
Crypto 101 is an educational series designed to make complex blockchain and decentralized infrastructure concepts accessible to everyone. Each edition explores a specific topic in depth, combining foundational knowledge with practical examples from the real world — and from the Nodle ecosystem.
In the last edition we mapped the big waves: bull and bear markets, cycles, and the emotional rollercoaster that comes with them. This time we go deeper into the most dramatic moments inside those waves. The crashes that nobody saw coming. The days when social media turned completely red and even seasoned participants questioned everything. In crypto, these moments have a name: black swan events.
Understanding them will not let you predict the next one. But it will help you recognize the patterns that precede them, stay calmer when one arrives, and appreciate why the ecosystem that exists today is far more resilient than the one that existed ten years ago.

The term was popularized by the author Nassim Nicholas Taleb to describe events that are rare, carry extreme impact, and are only rationalized in hindsight as if they "should have been predictable." In crypto, black swans typically come in a few recurring shapes: a trusted exchange turns out to be insolvent, an algorithmic financial product unravels catastrophically, a global macro shock hits all risk assets at once, or a major regulatory action lands without warning.
What makes these events so damaging is not just the initial price drop. It is the chain reaction they set off. When a key institution fails, it takes with it all the loans it extended, the counterparties that trusted it, and the confidence that held the broader market together. In markets where many players are using borrowed money, one big failure can force others into emergency selling, which pushes prices lower, which triggers more forced selling, and so on. This cascade is what turns a bad day into "blood in the streets."
To understand how trust collapses, you have to understand Mt. Gox. Founded in 2010, the platform grew from a card-trading website into the dominant global Bitcoin exchange. By early 2014 it was processing roughly 70% of all Bitcoin transactions worldwide. If you wanted to buy or sell Bitcoin in those years, chances are you did it on Mt. Gox.
Then, on February 7, 2014, the platform suddenly halted Bitcoin withdrawals. The official explanation was a technical issue. Weeks later, the exchange went completely dark and filed for bankruptcy, revealing that approximately 850,000 Bitcoin had disappeared — 750,000 belonging to customers and 100,000 belonging to the company itself. At prices at the time, the loss was estimated at around 473 million USD. Later investigations concluded that most or all of the missing coins had been stolen from the exchange's hot wallet over several years, likely beginning as far back as 2011.
The impact was immediate and severe. From February to the end of March 2014, the price of Bitcoin declined by 36%. But the longer-term damage was subtler: it took years for the industry to rebuild the basic trust that users needed to keep funds on an exchange. The lesson the ecosystem learned — painfully — was that the phrase "your keys, your coins" is not just a slogan. When you leave your assets on a centralized platform that you do not control, you are trusting that platform completely. Mt. Gox showed what happens when that trust is misplaced.
Six years later, a completely different type of shock struck. On March 12, 2020, global financial markets were in full panic mode as the COVID-19 pandemic spread worldwide and governments began declaring lockdowns. Stock markets crashed. Bond markets froze. Investors rushed to hold cash above all else.
