Crypto Market Cycles: Bitcoin Halving, Bull and Bear Markets Explained

Crypto markets follow predictable cycles. The biggest gains go to those who recognize the phase they're in — not those who react to headlines.

TL;DR

• Crypto runs in ~3–4 year cycles: bull market → bear market → repeat
• Bitcoin's halving (every ~4 years) reduces new BTC supply by 50% — historically triggering bull markets 12–18 months later
• Four phases: accumulation, uptrend, euphoria, crash
• Tools to identify phases: MA 200, RSI, Fear & Greed Index
• Capital rotation: BTC/ETH first → altcoins → memecoins as the cycle progresses

Crypto Runs in Cycles

Since Bitcoin's inception, the market has always followed the same pattern: bull market → bear market → bull market → bear market...

A full cycle typically lasts 3 to 4 years. And this cycle is directly tied to a mechanism built into Bitcoin's code: the halving.

Bull Market and Bear Market

Bull Market — 2020/2021 Example

Bitcoin was at $10,000 in October 2020. By April 2021, it hit $65,000. ETH went from $300 to $4,000.

During this period:

• Everyone made money easily
• 10x and 50x gains everywhere on social media
• Family members, coworkers — everyone wanted to "invest in crypto"
• Ridiculous projects (memecoins, monkey NFTs) were worth millions
• Total euphoria

That's a bull market. Almost everything rises — including bad projects.

Bear Market — 2022 Example

Bitcoin fell from $65,000 to $16,000. ETH from $4,000 to $900. Terra/Luna collapsed, FTX went bankrupt.

During this period:

• People who bought at the peak lost 70–80%
• Everyone said crypto was dead
• Media stopped covering it
• Fragile projects disappeared

That's a bear market. Painful — but also where the best opportunities are built.

The counterintuitive truth: the best time to buy is when everyone says it's dead. The worst time is when everyone is euphoric.

"Be fearful when others are greedy, and greedy when others are fearful." — Warren Buffett

The Bitcoin Halving

Bitcoin has a rule written into its code: there will never be more than 21 million BTC.

To create new BTC, miners validate blocks and receive a block reward. Every 210,000 blocks (~4 years), this reward is cut in half. That's the halving.

A block ≠ a transaction. One block contains thousands of transactions. On Bitcoin, a block is validated approximately every 10 minutes. So 210,000 blocks × 10 minutes = approximately 4 years — the math, not an arbitrary decision.

| Date | Block Reward | |------|-------------| | 2009 | 50 BTC | | 2012 | 25 BTC | | 2016 | 12.5 BTC | | 2020 | 6.25 BTC | | 2024 | 3.125 BTC |

About 1 million BTC remain to be mined. The last will be mined around 2140.

Why the halving impacts the price: After each halving, the amount of new BTC created daily is cut in half. Less new supply → if demand stays the same → price rises. Historically, each halving has been followed by a bull market roughly 12–18 months later.

ETH — No Halving, But the Burn

ETH has no maximum supply and no halving. A fundamentally different design choice from Bitcoin.

Since EIP-1559 (2021), a portion of every gas fee is burned permanently.

• Very active network → more burned than created → ETH becomes deflationary
• Low activity → more created than burned → ETH is slightly inflationary

It's dynamic — it depends on network usage. Track it in real time at ultrasound.money.

Summary:

• BTC → fixed, predictable scarcity, halving every 4 years → digital gold
• ETH → dynamic scarcity, depends on network activity → digital oil

The 4 Phases of the Cycle

Recognizing these phases is what prevents you from buying at the wrong time.

Phase 1 — Accumulation

The bear market is over. Prices are low, nobody talks about crypto. Smart money (large investors, institutions) quietly buys. The general public is absent — they panic-sold or are afraid to return.

Signals:

• Price below the MA 200 for a long time
• RSI around 30–40, no more extreme panic
• Low trading volume — no one is interested
• Media silent on crypto
• Fear & Greed Index in "Extreme Fear" zone (0–25)

Phase 2 — Uptrend (Bull Market)

Prices start rising. Media picks up interest. The public gradually returns.

Signals:

• Price crosses back above the MA 200 → major signal
• Higher highs + higher lows on the daily chart
• Volume increasing progressively
• Fear & Greed Index rising toward "Greed" (25–75)

Phase 3 — Euphoria (Peak)

Everyone talks about it — cab drivers, family, coworkers. Prices are at the top. Smart money quietly sells while the general public buys. Random altcoins do x10 in days.

Signals:

• RSI at 80–90 on the daily for weeks
• Everyone around you is talking about crypto
• Absurd altcoins doing x10 in days
• Fear & Greed Index in "Extreme Greed" (75–100)
• Mainstream media covering crypto nonstop

Phase 4 — Distribution / Crash

Prices collapse. General panic. The public sells at a loss. Back to Phase 1.

The painful lesson: most people buy in Phase 3 and sell in Phase 4. That's the opposite of what works.

The Fear & Greed Index

A free tool that measures market sentiment from 0 (extreme fear) to 100 (extreme greed).

alternative.me/crypto/fear-and-greed-index

| Score | Zone | Likely Phase | |-------|------|-------------| | 0–25 | Extreme Fear | Accumulation / end of bear | | 25–50 | Fear | Early uptrend | | 50–75 | Greed | Mid bull market | | 75–100 | Extreme Greed | Euphoria / peak |

Practical rule: buy in fear, sell in euphoria.

Capital Rotation — What to Buy and When

Crypto markets are highly correlated. BTC sets the tone: when it rises, altcoins generally follow. When it crashes, everything crashes.

Phase 1 (accumulation) → BTC and ETH only The most solid, most liquid, least risky. If the bull market doesn't arrive as expected, they survive. A small altcoin can go to zero while BTC holds.

Phase 2 (confirmed bull market) → solid altcoins SOL, established DeFi projects with TVL, known L2s. They often outperform BTC 2x or 3x. This is when you start looking at other coins — not before.

Phase 3 (euphoria) → memecoins and micro-caps They do x10, x50... but risk is at its maximum. People who enter in Phase 3 lose everything when it reverses.

The rule: the earlier in the cycle you take risk, the higher the potential. The later you wait, the riskier it is — even if it seems "obvious."

What you put in small altcoins: consider it potentially lost. Never more than you can afford to lose.