In the world of cryptocurrency, Bitcoin is special because of its fixed supply cap. This means there will only ever be 21 million coins. This is different from traditional money and most other digital currencies.
The fixed supply cap of Bitcoin has big effects on its value, how rare it is, and its economic role. It’s not just a technical detail.
Bitcoin’s scarcity makes each coin more valuable. This is because there’s only a limited amount available. It’s like a rare treasure that people want to own.
This desire for Bitcoin drives up its price. As more people want it, the price goes up. This makes Bitcoin even more valuable in the world of digital money.
Key Takeaways
- Bitcoin’s fixed supply cap of 21 million coins sets it apart from traditional fiat currencies and most other cryptocurrencies.
- Scarcity is a key factor that enhances the perceived value of each Bitcoin, making it a sought-after digital asset.
- The deflationary pressure created by Bitcoin’s limited supply leads to price appreciation as demand increases.
- Bitcoin’s fixed supply cap bolsters confidence in its long-term viability, as it is not subject to the devaluation issues of fiat currencies.
- The limited supply of Bitcoin makes it an attractive store of value, as it is not subject to inflationary pressures like traditional currencies.
Introduction to Bitcoin’s Fixed Supply Cap
Bitcoin, the first cryptocurrency, has a unique feature: a fixed supply cap. This means only 21 million bitcoins will ever exist. This scarcity helps keep the value of Bitcoin stable over time.
What is Bitcoin’s Fixed Supply Cap?
Bitcoin’s fixed supply cap is the maximum number of bitcoins that can be mined. Satoshi Nakamoto, Bitcoin’s creator, set this limit. It’s meant to control inflation and ensure Bitcoin’s long-term success.
Why is Bitcoin’s Supply Limited to 21 Million Coins?
Nakamoto chose 21 million as the limit to mimic gold’s scarcity. This makes Bitcoin valuable, as it can’t be diluted by creating more coins. The fixed supply also keeps Bitcoin decentralized, preventing one person from controlling new coins.
- Bitcoin’s fixed supply cap was designed to create scarcity and maintain the digital asset’s value over time.
- The 21 million coin limit was chosen to make Bitcoin a store of value, similar to precious metals like gold.
- The fixed supply helps preserve Bitcoin’s decentralized nature by preventing any single entity from controlling the issuance of new bitcoins.
“Bitcoin’s fixed supply cap is a crucial aspect of its design, creating scarcity and maintaining the digital asset’s value as a store of value.”
The Significance of Bitcoin’s Fixed Supply Cap
Bitcoin’s limited supply is a big reason for its value. It has a maximum of 21 million coins. Each coin can be divided into eight parts, called satoshis. This limited supply makes Bitcoin more valuable over time.
Scarcity and Value
New bitcoins are made at a slower rate, thanks to the halving process. This makes Bitcoin more valuable as demand goes up. People see Bitcoin as a safe place to keep their money, especially when the economy is shaky.
Bitcoin can be used for small purchases because it can be divided. This makes it useful for everyday spending, even with its limited supply.
Deflationary Nature of Bitcoin
Bitcoin’s supply is fixed, unlike traditional money that can be printed more. This makes Bitcoin appealing to those who want to protect their money from inflation. To handle more transactions, new solutions have been found without changing Bitcoin’s supply.
By December 18, 2023, 19,573,975 bitcoins were in existence. Only 1,426,025 more are needed to reach the 21 million cap. It’s thought that up to 20% of all bitcoins might be lost forever. With more halvings planned, the last bitcoin is expected to be mined by 2140.
“Bitcoin’s fixed supply cap is a key factor that contributes to its scarcity and value, driving its appreciation over time.”
Bitcoin’s Issuance Schedule
The Bitcoin network has a halving event every four years. This event cuts the block reward for mining new bitcoins by 50%. It keeps happening until all bitcoins are mined, expected by 2140.
Because of this, Bitcoin’s inflation rate has been going down. It started at 50 bitcoins per block and now it’s 6.25 bitcoins per block.
The Halving Process
The Bitcoin halving is a planned event that lowers the reward for miners. Miners verify transactions and add new blocks to the blockchain. This event is key to keeping Bitcoin’s cryptocurrency tokenomics and crypto asset valuation strong.
It directly affects the bitcoin supply schedule and bitcoin inflation rate.
