Crypto Trading·Crypto Fundamentals
Bitcoin & Ethereum: The Two Giants
The First and the Second
Bitcoin (BTC) was launched in January 2009 by the anonymous Satoshi Nakamoto. It was the first cryptocurrency and remains the largest by market cap. Ethereum (ETH) launched in July 2015 and introduced a fundamentally new idea: programmable money. Together, BTC and ETH make up roughly 60-70% of the entire crypto market capitalization.
When Bitcoin hit $69,000 in November 2021, retail euphoria was at peak levels. The Crypto Fear & Greed Index read 84 (Extreme Greed). Within 12 months, Bitcoin had crashed to $15,500 — a 77% drawdown that wiped out billions in retail wealth. Understanding the fundamental differences between these two assets is essential to navigating the crypto market's extreme cycles.
BTC
Bitcoin · digital gold
Fixed 21M supply. Proof-of-work secured by global mining. Settlement layer first, slow and intentional. The market's reserve crypto-asset.
$1.3T market cap · 10-min blocks
ETH
Ethereum · programmable money
Smart-contract platform. Proof-of-stake since 2022. Hosts most DeFi, stablecoins, and NFTs. Supply slightly deflationary post-merge.
$420B market cap · 12-sec blocks
A
Bitcoin (BTC)
- Digital gold — a store of value
- Fixed supply: 21 million coins ever
- Slow and simple by design (~7 TPS)
- Proof-of-Work consensus (mining)
- No smart contracts (natively)
- Most widely held and recognized
- Approved for spot ETFs in January 2024
- Institutional adoption accelerating
B
Ethereum (ETH)
- Programmable blockchain — a global computer
- No hard supply cap (but deflationary post-Merge)
- Supports smart contracts & DeFi
- Proof-of-Stake since September 2022 (The Merge)
- Powers most NFT, DeFi, and DAO activity
- Higher transaction throughput than Bitcoin
- Layer 2 ecosystem (Arbitrum, Optimism, Base)
- EIP-1559 burns ETH with every transaction
Bitcoin's Supply Schedule and the Halving Cycle
Bitcoin has a hard cap of 21 million coins. New BTC is issued to miners as a reward, but this reward is cut in half every 210,000 blocks — roughly every 4 years. This event is called the 'halving.' As supply growth slows while demand increases, halvings have historically been associated with major bull markets. Approximately 19.6 million BTC have already been mined; the final Bitcoin will be mined around the year 2140.
Definition
Halving
Every ~4 years, the reward paid to Bitcoin miners is cut in half. This reduces the rate at which new BTC enters circulation, decreasing supply growth. The 2024 halving reduced the block reward from 6.25 BTC to 3.125 BTC. Historically, each halving has preceded a significant bull run within 12-18 months.
| Halving | Date | Block Reward Before | Block Reward After | BTC Price at Halving | BTC Price ~18 Months After |
|---|---|---|---|---|---|
| 1st | Nov 2012 | 50 BTC | 25 BTC | ~$12 | ~$1,000 (+8,200%) |
| 2nd | Jul 2016 | 25 BTC | 12.5 BTC | ~$650 | ~$2,500 (+285%) |
| 3rd | May 2020 | 12.5 BTC | 6.25 BTC | ~$8,800 | ~$60,000 (+580%) |
| 4th | Apr 2024 | 6.25 BTC | 3.125 BTC | ~$64,000 | Cycle in progress |
Correlation is not causation
While every halving has preceded a bull market, the sample size is only four events. Other macro factors (monetary policy, institutional adoption, ETF approvals) also played major roles. Never base an investment thesis on a single pattern with limited data points.
Smart Contracts: Ethereum's Secret Weapon
A smart contract is a self-executing program stored on the Ethereum blockchain. When pre-defined conditions are met, it automatically executes without any middleman. Think of it as a vending machine: insert the right inputs, get the output automatically — no cashier needed. Smart contracts are the building blocks for DeFi, NFTs, DAOs, and the entire Ethereum ecosystem.
Definition
Smart Contract
Code stored on a blockchain that executes automatically when conditions are met. Smart contracts power DeFi (decentralized finance), NFTs, DAOs, and most crypto applications beyond simple value transfer. Once deployed, they run exactly as programmed — no one can alter them.
Definition
DeFi (Decentralized Finance)
Financial services built on smart contracts instead of traditional banks. DeFi includes lending (Aave, Compound), trading (Uniswap, Curve), derivatives (dYdX), and yield farming. At its peak in November 2021, DeFi protocols held over $180 billion in Total Value Locked (TVL).
Definition
DAO (Decentralized Autonomous Organization)
An organization governed by smart contracts and token-holder votes rather than a CEO and board of directors. Token holders propose and vote on decisions. Examples include MakerDAO (governs the DAI stablecoin) and Uniswap governance.
