The Bitcoin (BTC) price again reached an all-time high in 2025, as values exceeded over 115,970.58 USD on September 14, 2025. Price hikes in early 2025 were connected to the approval of Bitcoin ETFs in the United States, while previous hikes in 2021 were due to events involving Tesla and Coinbase, respectively. Tesla's announcement in March 2021 that it had acquired 1.5 billion U.S. dollars' worth of the digital coin, for example, as well as the IPO of the U.S.'s biggest crypto exchange, fueled mass interest. The market was noticeably different by the end of 2022, however, after another crypto exchange, FTX, filed for bankruptcy.Is the world running out of Bitcoin?Unlike fiat currency like the U.S. dollar - as the Federal Reserve can simply decide to print more banknotes - Bitcoin's supply is finite: BTC has a maximum supply embedded in its design, of which roughly 89 percent had been reached in April 2021. It is believed that Bitcoin will run out by 2040, despite more powerful mining equipment. This is because mining becomes exponentially more difficult and power-hungry every four years, a part of Bitcoin's original design. Because of this, a Bitcoin mining transaction could equal the energy consumption of a small country in 2021.Bitcoin's price outlook: a potential bubble?Cryptocurrencies have few metrics available that allow for forecasting, if only because it is rumored that only a few cryptocurrency holders own a large portion of the available supply. These large holders - referred to as 'whales'-are' said to make up two percent of anonymous ownership accounts, while owning roughly 92 percent of BTC. On top of this, most people who use cryptocurrency-related services worldwide are retail clients rather than institutional investors. This means outlooks on whether Bitcoin prices will fall or grow are difficult to measure, as movements from one large whale are already having a significant impact on this market.

The share of stablecoins within the overall crypto market was below that of Ethereum (ETH) and Bitcoin (BTC). This would mark a significant rise of the digital asset, as earlier calculations from December 2021 indicated a stablecoin market share of ***** percent. What may play a part in these figures is that "regular" cryptocurrencies such as Ethereum saw a significant decline in price between May and June 2022, leading to their market cap to decline as well. Fiat-backed stablecoins like Tether, USD Coin and Binance USD, on the other hand, were not as impacted. That said, the crash of algorithmic stablecoin TerraUSD and its token Terra (LUNA) led to much uncertainty on whether non-fiat-backed stablecoins could work.

In March 2024 Bitcoin BTC reached a new all-time high with prices exceeding 73000 USD marking a milestone for the cryptocurrency market This surge was due to the approval of Bitcoin exchange-traded funds ETFs in the United States allowing investors to access Bitcoin without directly holding it This development increased Bitcoin’s credibility and brought fresh demand from institutional investors echoing previous price surges in 2021 when Tesla announced its 15 billion investment in Bitcoin and Coinbase was listed on the Nasdaq By the end of 2022 Bitcoin prices dropped sharply to 15000 USD following the collapse of cryptocurrency exchange FTX and its bankruptcy which caused a loss of confidence in the market By August 2024 Bitcoin rebounded to approximately 64178 USD but remained volatile due to inflation and interest rate hikes Unlike fiat currency like the US dollar Bitcoin’s supply is finite with 21 million coins as its maximum supply By September 2024 over 92 percent of Bitcoin had been mined Bitcoin’s value is tied to its scarcity and its mining process is regulated through halving events which cut the reward for mining every four years making it harder and more energy-intensive to mine The next halving event in 2024 will reduce the reward to 3125 BTC from its current 625 BTC The final Bitcoin is expected to be mined around 2140 The energy required to mine Bitcoin has led to criticisms about its environmental impact with estimates in 2021 suggesting that one Bitcoin transaction used as much energy as Argentina Bitcoin’s future price is difficult to predict due to the influence of large holders known as whales who own about 92 percent of all Bitcoin These whales can cause dramatic market swings by making large trades and many retail investors still dominate the market While institutional interest has grown it remains a small fraction compared to retail Bitcoin is vulnerable to external factors like regulatory changes and economic crises leading some to believe it is in a speculative bubble However others argue that Bitcoin is still in its early stages of adoption and will grow further as more institutions and governments recognize its potential as a hedge against inflation and a store of value 2024 has also seen the rise of Bitcoin Layer 2 technologies like the Lightning Network which improve scalability by enabling faster and cheaper transactions These innovations are crucial for Bitcoin’s wider adoption especially for day-to-day use and cross-border remittances At the same time central bank digital currencies CBDCs are gaining traction as several governments including China and the European Union have accelerated the development of their own state-controlled digital currencies while Bitcoin remains decentralized offering financial sovereignty for those who prefer independence from government control The rise of CBDCs is expected to increase interest in Bitcoin as a hedge against these centralized currencies Bitcoin’s journey in 2024 highlights its growing institutional acceptance alongside its inherent market volatility While the approval of Bitcoin ETFs has significantly boosted interest the market remains sensitive to events like exchange collapses and regulatory decisions With the limited supply of Bitcoin and improvements in its transaction efficiency it is expected to remain a key player in the financial world for years to come Whether Bitcoin is currently in a speculative bubble or on a sustainable path to greater adoption will ultimately be revealed over time.