Bitcoin’s Diminishing Inflation Rate
Thanks to the halving, Bitcoin’s inflation rate has been dropping. The current inflation rate is about 1.8%. It’s expected to fall to 0.8% after the next halving.
This deflationary nature of Bitcoin is a big part of its cryptocurrency tokenomics. It also adds to its value as a crypto asset.
| Event | Block Reward | Inflation Rate |
|---|---|---|
| Initial Bitcoin Release | 50 BTC | ~50% |
| 2012 Halving | 25 BTC | ~25% |
| 2016 Halving | 12.5 BTC | ~12% |
| 2020 Halving | 6.25 BTC | ~1.8% |
| 2024 Halving (Estimated) | 3.125 BTC | ~0.8% |
“The halving reduces the sell-side pressure in the Bitcoin market by halving the issuance rate.”
What is the significance of Bitcoin’s fixed supply cap?
Bitcoin’s fixed supply cap of 21 million coins is key to its value. It makes Bitcoin scarce and valuable over time. This limited supply, along with the halving process, makes Bitcoin a unique digital asset. It’s attractive to investors looking to protect against inflation.
As there are only 21 million Bitcoins, its value could rise. The halving events, happening every four years, cut the block reward in half. This slows down the introduction of new Bitcoins into the market. This slow increase in value makes Bitcoin stand out in the crypto world.
From an economic view, Bitcoin’s fixed supply and deflationary nature are big deals. They help Bitcoin’s role in decentralized finance (DeFi) grow. Its predictable and limited issuance adds stability to the digital asset market. This makes it appealing to both institutions and individuals.
Also, Bitcoin’s scarcity boosts its value as a store of wealth, like gold. Investors see it as a safe haven against inflation and economic uncertainty. This drives up demand and price over time.
In short, Bitcoin’s fixed supply cap is crucial. It drives scarcity, appreciation, and stability in the crypto market. This makes Bitcoin a unique and compelling asset for investors and users in DeFi.
Bitcoin’s Current Circulating Supply
As of December 18, 2023, there were 19,573,975 bitcoins in circulation. This leaves about 1,426,025 bitcoins left to be mined. The total supply of 21 million bitcoins is almost fully distributed.
Bitcoin’s limited and predictable supply is key to its value. The code ensures the last few bitcoins will be mined slowly. This makes Bitcoin scarce and valuable.
The bitcoin circulating supply and cryptocurrency supply are vital. They help us understand bitcoin scarcity and digital asset economics. This is within the decentralized finance world.
The Bitcoin network is growing, but new bitcoins are introduced slowly. This is due to “halving,” where miners’ rewards are cut in half every four years. This keeps the bitcoin circulating supply low, maintaining its deflationary nature.
Bitcoin’s limited supply, along with its digital asset economics and decentralized finance features, make it unique. It attracts both individual and institutional investors.
The Bitcoin Mining Process
At the heart of the Bitcoin network is a key process called bitcoin mining. This process checks transactions and adds new blocks to the blockchain. The blockchain is a decentralized ledger that keeps track of all Bitcoin transactions. Miners compete to solve complex math problems to add a new block.
Proof-of-Work Consensus Mechanism
The Proof-of-Work (PoW) consensus mechanism keeps the Bitcoin network safe and honest. Miners use powerful computers to solve these math problems. The first miner to solve it gets new bitcoins as a reward.
This process not only checks transactions but also keeps the network decentralized. No single entity can control the creation of new bitcoins.
Mining Rewards and Transaction Fees
Miners get rewards in two ways: bitcoin mining rewards and transaction fees. The block reward, or new bitcoins, decreases by 50% every four years. This is called the halving. It helps keep the number of bitcoins scarce.
Miners also earn from transaction fees. These fees come from users who send bitcoins. As the block reward goes down, transaction fees become more important for miners’ income.
“The Bitcoin network’s Proof-of-Work consensus mechanism ensures the security and integrity of the blockchain, while the mining rewards and transaction fees incentivize miners to maintain the network.”
Bitcoin’s Maximum Supply
The Bitcoin network has a fixed maximum supply of 21 million coins. This is different from traditional currencies and many other cryptocurrencies. The bitcoin maximum supply ensures a limited and predictable amount of coins.
The 21 Million Cap
The 21 million bitcoin total supply cap is set in the Bitcoin protocol. It’s not expected to be broken. But, the actual number of coins might be less due to a coding issue.
