

Alex Labs, a Bitcoin layer-2 (L2) developer, announced its roadmap to restore community trust and restart operations on its platform after a recent breach.

The Alex Labs Foundation has two ongoing governance votes, including the re-opening of pools and plans to roll out the migration of its native token and automated market maker (AMM).

The Alex Lab Foundation hosted an X Space on May 29, during which the team detailed the recovery process, answered community questions, and discussed governance.

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Alex bridge on BNB Smart Chain drained of $4.3M after suspicious upgrade — CertiK

The deployer account changed an Alex contract’s implementation address, and multiple tokens were subsequently drained from its bridge.

According to a May 14 report from blockchain security platform CertiK, the Alex protocol bridge on the BNB Smart Chain network suffered $4.3 million in suspicious withdrawals just after its contract was suddenly upgraded.

Alex is a Bitcoin layer-2 protocol. According to its official website, it provides decentralized finance applications on Bitcoin. Its bridges are used to transfer assets from other networks, such as BNB Smart Chain and Ethereum, to its own network.

Blockchain data confirms that the Alex deployer account performed five identical upgrades to the “Bridge Endpoint” contract on BNB Smart Chain beginning at 3:56 pm UTC. Approximately $4.3 million worth of Binance-Pegged Bitcoin (BTC), USD Coin (USDC), and Sugar Kingdom Odyssey (SKO) were subsequently removed from the BNB Smart Chain side of the bridge.

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Binance completes integration of Bitcoin Lightning Network

The news comes less than a month after Binance announced their plans to integrate Bit Lightning Network.

Cryptocurrency exchange Binance has completed the integration of the Bitcoin Lightning Network on its platform for BTC withdrawals and deposits.

The development was confirmed by Binance in a July 17 blog post, where they noted that Binance users can now use the layer-2 scaling solution for BTC withdrawals and deposits.

When users now choose to withdraw or deposit Bitcoin, they will now be able to select "LIGHTNING" as an option. Other options include BNB Smart Chain (BEP20), Bitcoin, BNB Beacon Chain (BEP2), BTC (SegWit), and Ethereum ERC20. 

Screenshot showing users can select "LIGHTNING" as an option when depositing Bitcoin. Source: Cointelegraph

Binance first hinted at the integration of the Lightning Network in May after it had to temporarily pause BTC withdrawals due to a flood of pending transactions caused by "the recent surge in BTC network gas fees."

The explosion in transaction fees has largely been attributed to the creation of memecoins on Bitcoin in the form of BRC-20 tokens — a new token standard on the network.

Binance later confirmed it was working to onboard the Lightning Network on June 20 shortly after users spotted Binance's own Lightning nodes. 

Related: What is the Bitcoin Lightning Network, and how does it work?

Binance joins Bitfinex, River Financial, OKX, Kraken and CoinCorner as the other prominent exchanges to have embraced the Lightning Network.

Coinbase CEO Brian Armstrong also signaled his intention to integrate the Bitcoin layer 2 network on Coinbase in April. However, he didn't give a timeline as to when that may happen.

The Lightning Network aims to make Bitcoin transactions faster and cheaper by allowing users to create off-chain transaction channels.

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