Bitcoin's circulating supply has grown steadily since its inception in 2009, reaching over **** million coins by late July 2025. This gradual increase reflects the cryptocurrency's design, which put a limit of ** million on the total number of bitcoins that can ever exist. This impacts the Bitcoin price somewhat, as its scarcity can lead to volatility on the market. Maximum supply and scarcity Bitcoin is unusual from other cryptocurrencies in that its maximum supply is getting closer. By July 2025, more than ** percent of all possible Bitcoin had been created. That said, Bitcoin's circulating supply is expected to reach its maximum around the year 2140. Meanwhile, mining becomes exponentially more difficult and energy-intensive. Institutional investors In 2025, countries like the United States openly started discussing the possibility of buying bitcoins to hold in reserve. By the time of writing, it was unclear whether this would happen. Nevertheless, institutional investors displayed more interest in the cryptocurrency than before. Certain companies owned several thousands of Bitcoin tokens in 2025, for example. This and the limited number of Bitcoin may further fuel price volatility.

Following NFT hype and growing demand in the DeFi community, the price of cryptocurrency Solana, or SOL, more than tripled during the summer of 2021. This had all but evaporated by the end of 2022, as a price of 242.67 U.S. dollars for SOL on September 14, 2025, was similar to the price of Solana in early 2021. The collapse of crypto trader FTX in 2022 especially impacted the cryptocurrency, as FTX and its sister firm Alameda Research sold a large amount of the coin to avoid bankruptcy. The Solana protocol is similar to Ethereum in that it can allow for non-fungible tokens to be created ('minted') or traded. Solana, however, uses a technology called 'PoH' or Proof of History, which allows it to reach high transaction speeds. The Solana Foundation, the creators of the protocol, based in Switzerland, claims they could reach up to 65,000 transactions per second compared to 16 for Ethereum. Additionally, Solano had no transaction fees or 'gas', unlike Ethereum, which had growing transaction costs. These two reasons combined - Solana being deemed cheaper and faster than Ethereum - turned this relatively young protocol into a breeding ground for NFT projects in August 2021.

A league table of the 120 cryptocurrencies with the highest market cap reveals how diverse each crypto is and potentially how much risk is involved when investing in one. Bitcoin (BTC), for instance, had a so-called "high cap" - a market cap worth more than ** billion U.S. dollars - indicating this crypto project has a certain track record or, at the very least, is considered a major player in the cryptocurrency space. This is different in Decentralize Finance (DeFi), where Bitcoin is only a relatively new player. A concentrated market The number of existing cryptocurrencies is several thousands, even if most have a limited significance. Indeed, Bitcoin and Ethereum account for nearly ** percent of the entire crypto market capitalization. As crypto is relatively easy to create, the range of projects varies significantly - from improving payments to solving real-world issues, but also meme coins and more speculative investments. Crypto is not considered a payment method While often talked about as an investment vehicle, cryptocurrencies have not yet established a clear use case in day-to-day life. Central bankers found that usefulness of crypto in domestic payments or remittances to be negligible. A forecast for the world's main online payment methods took a similar stance: It predicts that cryptocurrency would only take up *** percent of total transaction value by 2027.