The code uses bit-shift operators, which round down the reward. This means there’s slightly less bitcoin scarcity than the theoretical maximum.
Experts say about 0.3125 bitcoins will be mined per minute until 2140. This slow and steady pace helps keep Bitcoin scarce and valuable.
| Year | Projected Bitcoins Mined | Total Bitcoins in Circulation |
|---|---|---|
| 2024 | 327,000 | 19,327,000 |
| 2028 | 219,000 | 19,546,000 |
| 2032 | 146,000 | 19,692,000 |
| 2036 | 97,000 | 19,789,000 |
| 2040 | 65,000 | 19,854,000 |
The chart shows the short-term issuance of bitcoins. It highlights the block rewards and the increase in total bitcoins up to certain years. This data gives insights into the decrease in bitcoin maximum supply generation.
Will Bitcoin’s Supply Ever Reach 21 Million?
Bitcoin, the most popular cryptocurrency, has a fixed supply cap of 21 million coins. This cap makes Bitcoin scarce and valuable. But, will Bitcoin’s supply ever hit that 21 million limit?
The answer is probably no. The Bitcoin network uses bit-shift operators. This means block rewards are rounded down in fractions of satoshis. Every four years, the block reward is halved, leading to a slight shortage in the total number of Bitcoins.
Here’s why Bitcoin’s supply is unlikely to reach 21 million coins:
- At block number 2,100,000, the block reward is 4,882,812.5 satoshis, which gets rounded down to 4,882,812 satoshis during a halving event.
- This rounding down of the block reward, repeated with each subsequent halving, means the total number of Bitcoins issued will fall short of the 21 million mark.
- Estimates suggest the final Bitcoin may be mined around the year 2140, but the total supply is likely to top out at around 20.999 million coins.
So, while Bitcoin’s maximum supply is set at 21 million, the actual number of Bitcoins will be slightly less. This is because of the network’s rounding down of block rewards. This unique feature highlights Bitcoin’s true scarcity and its role as a deflationary asset in the digital economy.
“The scarcity of Bitcoin, with only 21 million coins ever to be produced, contributes to its volatility and pricing dynamics.”
What Happens After All 21 Million Bitcoin Are Mined?
As Bitcoin’s total supply nears 21 million, many wonder what happens next. The future of Bitcoin looks different after this milestone. It could change how we use and value it.
By 2140, no new bitcoins will be mined. Miners won’t get new coins for solving transactions. They’ll have to rely on transaction fees instead.
This change could lead to a few outcomes. Miners might compete more for fewer fees. This could make transaction fees higher. It might make Bitcoin less appealing for everyday use but more valuable as an investment.
| Metric | Value |
|---|---|
| Total Bitcoins to Be Mined | 21 million |
| Bitcoins Already Mined | 19,651,225 |
| Bitcoins Remaining to Be Mined | 1,348,775 |
| Mining Reward per Block | 6.25 BTC |
| Estimated Time to Mine Final Bitcoin | Around 2140 |
Bitcoin’s security might also be affected. Miners’ focus shifts from earning new coins to transaction fees. This could make the network more vulnerable to attacks.
Yet, Bitcoin’s future could still be promising. As more people use it, demand for transactions might increase. This could help Bitcoin overcome the loss of new coin issuance. The shift to transaction fees will be a key test for Bitcoin’s survival and growth.
Bitcoin’s Inelastic Supply
Bitcoin has a fixed supply of 21 million coins. This means its supply can’t grow or shrink with demand. As more people want Bitcoin, the price goes up because the supply stays the same.
Implications for Bitcoin’s Value
Bitcoin’s price must go up when demand increases because its supply is fixed. This can make the price go up a lot over time. More people wanting Bitcoin makes it more valuable.
Studies show Bitcoin’s price is linked to things like how fast it’s used and the number of users. Its scarcity, due to a limited number of coins, is key to its value. Unlike fiat currencies, Bitcoin’s fixed supply helps it avoid inflation.
| Attribute | Bitcoin | Fiat Currencies |
|---|---|---|
| Supply | Capped at 21 million BTC | Unlimited and can be expanded by central banks |
| Issuance | Halved every four years | Fluctuates based on monetary policies |
| Scarcity | High, due to fixed supply | Low, with potential for infinite supply |
| Inflation | Deflationary, as new BTC are added at a decreasing rate | Potentially inflationary, based on central bank policies |
The fixed supply of bitcoin helps balance state power over money. It also makes bitcoin prices more volatile. Changes in demand have a big impact on its value.