Bitcoin was not spared. In a single 24-hour period, BTC dropped from around 9,100 USD to a low of approximately 3,800 USD — a fall of more than 57% in one week from the previous swing high. The broader crypto market lost over 50% of its total value, dropping from roughly 260 billion USD to 120 billion USD. Ethereum fell around 65%, and smaller altcoins lost up to 80%.
The most chaotic moment came when BitMEX, then one of the largest crypto derivatives exchanges, experienced mass liquidations. Approximately 750 million USD in leveraged positions were liquidated in minutes, after which the exchange briefly went offline for "maintenance." The combination of forced selling, illiquid order books, and panic capitulation turned what might have been a sharp correction into a historic collapse.
There were two important takeaways. First, when global investors panic, they sell everything — including Bitcoin — to raise cash. Crypto was not yet the safe haven many had hoped it would be. Second, and more encouragingly: within weeks, markets began recovering. Bitcoin returned to its pre-crash level by late April and went on to reach new all-time highs in the following months. For those who stayed calm and held, or even added positions during the darkest days, the recovery was eventually remarkable. That is still not a promise — but it is historical context worth knowing.
If the COVID crash was a macro shock from outside crypto, the Terra/UST collapse in May 2022 was a disaster built from within. Terra was a blockchain network whose algorithmic stablecoin, TerraUSD (UST), was supposed to maintain a stable 1 USD peg through a complex mechanism involving its paired token, LUNA.
The system worked as follows: if UST fell below 1 USD, users could burn UST and receive LUNA in return, reducing UST supply and theoretically pushing the price back up. If UST rose above 1 USD, users could burn LUNA to mint more UST. This balance was meant to be self-correcting. The fatal flaw was that during extreme selling pressure, the mechanism would mint enormous amounts of new LUNA to absorb UST, flooding the market with supply and crashing LUNA's own value — which then reduced the system's capacity to defend the peg, which caused more UST selling, which required more LUNA minting. Researchers describe this as a death spiral.
The collapse began on May 7, 2022, when two large wallets withdrew approximately 375 million UST from Anchor Protocol, a DeFi lending product that had been offering unusually high yields to UST depositors. The withdrawals triggered a loss of confidence that quickly became self-fulfilling. By May 9, UST had lost its peg for a second and final time. Within days, the Terra ecosystem lost over 40 billion USD in market value. LUNA, which had traded above 80 USD just weeks before, became essentially worthless.
The ripple effects went far beyond Terra itself. Three Arrows Capital (3AC), a major crypto hedge fund that had been borrowing billions to make leveraged bets, had significant exposure to the Terra ecosystem and other assets that were falling in tandem. On June 16, 2022, the Financial Times reported that 3AC had failed to meet its margin calls. By June 27, a court ordered the fund to liquidate. Its collapse left creditors facing claims of over 3.5 billion USD. The cascade continued: companies that had lent to 3AC — including Voyager Digital, Celsius, and others — were dragged into their own liquidity crises. Combined, the Terra collapse and the 3AC contagion triggered a 48% fall in total crypto market capitalization over May and June 2022.

