8 min readOver the last couple of years, BTC has established itself as a respectable and even sought-after asset, which allowed it to reach its all-time high last August, exceeding $124,000. The approval of the first spot Bitcoin ETFs in January 2024 acted as a trigger. Bitcoin is now considered both a store of value and a key component of any investment portfolio.
But while Bitcoin remains the most recognized cryptocurrency, it is far from being the only asset with strong potential. Beyond BTC, altcoins—a term used to qualify digital assets that are not Bitcoin—are driving a rapidly expanding ecosystem, with new applications emerging every day.
Ethereum, whose blockchain underpins much of the decentralized finance (DeFi) sector, is joined by networks like Solana, Sui, and Sei—each bringing its own strengths and services to the ecosystem.
Altcoins as infrastructure for finance
Altcoins are central to the growth of the crypto ecosystem. The most significant among them, Ethereum, introduced smart contracts—a breakthrough that paved the way for decentralised finance (DeFi). It refers to the entire financial ecosystem built on blockchain technology.
Unlike traditional finance, DeFi operates without intermediaries, relying instead on smart contracts, meaning autonomous programs that automatically validate and record transactions on the blockchain. This creates a transparent, auditable, and accessible infrastructure where anyone can build decentralized applications (dApps) while removing the need for costly third parties.
Beyond the removal of intermediaries, one of the main advantages of DeFi is that anyone can participate, without needing large amounts of capital, privileged contacts, or special authorizations.
DeFi paves the way for an endless variety of new financial applications and products. For example, yield farming allows users to deposit their crypto assets into protocols to earn interest, often rewarded with additional tokens. Automated liquidity, on the other hand, relies on liquidity pools funded by users, enabling instant trades without traditional order books.
In recent years, many new players have emerged, bringing innovative solutions and improving the overall infrastructure of the DeFi ecosystem. Blockchains such as Solana, Sui, and Sei now offer high-performance infrastructures designed to process transactions faster and at lower cost. These networks can handle thousands of transactions for just a fraction of a cent—far more competitive than the fees charged by the traditional financial system for wire transfers, international payments, or stock trading.
We can also point to DeFi protocols such as AAVE, Hyperliquid, or Morpho, which deliver core financial services like lending, borrowing, and liquidity management. For instance, AAVE is an open-source protocol that enables anyone to earn interest on deposit assets while also facilitating borrowing digital cash (stablecoins): as of 29 September 2025, it manages over $43 billion of value, according to the analytic website Defillama.
Also mentioned here, Hyperliquid is a new type of decentralised exchange, which processes sub-second trading operations while enabling its stakeholders to create markets on top of it: tokenised stocks, real-world assets, and prediction markets. Since the beginning of 2025, it has generated between $130 million and $280 million of revenue per quarter.
Morpho is also a lending platform, with over $7 billion circulating on its protocol according to Defillama, which also enables anyone to build permissionless applications on top of it.
All these platforms enable users to make their digital assets productive, either by supplying tokens to earn yield or by accessing liquidity without having to sell their holdings.
In this way, they not only boost capital efficiency but also highlight how altcoins are building the foundations of a parallel financial system that increasingly competes with traditional banking.
The key takeaway is that altcoins are far from being all just speculative tokens. They fuel infrastructures that enable the development of an infinite range of digital financial applications. And some of them allow investors to gain direct exposure to this new economy by making token holders actual stakeholders.
Use cases gaining traction
If Bitcoin introduced blockchain transactions, altcoins enabled the creation of increasingly diverse use cases.
One of the most notable trends in crypto today is the rapid rise of stablecoins - digital assets pegged to traditional fiat currencies. Their adoption is accelerating, with daily transaction volumes recently surpassing $200 billion and a total market capitalisation approaching $300 billion. Ripple, for example, recently launched RLUSD, a dollar-backed stablecoin, joining established leaders like Tether’s USDT and Circle’s USDC.
The growth of stablecoins is closely tied to the expansion of DeFi, where they serve as a reliable medium of exchange and store of value, shielded from the high volatility of other cryptocurrencies. According to DeFiLlama, their whole capitalisation in the decentralised finance protocols has reached $297 billion as of 29 September 2025. Acting as a bridge between traditional finance and DeFi, they are also particularly well-suited for cross-border payments, as they enable fast transactions with low fees.
On September 30, Visa announced that it would begin testing stablecoins to manage cross-border transactions, illustrating that industry leaders are now engaged.
Another sign of blockchain and cryptocurrency adoption is the rise of crypto sovereign wealth funds, a growing number of which are integrating altcoins. Companies are also following the trend. In recent months, the number of corporate crypto treasuries has surged. While Bitcoin opened the way, Ethereum, Solana, and now even Dogecoin are attracting the attention of many businesses.
These trends highlight a broader movement: traditional finance is increasingly integrating blockchain and crypto.
The investor perspective: why it matters
At first glance, altcoins may seem like a riskier bet than Bitcoin, whose growth has been relatively steady over the past decade compared to other cryptocurrencies.
Yet higher risk often comes with the possibility of higher returns. Investing in altcoins can be compared to backing startups. While only a handful of projects will ultimately prove profitable—much like how most start-ups fail—some are likely to deliver spectacular growth.
Ethereum and Solana have already demonstrated significant gains since their inception (+160,000% for ETH; +27,412% for SOL, as of 06 October 2025, according to CoinMarketcap), and other assets are attempting to replicate this trajectory and capture some of their market share.
In many ways, altcoins represent a true revolution in the investment landscape. For the first time, anyone, regardless of starting capital, can participate in projects that may become pillars of the new financial system now taking shape.
The future rails of finance
Bitcoin remains the central pillar of the crypto ecosystem, but altcoins are laying the foundations of tomorrow’s finance—a system that will, in part, be built on blockchain.
From stablecoins to DeFi applications like lending or borrowing, we are witnessing the emergence of a whole new financial ecosystem.
This moment is reminiscent of the early 2000s internet boom. Most of the companies and websites from that era have since vanished, yet those who bought Amazon shares back then can attest that the risk was worth taking.
The question is no longer whether altcoins have a future, but which ones will rise to become the pillars of global finance in the years ahead.