In conclusion, Bitcoin’s fixed supply is key to its value and role in the economy. Its inelastic supply makes it a unique investment. It can fight inflation in a world of growing fiat currencies.
Institutional Investment and Bitcoin’s Supply Cap
Institutional investors see Bitcoin’s scarcity as a big reason to invest. They think it’s a good way to protect against inflation. The fixed supply of 21 million bitcoins is key to Bitcoin’s value and appeal.
If Bitcoin were to lose its deflationary nature, it could affect investment decisions. This could also change how people see Bitcoin’s worth.
Bitcoin’s limited supply attracts institutional investors looking for something rare. By January 2024, 130 countries, including the U.S., were exploring their own digital currencies. This shows how important Bitcoin’s fixed supply is.
| Metric | Value |
|---|---|
| Bitcoin’s market capitalization | Peaked at more than $1 trillion |
| Estimated U.S. adults who have invested in, traded, or used cryptocurrency | 17% as of mid-2023 |
| People in El Salvador who had used bitcoin for legal tender purposes in 2023 | Less than 15% according to a poll |
| Bitcoins already in circulation | Approximately 19.6 million |
| Bitcoin’s total supply cap | 21 million coins |
Bitcoin’s limited supply and ongoing investment show its scarcity’s importance. As the market grows, Bitcoin’s fixed supply will likely keep attracting investors.
The Deflationary Aspect of Bitcoin
Bitcoin doesn’t have a burn mechanism like Ethereum’s. But, lost bitcoins due to mistakes can make it deflationary. About 1.8 million bitcoins are lost, making the total supply around 19.2 million. This “burn” adds to Bitcoin’s bitcoin deflationary and cryptocurrency scarcity.
Lost Bitcoin and its Impact on Supply
The lost bitcoin issue affects Bitcoin’s bitcoin supply a lot. More lost bitcoins mean less in circulation. This could make the value of the remaining bitcoins go up.
This deflationary pressure has both good and bad sides. It encourages saving over spending. But, it might also slow down the economy.
- It is estimated that around 1.8 million bitcoins have been permanently lost, reducing the effective maximum supply to around 19.2 million bitcoins.
- The loss of bitcoins due to factors like forgotten passwords, lost hardware wallets, and other human errors can create a deflationary effect on the cryptocurrency.
- As the actual circulating supply of bitcoins decreases over time, the bitcoin deflationary nature of the currency becomes more pronounced, potentially driving up the value of the remaining bitcoins.
The deflationary side of Bitcoin is complex. It encourages saving but might slow down spending. Yet, Bitcoin’s bitcoin deflationary and cryptocurrency scarcity are key to its value as a digital asset.
Bitcoin’s Supply Cap vs. Other Cryptocurrencies
Bitcoin has a fixed supply of 21 million coins. But, many other cryptocurrencies don’t have a set limit or have much more coins available. This difference affects how scarce, valuable, and attractive these digital assets are compared to Bitcoin.
Bitcoin’s limited supply is a big reason for its deflationary nature and potential for value increase. As more people use Bitcoin, the limited number of coins can make it scarcer and more expensive. On the other hand, cryptocurrencies with no or high supply limits might not see the same price growth.
| Cryptocurrency | Maximum Supply | Market Cap (USD) |
|---|---|---|
| Bitcoin (BTC) | 21 million | $1.28 trillion |
| Ethereum (ETH) | Unlimited | $317 billion |
| Tether (USDT) | Unlimited | $119 billion |
| Binance Coin (BNB) | 200 million | $87 billion |
| Solana (SOL) | Unlimited | $73 billion |
| USD Coin (USDC) | Unlimited | $36 billion |
| XRP (XRP) | 100 billion | $33 billion |
| Dogecoin (DOGE) | Unlimited | $16 billion |
The table shows how Bitcoin’s supply and market value differ from other big cryptocurrencies. Ethereum, Tether, Solana, and Dogecoin have much higher or no limits. This could change their scarcity and value over time.