Bitcoin ranked as one of the most expensive cryptocurrencies existing by April 2024 - although values changed noticeably. Bitcoin had the most expensive cryptocurrency for a while, but Ethereum was significantly cheaper, with a price that was roughly 30 times less than that of the most well-known digital currency. However, Bitcoin is in a unique position. Ethereum is one of several cryptocurrencies, for instance, that come from blockchains that focus on making financial applications possible. Bitcoin, or a digital equivalent of gold When one categorizes the different types of cryptocurrencies, Bitcoin stands out as it is one of the few that are essentially meant to store digital value. Some describe Bitcoin as a digital version of gold, purely designed to hold or possibly purchasing power over time. It has no other applications built around it, and is considered too slow to perform financial transactions. Stablecoins, the less volatile cryptocurrency Many coins in this ranking stand out as their price seemingly has not changed as much as others. This is because these are stablecoins - cryptocurrencies pegged to the price development of an external asset. This group of digital assets comprise an increasing share within the overall crypto market. Some see these coins as the future of retail payments, whereas others view these coins as a "safe" addition to their crypto investments.

Ethereum's price history suggests that that crypto was worth more in 2025 than during late 2021, although nowhere near the highest price recorded. Much like Bitcoin (BTC), the price of ETH went up in 2021 but for different reasons altogether: Ethereum, for instance, hit the news when a digital art piece was sold as the world's most expensive NFT for over 38,000 ETH - or 69.3 million U.S. dollars. Unlike Bitcoin, of which the price growth was fueled by the IPO of the U.S.'s biggest crypto trader, Coinbase, the rally on Ethereum came from technological developments that caused much excitement among traders. First, the so-called 'Berlin update' rolled out on the Ethereum network in April 2021, an update that would eventually lead to the Ethereum Merge in 2022 and reduced ETH gas prices - or reduced transaction fees. The collapse of FTX in late 2022, however, changed much for the cryptocurrency. As of August 27, 2025, Ethereum was worth 4,602.37 U.S. dollars - significantly less than the 4,400 U.S. dollars by the end of 2021.Ethereum's future and the DeFi industryPrice developments on Ethereum are difficult to predict but cannot be seen without the world of DeFi, or decentralized finance. This industry used technology to remove intermediaries between parties in a financial transaction. One example includes crypto wallets such as Coinbase Wallet that grew in popularity recently, with other examples including smart contractor Uniswap, Maker (responsible for stablecoin DAI), moneylender Dharma and market protocol Compound. Ethereum's future developments are tied with this industry: Unlike Bitcoin and Ripple, Ethereum is technically not a currency but an open-source software platform for blockchain applications, with Ether being the cryptocurrency that is used inside the Ethereum network. Essentially, Ethereum facilitates DeFi, meaning that if DeFi does well, so does Ethereum.NFTs: the most well-known application of EthereumNFTs or non-fungible tokens, grew nearly tenfold between 2018 and 2020, as can be seen in the market cap of NFTs worldwide. These digital blockchain assets can essentially function as a unique code connected to a digital file, allowing to distinguish the original file from any potential copies. This application is especially prominent in crypto art, although there are other applications: gaming, sports, and collectibles are other segments where NFT sales occur.

Bitcoin is edging closer to reaching its finite, maximum supply, pushing its price up and making it harder to mine. As a rule of thumb, the fewer coins available to the general audience, the higher the value of the cryptocurrency becomes. No more mining is possible when a cryptocurrency reaches its maximum supply. The market price then reflects supply and demand. Bitcoin has a set limit of 21 million coins, the last of which is to be mined around the year 2140 according to a 2017 forecast - with the assumption that the rate of Bitcoin mining halves every 4 years. Why are there so many differences in crypto supply? Cryptocurrency developers can determine whether a coin should have a fixed limit, depending on the blockchain it utilizes or monetary strategies. Ethereum has no maximum supply, meaning miners can create and indefinitely extract this cryptocurrency. This is called an inflationary cryptocurrency, one that continuously inflates the supply. The idea is that the number of tokens in circulation keeps outpacing demand, decreasing overall value. Some coins limit the release of their (indefinite) supply or even destroy (burn) tokens. Such deflationary events took place with LUNA in 2022. The appeal of low-supply cryptocurrency for investors Crypto investors tend to be on the lookout for crypto with limited supply, ideally with low levels. After a token reaches maximum supply, the argument goes, the coin's supply becomes static - miners can no longer create new coins. The demand should continue to grow. A maximum cap, they hope, guarantees value gains. Not many such coins exist. DeFi platform AAVE is an example of a cryptocurrency with a max supply smaller than *** million. Additionally, First Digital USD (FDUSD) currently has a supply of 1296.33 million, but it also has an unlimited supply.