The crypto scene in May has been full of action, with presales picking up speed and many altcoins pushing against key resistance points. As the market looks toward the second half of 2025, some networks are clearly gaining ground. Finding the right entry point now could set the stage for strong gains later this year. One presale, in particular, is drawing serious attention due to its growing traction and low entry price.

While Chainlink and Cosmos focus on new integrations and upcoming listings, and Aptos works to boost its liquidity, BlockDAG is turning heads with its active buyer contests and sharp presale stats. These four are shaping up to be top contenders, each offering something different to those tracking the top crypto to buy.

Let's break down what each project is doing and why they're making waves this May.

1. BlockDAG Surges Past $246M with 2800% ROI in Batch 29

BlockDAG has crossed an impressive $246 million in its ongoing presale, making it one of the top cryptos to buy this month. Now in Batch 29, the price sits at $0.029, but the project has frozen the price at $0.0020 until June 13th allowing a rare low-entry window. With over 20.2 billion BDAG coins already sold, the project has delivered a staggering 2800% gain since Batch 1.

One of the most talked-about features is BlockDAG�s Buyer Battles campaign, where daily rewards are offered to top buyers and referrers. The campaign includes 100 million BDAG in rewards, turning each day of the presale into a race. This system has kept the presale active and engaging.

Beyond numbers, BlockDAG shows strong delivery. Its X1 miner app has onboarded over 1 million users, and over $7 million worth of miners have been sold globally, totaling 17,000 shipped units. The network blends DAG architecture with Proof-of-Work and targets 15,000 transactions per second.

The protocol has already passed audits by CertiK and Halborn. Its Beta Testnet is live, and a full mainnet launch is approaching. With partnerships like Inter Milan and over 20 exchange listings in the pipeline, BlockDAG is advancing fast.

This blend of strong metrics and fast adoption makes it a clear top crypto to buy right now, especially while the price is frozen at $0.0020 until June 13th.

2. Chainlink Boosts Staker Rewards with New Campaign

Chainlink continues to hold ground as a top crypto to buy in May 2025. As of May 12, LINK trades at $17.10 and has kicked off a 90-day reward campaign called �Season Genesis.� Through this event, users staking LINK receive a share of 100 million SXT tokens from its partner Space and Time. Rewards started on May 8 and are designed to attract long-term participation.

Adding to the momentum, Chainlink recently broke out of a long-standing downward trend, signaling the chance of a broader move upward. With steady growth in oracle services and rising integrations across DeFi projects, LINK remains a key infrastructure play. Technical support and new incentives keep Chainlink among the top cryptos to buy heading into Q2.

3. Cosmos Gains Momentum After Bitbank Listing News

Cosmos (ATOM) is now trading around $5.32 and showing signs of renewed energy. The price bounced 4.5% from a recent low of $4.44, indicating a potential shift in sentiment. The momentum follows Cosmos�s upcoming listing on Bitbank, a major Japanese exchange, set for May 13. This listing is expected to widen access in the Asian market.

Cosmos continues to appeal to developers for its interoperability and modular SDK approach. As more app-specific blockchains emerge, the Cosmos ecosystem remains a practical choice. This combination of technical flexibility and new exchange access puts it on the list of top cryptos to buy in 2025.

4. Aptos Eyes Upside Despite May 12 Token Unlock

Aptos is currently priced at $5.95 and preparing for a large unlock of 11.31 million APT (around $65 million) on May 12. While this may create temporary pressure, the project�s roadmap shows potential upside. Binance reported that the APT/USDT pair hit $9.05 earlier this month, hinting at strong demand when liquidity rises.

Aptos is also upgrading its global trading engine to improve performance and accessibility. These changes align with its long-term goals of supporting high-speed Layer 1 transactions. Despite the volatility, Aptos remains on the radar as a top crypto to buy, particularly for those watching price reactions post-unlock.

Which Is the Best Crypto to Watch Now?

Each of these four projects, Chainlink, Cosmos, Aptos, and BlockDAG, brings something unique to the table. Chainlink is rewarding long-term participants, Cosmos is making exchange moves, and Aptos is fine-tuning its infrastructure. But BlockDAG stands out for its delivery, growth, and ROI.

With $246M raised, over 20.2 billion coins sold, and 2800% gains already recorded, BlockDAG is more than just a presale story. The $0.0020 price is frozen until June 13th, and its real-world tools like the X1 app and ongoing exchange partnerships show clear progress.

For those looking at the top cryptos to buy with strong upside potential, BlockDAG is leading the charge into the second half of 2025.

(Disclaimer: Crypto products and NFTs are unregulated and can be highly risky. There may be no regulatory recourse for any loss from such transactions. Cryptocurrency is not a legal tender and is subject to market risks. Readers are advised to seek expert advice and read offer document(s) along with related important literature on the subject carefully before making any kind of investment whatsoever. Cryptocurrency market predictions are speculative and any investment made shall be at the sole cost and risk of the readers.)