By November 2022, the market was already in a deep bear phase. Then came the event that many described as the final shock of the year. FTX, at its peak valued at32 billion USDand considered one of the most reputable exchanges in the industry, imploded in the space of a week.
The trigger came on November 2, 2022, when CoinDesk published a report suggesting that Alameda Research — FTX's affiliated trading firm — held a balance sheet heavily dependent on FTT, FTX's own native exchange token, rather than independent assets. On November 6, Binance CEO Changpeng Zhao publicly announced that Binance would sell its entire FTT holding, worth at least 580 million USD. The announcement triggered a bank run. FTX experienced approximately 6 billion USD in withdrawal requests in the 72 hours that followed. Unable to meet demand, FTX froze withdrawals on November 8 and filed for bankruptcy days later. Bankruptcy proceedings later revealed an 8.9 billion USD shortfall, the result of customer funds being misappropriated and used for high-risk investments and personal expenditures. FTX founder Sam Bankman-Fried was found guilty of fraud and received a 25-year prison sentence.
The FTX collapse deepened and extended the 2022 bear market, but it also triggered lasting structural changes. Exchanges began publishing proof-of-reserves to demonstrate they held the assets they claimed. Demand for self-custody — keeping assets in your own wallet rather than on an exchange — surged globally. Regulators accelerated work on clearer oversight frameworks for crypto platforms. None of these improvements erase the harm done to those who lost funds, but they represent the ecosystem's direct response to the failure.
Looking across these events, a few patterns emerge that are worth knowing.
Every black swan started with a hidden fragility: Mt. Gox's stolen keys, Terra's algorithmic dependency, 3AC's invisible leverage, FTX's misused customer funds. None of these were visible to the public until the moment of failure. When the failure arrived, it exposed everyone who had trusted the failed institution with their capital or their collateral. Forced selling followed, prices fell, and the fallout spread to connected parties.
The second pattern is equally important: the ecosystem survived and improved each time. Security standards advanced after Mt. Gox. DeFi risk awareness grew after Terra. Self-custody adoption surged after FTX. Builders continued building through all of it, and each cycle left behind better infrastructure, more transparency, and a more informed community. "Blood in the streets" has, so far, always been a chapter — not the last page.
In the next edition of this mini-series, we zoom out even further to explore why these events happen more violently in crypto than in other markets. We look at the flow of capital between traditional finance and crypto, how interest rates and global politics shape when money pours in and when it rushes out, and what it means for the long-term story of decentralized infrastructure.
This content is for educational purposes only and does not constitute financial, investment, or legal advice. It is intended to help readers understand market concepts and historical events. It is not a recommendation to buy, sell, or hold any cryptocurrency. Always conduct your own research and consult with qualified professionals before making any financial decisions.
Glossary
Black swan event — A rare, unexpected shock with extreme consequences that most participants did not anticipate and that is only fully understood in hindsight. Examples in crypto include major exchange collapses, protocol failures, and sudden global market crashes.
Algorithmic stablecoin — A type of stablecoin that tries to maintain a stable price not through reserves of real assets, but through automated buying and selling mechanisms involving a paired token. The Terra/UST collapse illustrated how fragile these designs can be under extreme selling pressure.
Death spiral — A self-reinforcing collapse where a system's own corrective mechanism accelerates the decline rather than stopping it. In Terra's case, minting more LUNA to defend UST's peg caused LUNA's price to fall further, reducing the system's ability to defend the peg.
Liquidation — The automatic closing of a leveraged position when losses reach a defined threshold. In fast-moving markets, mass liquidations can create a feedback loop: falling prices trigger liquidations, which create more selling pressure, which causes further price drops.
Leverage — Borrowing funds to increase the size of a trade. A trader using 10x leverage controls 10 times more than their own capital. Gains are multiplied — but so are losses, and reaching a certain loss threshold means the position is automatically closed (liquidated).
Contagion — The spreading of a financial crisis from one institution or asset to others through connected exposure. When 3AC collapsed, its creditors were pulled into distress even though they had not made the same original mistakes.
Bank run — A situation where many customers simultaneously try to withdraw their funds from an institution because they fear it is becoming insolvent. The FTX collapse was triggered by exactly this: news caused a rush of withdrawal requests that FTX could not meet.