The Ethereum Roadmap: Scaling for the Future
Ethereum's biggest challenge has always been scalability. During the 2021 NFT boom, gas fees regularly exceeded $100 per transaction, making the network unusable for small transactions. Ethereum's roadmap addresses this through Layer 2 rollups — separate chains that batch transactions and settle them on Ethereum's main chain at a fraction of the cost.
| Layer 2 | Type | Avg. Transaction Fee | TPS | Key Feature |
|---|---|---|---|---|
| Arbitrum | Optimistic Rollup | $0.01-0.10 | ~40,000 | Largest L2 by TVL |
| Optimism | Optimistic Rollup | $0.01-0.10 | ~2,000 | Superchain ecosystem |
| Base | Optimistic Rollup | $0.001-0.01 | ~2,000 | Coinbase-backed, consumer focus |
| zkSync | ZK Rollup | $0.05-0.20 | ~10,000 | Zero-knowledge proof security |
| Starknet | ZK Rollup | $0.01-0.05 | ~500,000+ | Cairo language, gaming focus |
Top Cryptocurrencies by Market Cap
| Rank | Asset | Symbol | Approx. Market Cap | Primary Use Case |
|---|---|---|---|---|
| 1 | Bitcoin | BTC | $1.2 Trillion+ | Store of value, digital gold |
| 2 | Ethereum | ETH | $350 Billion+ | Smart contracts, DeFi platform |
| 3 | Tether | USDT | $100 Billion+ | Stablecoin (pegged to USD) |
| 4 | BNB | BNB | $80 Billion+ | Binance ecosystem utility |
| 5 | Solana | SOL | $70 Billion+ | High-speed DeFi and NFTs |
| 6 | USDC | USDC | $30 Billion+ | Regulated stablecoin (Circle) |
| 7 | XRP | XRP | $30 Billion+ | Cross-border payments |
| 8 | Cardano | ADA | $15 Billion+ | Research-driven smart contracts |
Understanding Crypto Market Cycles
The crypto market moves in distinct cycles that are loosely tied to Bitcoin's halving schedule. Each cycle has followed a similar pattern: a bear market bottom, followed by accumulation, a halving event, a parabolic bull run, and then a dramatic crash. Understanding this cycle is the single most valuable macro framework for crypto investing.
| Phase | Typical Duration | Sentiment | Media Narrative | Smart Money Action |
|---|---|---|---|---|
| Bear Market Bottom | 2-4 months | Extreme Fear, capitulation | 'Crypto is dead', 'scam', 'ponzi' | Quietly accumulating at lowest prices |
| Accumulation | 6-12 months | Disbelief, skepticism | 'Dead cat bounce', 'another trap' | Building positions, not selling |
| Early Bull (Pre-halving) | 6-12 months | Hope, cautious optimism | 'Maybe crypto is back', coverage increases | Holding, deploying more capital |
| Post-Halving Rally | 12-18 months | Euphoria, greed | '$100K inevitable', 'new paradigm' | Beginning to take profits at cycle highs |
| Blow-Off Top | 1-3 months | Mania, extreme greed | '$1M BTC soon', mainstream FOMO | Selling to retail, exiting positions |
| Crash / Bear Market | 6-12 months | Denial, then despair | 'Told you so', 'never again' | Waiting patiently to re-accumulate |
Where are we in the cycle?
As a trader, your job is to identify where in this cycle we currently sit. The Fear & Greed Index, Bitcoin dominance, on-chain metrics (MVRV ratio), and price relative to the 200-week moving average are all tools for positioning yourself in the cycle. Markitel signals incorporate cycle awareness into their confidence scoring.
The Bitcoin Pizza and Early History
On May 22, 2010, a programmer named Laszlo Hanyecz paid 10,000 BTC for two Papa John's pizzas — the first real-world Bitcoin transaction. At the time, those 10,000 BTC were worth about $41. At Bitcoin's all-time high, they would have been worth nearly $700 million. This story is celebrated every year as 'Bitcoin Pizza Day' and illustrates both how far the technology has come and how difficult it is to predict exponential growth in its early stages.
The Bitcoin ETF revolution
On January 10, 2024, the SEC approved 11 spot Bitcoin ETFs simultaneously, including offerings from BlackRock (IBIT), Fidelity (FBTC), and Invesco. Within three months, these ETFs accumulated over $50 billion in assets. This was a watershed moment: for the first time, traditional investors could gain Bitcoin exposure through their regular brokerage accounts without touching crypto exchanges or wallets. The approval removed one of the largest barriers to institutional adoption.
Definition
ETF (Exchange-Traded Fund)
A fund that tracks the price of an asset (in this case, Bitcoin) and trades on traditional stock exchanges like the NYSE or Nasdaq. Spot Bitcoin ETFs actually hold real BTC. They allow pension funds, retirement accounts, and traditional investors to get exposure to Bitcoin without managing private keys or using crypto exchanges.
Start with the two giants
If you are new to crypto, focus on understanding Bitcoin and Ethereum before exploring altcoins. Together they represent the majority of the market. Most altcoin price action is derivative of BTC and ETH movements anyway — when Bitcoin sneezes, altcoins catch pneumonia.
Knowledge check
What is the maximum total supply of Bitcoin?
Knowledge check
What was the significance of Ethereum's 'Merge' in September 2022?