When looking at digital assets, it’s key to understand their tokenomics and supply cap. This helps investors see how they compare to Bitcoin’s unique supply cap.
Conclusion
Bitcoin’s fixed supply of 21 million coins is key to its value. It makes Bitcoin scarce and deflationary. This unique aspect appeals to investors and users looking for a reliable store of value.
The way Bitcoin is issued and the halving process make it stand out. This is why Bitcoin is seen as a valuable digital asset. It’s a focus for its growth and adoption.
Bitcoin’s scarcity and deflationary nature attract traditional investors. They see it as a safe haven against market instability. As Bitcoin grows, its fixed supply will keep it distinct from other cryptocurrencies and traditional assets.
FAQ
What is Bitcoin’s fixed supply cap?
Bitcoin has a fixed supply cap of 21 million coins. This means there will only ever be 21 million bitcoins in existence.
Why is Bitcoin’s supply limited to 21 million coins?
Satoshi Nakamoto, Bitcoin’s creator, set the supply cap at 21 million. This was done to make Bitcoin scarce and deflationary.
How does Bitcoin’s scarcity contribute to its value?
Bitcoin’s limited supply makes it rare. This rarity can increase demand and value over time. As new coins are issued less often, Bitcoin’s price can rise.
What is the halving process, and how does it impact Bitcoin’s inflation rate?
Every four years, the Bitcoin network halves the block reward for mining. This continues until all 21 million coins are mined, around 2140. This process lowers Bitcoin’s inflation rate over time.
What is the significance of Bitcoin’s fixed supply cap?
Bitcoin’s fixed supply cap makes it scarce. This scarcity can drive up its value and demand. The halving process adds to Bitcoin’s deflationary nature, attracting investors looking to hedge against inflation.
How many bitcoins are currently in circulation?
As of December 18, 2023, 19,573,975 bitcoins are in circulation. About 1,426,025 bitcoins are left to be rewarded.
How does the Bitcoin mining process work, and how are miners rewarded?
Miners compete to verify transactions and add new blocks to the blockchain. They are rewarded with new bitcoins and transaction fees.
Will the total number of bitcoins ever reach 21 million?
The total supply of Bitcoin is capped at 21 million coins. However, due to the Bitcoin codebase, the actual number issued will not reach 21 million.
What happens after the maximum number of 21 million bitcoins is reached?
After reaching 21 million coins, no new bitcoins will be issued. Transactions will still be processed, but miners will likely only earn from transaction fees.
How does Bitcoin’s inelastic supply affect its value?
Bitcoin’s supply cannot change with demand. As demand grows, supply remains the same. This can significantly affect Bitcoin’s value, as price must adjust to demand changes.
How do institutional investors view Bitcoin’s supply cap?
Institutional investors see Bitcoin’s scarcity as a key investment factor. They view it as a hedge against inflation. The fixed supply cap is a key part of Bitcoin’s value.
How does the loss of bitcoins impact the cryptocurrency’s supply?
Lost bitcoins can create a deflationary effect. It’s estimated that about 1.8 million bitcoins are lost, reducing the effective supply to around 19.2 million.
How does Bitcoin’s supply cap compare to other cryptocurrencies?
Bitcoin has a fixed supply cap of 21 million coins. Other cryptocurrencies often have no cap or a much higher one. This affects their scarcity, value, and investment potential compared to Bitcoin.