Crypto 101 is an educational series designed to make complex blockchain and decentralized infrastructure concepts accessible to everyone. Each edition explores a specific topic in depth, combining foundational knowledge with practical examples from the real world — and from the Nodle ecosystem.
In the last edition we mapped the big waves: bull and bear markets, cycles, and the emotional rollercoaster that comes with them. This time we go deeper into the most dramatic moments inside those waves. The crashes that nobody saw coming. The days when social media turned completely red and even seasoned participants questioned everything. In crypto, these moments have a name: black swan events.
Understanding them will not let you predict the next one. But it will help you recognize the patterns that precede them, stay calmer when one arrives, and appreciate why the ecosystem that exists today is far more resilient than the one that existed ten years ago.

The term was popularized by the author Nassim Nicholas Taleb to describe events that are rare, carry extreme impact, and are only rationalized in hindsight as if they "should have been predictable." In crypto, black swans typically come in a few recurring shapes: a trusted exchange turns out to be insolvent, an algorithmic financial product unravels catastrophically, a global macro shock hits all risk assets at once, or a major regulatory action lands without warning.
What makes these events so damaging is not just the initial price drop. It is the chain reaction they set off. When a key institution fails, it takes with it all the loans it extended, the counterparties that trusted it, and the confidence that held the broader market together. In markets where many players are using borrowed money, one big failure can force others into emergency selling, which pushes prices lower, which triggers more forced selling, and so on. This cascade is what turns a bad day into "blood in the streets."
To understand how trust collapses, you have to understand Mt. Gox. Founded in 2010, the platform grew from a card-trading website into the dominant global Bitcoin exchange. By early 2014 it was processing roughly 70% of all Bitcoin transactions worldwide. If you wanted to buy or sell Bitcoin in those years, chances are you did it on Mt. Gox.
Then, on February 7, 2014, the platform suddenly halted Bitcoin withdrawals. The official explanation was a technical issue. Weeks later, the exchange went completely dark and filed for bankruptcy, revealing that approximately 850,000 Bitcoin had disappeared — 750,000 belonging to customers and 100,000 belonging to the company itself. At prices at the time, the loss was estimated at around 473 million USD. Later investigations concluded that most or all of the missing coins had been stolen from the exchange's hot wallet over several years, likely beginning as far back as 2011.
The impact was immediate and severe. From February to the end of March 2014, the price of Bitcoin declined by 36%. But the longer-term damage was subtler: it took years for the industry to rebuild the basic trust that users needed to keep funds on an exchange. The lesson the ecosystem learned — painfully — was that the phrase "your keys, your coins" is not just a slogan. When you leave your assets on a centralized platform that you do not control, you are trusting that platform completely. Mt. Gox showed what happens when that trust is misplaced.
Six years later, a completely different type of shock struck. On March 12, 2020, global financial markets were in full panic mode as the COVID-19 pandemic spread worldwide and governments began declaring lockdowns. Stock markets crashed. Bond markets froze. Investors rushed to hold cash above all else.
Bitcoin was not spared. In a single 24-hour period, BTC dropped from around 9,100 USD to a low of approximately 3,800 USD — a fall of more than 57% in one week from the previous swing high. The broader crypto market lost over 50% of its total value, dropping from roughly 260 billion USD to 120 billion USD. Ethereum fell around 65%, and smaller altcoins lost up to 80%.
The most chaotic moment came when BitMEX, then one of the largest crypto derivatives exchanges, experienced mass liquidations. Approximately 750 million USD in leveraged positions were liquidated in minutes, after which the exchange briefly went offline for "maintenance." The combination of forced selling, illiquid order books, and panic capitulation turned what might have been a sharp correction into a historic collapse.
There were two important takeaways. First, when global investors panic, they sell everything — including Bitcoin — to raise cash. Crypto was not yet the safe haven many had hoped it would be. Second, and more encouragingly: within weeks, markets began recovering. Bitcoin returned to its pre-crash level by late April and went on to reach new all-time highs in the following months. For those who stayed calm and held, or even added positions during the darkest days, the recovery was eventually remarkable. That is still not a promise — but it is historical context worth knowing.
If the COVID crash was a macro shock from outside crypto, the Terra/UST collapse in May 2022 was a disaster built from within. Terra was a blockchain network whose algorithmic stablecoin, TerraUSD (UST), was supposed to maintain a stable 1 USD peg through a complex mechanism involving its paired token, LUNA.
The system worked as follows: if UST fell below 1 USD, users could burn UST and receive LUNA in return, reducing UST supply and theoretically pushing the price back up. If UST rose above 1 USD, users could burn LUNA to mint more UST. This balance was meant to be self-correcting. The fatal flaw was that during extreme selling pressure, the mechanism would mint enormous amounts of new LUNA to absorb UST, flooding the market with supply and crashing LUNA's own value — which then reduced the system's capacity to defend the peg, which caused more UST selling, which required more LUNA minting. Researchers describe this as a death spiral.
The collapse began on May 7, 2022, when two large wallets withdrew approximately 375 million UST from Anchor Protocol, a DeFi lending product that had been offering unusually high yields to UST depositors. The withdrawals triggered a loss of confidence that quickly became self-fulfilling. By May 9, UST had lost its peg for a second and final time. Within days, the Terra ecosystem lost over 40 billion USD in market value. LUNA, which had traded above 80 USD just weeks before, became essentially worthless.
The ripple effects went far beyond Terra itself. Three Arrows Capital (3AC), a major crypto hedge fund that had been borrowing billions to make leveraged bets, had significant exposure to the Terra ecosystem and other assets that were falling in tandem. On June 16, 2022, the Financial Times reported that 3AC had failed to meet its margin calls. By June 27, a court ordered the fund to liquidate. Its collapse left creditors facing claims of over 3.5 billion USD. The cascade continued: companies that had lent to 3AC — including Voyager Digital, Celsius, and others — were dragged into their own liquidity crises. Combined, the Terra collapse and the 3AC contagion triggered a 48% fall in total crypto market capitalization over May and June 2022.

