Stellar Protocol 27 and Hedera Block Streams Boost Blockchain Performance and Security

What shipped

The cryptocurrency market is showing promising signs of growth this week, with several key projects releasing important updates and maintaining steady price gains. Bitcoin, the pioneer of cryptocurrencies, is currently trading around $62,037, up over 2% in the last 24 hours. Ethereum, known for its smart contract capabilities, has seen an even stronger 4.17% increase, pushing its price to about $1,627. Meanwhile, other notable networks like Flare, Hedera Hashgraph, Ripple, and XDC Network have also reported positive price movements, with Flare and Hedera seeing gains above 2%.

Among the most significant developments is the Stellar network’s rollout of its Protocol 27 upgrade, nicknamed “Stellar Zipper.” This upgrade aims to improve the network’s speed and efficiency, making it easier for users and developers to transact and build on Stellar. The Stellar Foundation has published a detailed upgrade guide to help the community understand what’s new and how to prepare.

Hedera Hashgraph is also making waves by transitioning its mirror node infrastructure to use “Block Streams” instead of the older Record Stream technology starting September 2026. Mirror nodes are special nodes that keep a copy of all transaction history, making it easier for developers to access data. Hedera’s announcement includes a call to action for mirror node operators to upgrade their systems accordingly. Additionally, Hedera has been focusing on MEV-resistance — a technical feature that helps protect networks from certain types of transaction manipulation, which is especially important for institutional users.

Why it matters

These updates highlight the ongoing efforts of blockchain projects to enhance usability, security, and scalability — three critical factors for wider adoption. For newcomers, it’s helpful to know that:

• Protocol upgrades like Stellar’s improve network performance and user experience.
• Infrastructure improvements such as Hedera’s Block Streams enable faster, more reliable access to blockchain data.
• MEV-resistance (Miner Extractable Value resistance) helps prevent unfair advantages in transaction ordering, which can protect investors and institutions.

Ripple and Stellar continue to focus on expanding their reach, especially in regions where access to financial services is limited. Stellar recently shared insights on bringing its platform to areas that matter most, emphasizing the network’s mission to connect financial systems globally.

Meanwhile, the broader market sentiment around Bitcoin has been shifting. According to recent analysis, institutional investors — large financial organizations like banks and hedge funds — are showing a stronger interest in Bitcoin compared to earlier this year. This is a positive sign, as institutional involvement often brings more stability and legitimacy to the market. However, Bitcoin’s price movements are influenced by a mix of factors including developments in artificial intelligence, tech IPOs, and even quantum computing advancements, making the landscape dynamic.

Builders’ corner

If you’re interested in developing on these networks or simply want to understand the technology better, here are some key points:

• Stellar’s Protocol 27 upgrade introduces enhanced transaction processing and new features that make it easier for developers to build fast, cost-efficient applications. The upgrade guide is a great resource for technical teams looking to stay up to date.
• Hedera’s switch to Block Streams means developers and data analysts should prepare their nodes to handle the new data format. This will improve data access speed and reliability.
• MEV-resistance is becoming a standard expectation for blockchains targeting institutional users. Hedera’s recent blog explains why this feature is critical for secure, fair blockchain infrastructure.
• Ripple and Stellar are working on cross-border payment solutions that could make sending money internationally faster and cheaper, especially for underserved markets.

For those curious about privacy enhancements in blockchain, Chainlink has been actively working on bringing privacy-preserving technologies to decentralized finance (DeFi), which could open new doors for secure and confidential transactions.

Quick prices

• Bitcoin (BTC): $62,037 (+2.13%)
• Ethereum (ETH): $1,627.83 (+4.17%)
• Flare Networks (FLR): $0.00697 (+4.10%)
• Hedera Hashgraph (HBAR): $0.08117 (+2.35%)
• Ripple (XRP): $1.14 (+3.75%)
• Stellar (XLM): $0.20718 (-2.07%)
• XDC Network (XDCE): $0.02967 (+1.45%)

What to watch

Looking ahead, here are some developments worth keeping an eye on:

• Stellar’s ongoing adoption in new regions and industries, especially following the Protocol 27 upgrade. This could lead to increased transaction volume and network activity.
• Hedera’s infrastructure transition to Block Streams, which will be completed by September 2026. Developers and node operators should plan upgrades to avoid disruptions.
• Institutional interest in Bitcoin as it continues to hover around the $60,000 mark. Watch for announcements from large financial firms that could influence market trends.
• Advances in blockchain privacy led by projects like Chainlink, potentially making decentralized finance more secure and appealing to a broader audience.
• Ripple and Stellar’s partnerships and expansion efforts, which may open new use cases for cross-border payments and financial inclusion.

TL;DR: The crypto market is showing steady growth with Bitcoin and Ethereum leading gains. Stellar’s Protocol 27 upgrade and Hedera’s infrastructure improvements signal ongoing innovation focused on speed, security, and usability. Institutional interest in Bitcoin is rising, and projects like Ripple and Stellar continue expanding their global reach. For developers and investors alike, this is an exciting time to watch blockchain technology evolve and open new opportunities.