The crypto market has been busy in May, with presales heating up and altcoins testing key resistance levels.

What's clear is that some networks are gaining momentum for the second half of 2025, and picking the right entry points now could mean big rewards down the line.

May has been a busy month in crypto, with presales heating up, altcoins testing key resistance levels, and some networks setting up nicely for the second half of 2025. It’s clear that picking the right entry points now could mean big rewards down the line.

While platforms like Chainlink and Cosmos are working on new integrations and listings, and Aptos expands liquidity access, a fresh opportunity is arising with BlockDAG's daily buyer battles and presale metrics. The competition between these four is strong, but each offers its own angle for those looking at the top cryptos to buy now.

Here’s a deeper look at all four networks making headlines in May 2025 and why they’ve secured their spot on this list.

1. BlockDAG Presale Hits $240.5M As Deadline Nears

BlockDAG's presale has officially crossed the $240.5 million mark, with nearly 20 billion BDAG coins sold so far. The current price sits at $0.0262 in Batch 28, offering what could be the final entry point before a major jump.

What's fueling the buzz is its "Buyer Battles" campaign, where top referrers and big buyers earn daily BDAG rewards. The setup has turned buying into a competitive event, with 100 million BDAG up for grabs, adding serious momentum to the presale and keeping BlockDAG in the spotlight.

But the attention isn't just hype; it's supported by delivery. The X1 mobile mining app now has over 1 million users, showcasing strong real-world traction. The network itself combines DAG architecture with Proof-of-Work, targeting speeds up to 15,000 TPS. CertiK and Halborn have audited the protocol, and the live beta testnet is already showcasing network capabilities.

With 17,000 miners shipped, Inter Milan partnerships secured, and 10+ exchange listings on the roadmap, BlockDAG is backed by actual progress. With time running out at the current price, it's earning a top spot among the top cryptos to buy now, especially for those looking at early-stage opportunities with high upside.

2. Chainlink Unlocks New Rewards For Stakers

Chainlink has stayed on the radar thanks to its strong fundamentals and recent technical momentum. As of May 12, LINK is priced at $17.10 and has just launched its "Season Genesis" staking reward program. This program enables users who stake LINK to earn a share of 100 million SXT tokens from Chainlink's partner, Space and Time. Claims began on May 8 and will run for 90 days, offering interesting incentives for both current holders and new participants.

In terms of technical trends, Chainlink recently broke a long-term descending trendline, suggesting that a potential price reversal could be in play. This bullish breakout has drawn attention to LINK again as a contender among the top cryptos to buy now. The network continues expanding its real-world data integrations and oracles, making it critical infrastructure for DeFi. As market confidence returns and technical setups align, Chainlink may offer strong upside for those buying in during its current range.

3. Cosmos Listing Drives New Momentum

Cosmos is showing signs of renewed demand after a stretch of low volatility. ATOM is trading at $5.32 with minor intraday fluctuations, but there has been a recent spike in interest following news of its listing on Bitbank, a leading Japanese exchange, set for May 13. This move is expected to boost liquidity and access for Japanese traders and may drive additional volume and interest across Asia in the coming week.

Just a few days ago, Cosmos saw a 4.5% rebound from $4.44, suggesting that bulls are stepping in again. Analysts are also watching closely as institutional interest builds around the Cosmos ecosystem. Its interoperability approach and modular SDK continue to attract developers who are building app-specific blockchains. For those scouting undervalued coins before they regain broader attention, Cosmos makes a strong case to be counted among the top cryptos to buy now, especially with listings and network upgrades aligning in Q2 2025.

4. Aptos Prepares For Token Unlock Amid Trading Engine Upgrade

Aptos is another coin that's making headlines in May, though it's navigating a bit of a mixed setup. The price currently sits around $5.95, with short-term weakness following a broader market cooldown. However, Aptos is upgrading its global trading engine to boost liquidity, and Binance reports that the APT/USDT pair jumped to $9.05 in earlier May trades. This suggests that latent demand is present, especially in high-volume environments.

There's also a major event to watch: an unlock of 11.31 million APT tokens, valued at roughly