By November 2022, the market was already in a deep bear phase. Then came the event that many described as the final shock of the year. FTX, at its peak valued at32 billion USDand considered one of the most reputable exchanges in the industry, imploded in the space of a week.
The trigger came on November 2, 2022, when CoinDesk published a report suggesting that Alameda Research — FTX's affiliated trading firm — held a balance sheet heavily dependent on FTT, FTX's own native exchange token, rather than independent assets. On November 6, Binance CEO Changpeng Zhao publicly announced that Binance would sell its entire FTT holding, worth at least 580 million USD. The announcement triggered a bank run. FTX experienced approximately 6 billion USD in withdrawal requests in the 72 hours that followed. Unable to meet demand, FTX froze withdrawals on November 8 and filed for bankruptcy days later. Bankruptcy proceedings later revealed an 8.9 billion USD shortfall, the result of customer funds being misappropriated and used for high-risk investments and personal expenditures. FTX founder Sam Bankman-Fried was found guilty of fraud and received a 25-year prison sentence.
The FTX collapse deepened and extended the 2022 bear market, but it also triggered lasting structural changes. Exchanges began publishing proof-of-reserves to demonstrate they held the assets they claimed. Demand for self-custody — keeping assets in your own wallet rather than on an exchange — surged globally. Regulators accelerated work on clearer oversight frameworks for crypto platforms. None of these improvements erase the harm done to those who lost funds, but they represent the ecosystem's direct response to the failure.
Looking across these events, a few patterns emerge that are worth knowing.
Every black swan started with a hidden fragility: Mt. Gox's stolen keys, Terra's algorithmic dependency, 3AC's invisible leverage, FTX's misused customer funds. None of these were visible to the public until the moment of failure. When the failure arrived, it exposed everyone who had trusted the failed institution with their capital or their collateral. Forced selling followed, prices fell, and the fallout spread to connected parties.
The second pattern is equally important: the ecosystem survived and improved each time. Security standards advanced after Mt. Gox. DeFi risk awareness grew after Terra. Self-custody adoption surged after FTX. Builders continued building through all of it, and each cycle left behind better infrastructure, more transparency, and a more informed community. "Blood in the streets" has, so far, always been a chapter — not the last page.
In the next edition of this mini-series, we zoom out even further to explore why these events happen more violently in crypto than in other markets. We look at the flow of capital between traditional finance and crypto, how interest rates and global politics shape when money pours in and when it rushes out, and what it means for the long-term story of decentralized infrastructure.
This content is for educational purposes only and does not constitute financial, investment, or legal advice. It is intended to help readers understand market concepts and historical events. It is not a recommendation to buy, sell, or hold any cryptocurrency. Always conduct your own research and consult with qualified professionals before making any financial decisions.
Glossary
Black swan event — A rare, unexpected shock with extreme consequences that most participants did not anticipate and that is only fully understood in hindsight. Examples in crypto include major exchange collapses, protocol failures, and sudden global market crashes.
Algorithmic stablecoin — A type of stablecoin that tries to maintain a stable price not through reserves of real assets, but through automated buying and selling mechanisms involving a paired token. The Terra/UST collapse illustrated how fragile these designs can be under extreme selling pressure.
Death spiral — A self-reinforcing collapse where a system's own corrective mechanism accelerates the decline rather than stopping it. In Terra's case, minting more LUNA to defend UST's peg caused LUNA's price to fall further, reducing the system's ability to defend the peg.
Liquidation — The automatic closing of a leveraged position when losses reach a defined threshold. In fast-moving markets, mass liquidations can create a feedback loop: falling prices trigger liquidations, which create more selling pressure, which causes further price drops.
Leverage — Borrowing funds to increase the size of a trade. A trader using 10x leverage controls 10 times more than their own capital. Gains are multiplied — but so are losses, and reaching a certain loss threshold means the position is automatically closed (liquidated).
Contagion — The spreading of a financial crisis from one institution or asset to others through connected exposure. When 3AC collapsed, its creditors were pulled into distress even though they had not made the same original mistakes.
Bank run — A situation where many customers simultaneously try to withdraw their funds from an institution because they fear it is becoming insolvent. The FTX collapse was triggered by exactly this: news caused a rush of withdrawal requests that FTX could not meet.
Proof of reserves — A method by which a crypto exchange or custodian publicly demonstrates that it holds the assets it claims to hold on behalf of users, typically verified through cryptographic evidence. This became a major industry demand after the FTX collapse.
Self-custody — Holding your own crypto assets in a wallet where only you control the private keys, rather than leaving them on an exchange. The phrase "not your keys, not your coins" summarizes the principle.
Hot wallet — A crypto wallet connected to the internet, used for active transactions. Hot wallets are more convenient but more vulnerable to hacking compared to cold storage. The Mt. Gox theft involved the exchange's hot wallet being compromised over several years.
Proof of reserves — A method by which a crypto exchange or custodian publicly demonstrates that it holds the assets it claims to hold on behalf of users, typically verified through cryptographic evidence. This became a major industry demand after the FTX collapse.
Self-custody — Holding your own crypto assets in a wallet where only you control the private keys, rather than leaving them on an exchange. The phrase "not your keys, not your coins" summarizes the principle.
Hot wallet — A crypto wallet connected to the internet, used for active transactions. Hot wallets are more convenient but more vulnerable to hacking compared to cold storage. The Mt. Gox theft involved the exchange's hot wallet being compromised over several years.