Source Links
- How does Bitcoin’s limited supply impact its value? – https://www.linkedin.com/pulse/how-does-bitcoins-limited-supply-impact-its-value-sergey-ionnikov
- Why Can There Only Be 21 Million Bitcoins? Impact of Bitcoin’s Fixed Supply – https://originstamp.com/blog/why-can-there-only-be-21-million-bitcoins/
- What Determines Bitcoin’s Price? – https://www.investopedia.com/tech/what-determines-value-1-bitcoin/
- How Bitcoin Enforces Its Fixed Supply | Phil Geiger – https://www.tftc.io/how-bitcoin-enforces-its-fixed-supply/
- There Will Only Be 21 Million Bitcoin. This is Why. And How. – https://blink.sv/blog/there-will-only-be-21-million-bitcoin-this-is-why-and-how
- Understanding the Fixed Supply of Bitcoin: Implications for Value and Transactional Use – https://www.linkedin.com/pulse/understanding-fixed-supply-bitcoin-implications-value-transactional
- What Happens to Bitcoin After All 21 Million Are Mined? – https://www.investopedia.com/tech/what-happens-bitcoin-after-21-million-mined/
- How many bitcoins are there? Bitcoin supply explained | Learning (EN) – https://www.kvarnx.com/content/how-many-bitcoins-are-there-bitcoin-supply-explained
- Understanding the Bitcoin Halving – https://www.fidelitydigitalassets.com/research-and-insights/understanding-bitcoin-halving
- Bitcoin halving: What is it? And why does it matter? – https://www.ishares.com/us/insights/what-is-the-bitcoin-halving
- What determines the Bitcoin price? – https://www.bitpanda.com/academy/en/lessons/what-determines-the-bitcoin-price
- Understanding Bitcoin and Ethereum Supply – https://www.fidelitydigitalassets.com/research-and-insights/understanding-bitcoin-and-ethereum-supply
- Can Bitcoin’s Hard Cap of 21 Million Be Changed? | River Learn – Bitcoin Basics – https://river.com/learn/can-bitcoins-hard-cap-of-21-million-be-changed/
- Controlled supply – Bitcoin Wiki – https://en.bitcoin.it/wiki/Controlled_supply
- What is the Bitcoin Halving? How Bitcoin’s Supply is Limited – Decrypt – https://decrypt.co/resources/what-is-the-bitcoin-halving
- How Does Bitcoin’s Fixed Maximum Supply Work? | EDGE United States – https://www.edgemedianetwork.com/story/332374
- Bitcoin: The Brutal Truths Revealed – https://www.brookings.edu/articles/the-brutal-truth-about-bitcoin/
- The Power of Bitcoin Scarcity & What It Means for Investors | BM Pro – https://www.bitcoinmagazinepro.com/blog/the-power-of-bitcoin-scarcity-what-it-means-for-investors/
- What Happens After All Bitcoin Are Mined? | River Learn – Bitcoin Mining – https://river.com/learn/what-will-happen-after-all-bitcoin-mined/
- 21 Million Mined: The Next Chapter for Bitcoin – https://asicmarketplace.com/blog/what-happens-after-all-bitcoins-are-mined/?srsltid=AfmBOormQ3HEwQJ162POKehtLhJjlvV-zkX_MBp0yBd815qrnBltBxQE
- Is bitcoin a speculative bubble? – https://medium.com/@bughinjacquesrenejean/is-bitcoin-a-speculative-bubble-4cc623a9f5bf
- How Is the Bitcoin Price Determined? | River Learn – Bitcoin Markets – https://river.com/learn/how-is-the-bitcoin-price-determined/
- Bitcoin in the economics and finance literature: a survey – https://pmc.ncbi.nlm.nih.gov/articles/PMC8174543/
- Cryptocurrencies, Digital Dollars, and the Future of Money – https://www.cfr.org/backgrounder/crypto-question-bitcoin-digital-dollars-and-future-money
- Why is Bitcoin Volatile? An Overview of Bitcoin Price Fluctuations | VanEck – https://www.vaneck.com/us/en/blogs/digital-assets/bitcoin-volatility/
- Bitcoin could potentially become the 21st century gold – https://www.db.com/what-next/digital-disruption/dossier-payments/i-could-potentially-see-bitcoin-to-become-the-21st-century-gold
- Comprehensive Guide to Bitcoin’s Deflationary Nature and Its Multifaceted Benefits – D-Central – https://d-central.tech/comprehensive-guide-to-bitcoins-deflationary-nature-and-its-multifaceted-benefits/
- Bitcoin’s Capped Supply: A Double-Edged Sword – https://www.linkedin.com/pulse/bitcoins-capped-supply-double-edged-sword-andré-costa
- What Is Bitcoin? – https://www.coindesk.com/learn/what-is-bitcoin/
- 12 Most Popular Types Of Cryptocurrency | Bankrate – https://www.bankrate.com/investing/types-of-cryptocurrency/
- The Investment Case for Bitcoin | VanEck – https://www.vaneck.com/blogs/digital-assets/the-investment-case-for-bitcoin/
- Don’t Fear the Reaper – https://medium.com/@nic__carter/dont-fear-the-reaper-8bbb42358efb
- The Bitcoin Halving explained – https://www.ey.com/en_ch/blockchain/the-bitcoin-halving-explained