Nodle bids farewell to Polkadot
The final steps of the migration to ZKsync

Announcing the Creation of the Nodle DAO: A New Era of Inclusive Decentralized Governance
The Nodle Foundation is excited to announce the launch of the Nodle DAO (Decentralized Autonomous Organization), marking a major step toward decentralizing the Nodle Network and placing its future directly in the hands of its community. The creation of the Nodle DAO introduces a structured framework of Nodle Governance Proposals (NGPs), that anyone with a smartphone can vote on. These proposals will allow the community to have a say in the network’s development, ensuring that its direction re...

Nodle. Click. Agents.
Why decentralized messaging matters more than everIn today’s ever-shifting digital terrain, the struggle for uncensored, verifiable communication is at the heart of personal sovereignty. Nodle has been working on XMTP integration into their apps for months. In June, we released the public beta on iOS, allowing users to connect privately and without a middleman. This experience is now live on Android, enabling our global user base to benefit from private and encrypted chat. This launch of Nodl...

Nodle bids farewell to Polkadot
The final steps of the migration to ZKsync

Announcing the Creation of the Nodle DAO: A New Era of Inclusive Decentralized Governance
The Nodle Foundation is excited to announce the launch of the Nodle DAO (Decentralized Autonomous Organization), marking a major step toward decentralizing the Nodle Network and placing its future directly in the hands of its community. The creation of the Nodle DAO introduces a structured framework of Nodle Governance Proposals (NGPs), that anyone with a smartphone can vote on. These proposals will allow the community to have a say in the network’s development, ensuring that its direction re...

Nodle. Click. Agents.
Why decentralized messaging matters more than everIn today’s ever-shifting digital terrain, the struggle for uncensored, verifiable communication is at the heart of personal sovereignty. Nodle has been working on XMTP integration into their apps for months. In June, we released the public beta on iOS, allowing users to connect privately and without a middleman. This experience is now live on Android, enabling our global user base to benefit from private and encrypted chat. This launch of Nodl...
Nodle connects the world by using smartphones as nodes to create the Digital Trust Network. NODL | https://nodle.com
Nodle connects the world by using smartphones as nodes to create the Digital Trust Network. NODL | https://nodle.com
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