bitcoin

Lỗ hổng Bitcoin cũ (2010) từng tạo ra 184,4 tỷ BTC “từ hư không” – vượt xa giới hạn 21 triệu, tuy nhiên Satoshi fix chỉ trong 5 giờ, fork chain xóa sạch, mạng vẫn an toàn đến nay.

Nhưng sự cố Bithumb mới đây làm dấy lên nghi ngờ lớn:
🔶 Sàn nhầm gửi 620.000 BTC (~$44 tỷ) cho 695 user (mỗi người 2.000 BTC thay vì 2.000 won).
🔶 Dự trữ thực tế chỉ ~46.000 BTC → Gây flash crash BTC xuống $55k trên Bithumb.
🔶 Đã recover 99.7%, bù phần còn lại từ tài sản riêng – KHÔNG phải hack, chỉ lỗi nội bộ.

Đừng hoảng loạn vì:
🔶 Tổng cung Bitcoin vẫn cứng 21 triệu – verifiable on-chain, không inflate được.
🔶 Bithumb là lỗi custodial (sàn tự phát hành “phantom” BTC nội bộ), KHÔNG ảnh hưởng blockchain thật.
🔶 BTC bạn hold self-custody vẫn an toàn 100%.
Đây là FUD hay dấu hiệu rủi ro custodial?
#bitcoin #BTC #CryptoNews #BinanceSquare
DYOR | NFA

Every cycle, Bitcoin tells the same uncomfortable story.
Not with indicators. Not with narratives. But with attention.
Look at the chart. Every major Bitcoin cycle top has one strange thing in common:
Mainstream validation arrives at the peak.
2017: “Crypto’s Secret Billionaire Club”2021: Sam Bankman-Fried on Forbes2024–2025: The Bitcoin Alchemist institutional praise, legacy media approval
Each time, the timing is almost cruel. Price is already extended. Smart money is already distributing.

And only then does Bitcoin become acceptable to the masses. That’s the curse.
The weekly chart makes it clear:
Vertical expansion into the cycle highMedia hype peaks after price momentumVolatility compresses at the topThen structure breaks
This isn’t coincidence. It’s reflexivity.
Markets don’t top when fear is high.
They top when belief is universal.
When Bitcoin no longer needs to convince you that’s when it’s most dangerous.
Forbes covers Bitcoin when:
Risk feels goneVolatility feels “managed”Institutions feel “safe”
But safety in markets is an illusion created after the opportunity has passed. By the time legacy media blesses the trend:
Early buyers are exitingLate buyers are arrivingLiquidity is shifting hands
The curse isn’t bearish by default It’s a timing signal.
Not necessarily. The curse doesn’t mean the cycle is over forever. It means the easy phase is over.
After every cursed moment:
Bitcoin enters redistributionNarratives fractureTime, not price, does the damage
Only later when nobody cares again does the next real opportunity form.
Bitcoin doesn’t top on bad news. It tops on magazine covers.
And once again… The curse is still alive.
#BTC #bitcoin #MarketAnalysis $BTC

Bitcoin’s next big options gravity well sits on Mar. 27 (260327), and the reason is simple: this is where the market has parked a thick stack of conditional bets that will need to be unwound, rolled forward, or paid out as the clock runs down.
The Mar. 27 expiry carries about $8.65B in notional OI and flags $90,000 as max pain, a rough reference point for where, in aggregate, option holders would feel the most pain at settlement.
The broader options complex is enormous, with total BTC options open interest around $31.99B across exchanges, led by Deribit at roughly $25.56B, with the rest split across Binance.

That concentration can shape how price behaves on the way there, particularly when liquidity thins and hedging flows start to matter more than anyone wants to admit.
Options can often sound like some kind of private language of institutional traders, which is convenient right up until they start influencing spot price. Our goal here is to translate a crowded derivatives calendar into something legible: where the bets are concentrated, how that concentration can change behavior in spot markets, and why March 27 stands out.
March 27 and the shape of the bets
On Mar. 27 (260327), data shows more calls than puts, roughly 69.85K calls versus 53.25K puts, with puts carrying far more market value than calls in that moment.

That combination might look strange and even contradictory, until you translate it into everyday incentives.
Calls can be plentiful because they offer defined-risk upside exposure that feels emotionally painless to hold, while puts can be more expensive because downside protection is often bought closer to where it actually hurts, and it tends to get repriced more aggressively when the market is nervous.
The volume data adds a second clue about what was happening at the margin. For the same Mar. 27 expiry, CoinGlass data shows puts around 17.98K versus calls around 10.46K in trading volume, again with puts carrying the heavier market value.

That tells us the flow that day leans more toward paying for protection than chasing upside, even while the outstanding inventory still looks call-heavy on count.
Now place that against spot and the broader pile.
March can feel far away in calendar terms, especially when the market is this volatile, but in options terms, it's close enough to exert gravity once nearer expiries finish shuffling positions forward.
When one date holds several billion in notional, it becomes a focal point for rolling, hedging, and all of the other quiet mechanical work market makers do to stay roughly neutral as customers buy and sell convexity. While this doesn't guarantee a particular price, it does increase the odds of price behaving as if there are invisible grooves in the road, because in a derivatives-heavy market, hedging flows can add friction in some ranges and remove it in others.
That brings us to max pain. It's a bookkeeping-style calculation across strikes, not a law of nature and not a trading signal with a motor attached.
It can be a useful reference in the way a median can be useful, as a single marker that tells you something about the distribution, but it's blunt, and blunt tools are almost never the ones moving price.
What tends to matter more is where positions are crowded by strike, because crowding changes how much hedging needs to happen when spot moves. CoinGlass data shows a put/call ratio around 0.44, one more hint that the distribution is lopsided rather than smooth, and lopsided is the whole point because it's how a date stops being a calendar fact and becomes a market event.
There's a simple, non-trader way to hold all of this without turning it into fortune-telling.
As March approaches, crowded strikes can behave like zones where price movement feels oddly damped, then oddly jumpy, because the hedging response is not steady.
If Bitcoin wanders into a heavily populated region, the market’s automatic risk management can reinforce a range, and if Bitcoin moves hard enough to escape it, those same mechanics can flip into something that amplifies momentum instead of resisting it.
What's gamma doing while everyone argues about max pain
If options talk has a single word that scares off otherwise capable people, it's gamma, which is unfortunate because the idea is straightforward when you keep it tied to consequences rather than algebra.
Options have deltas, meaning their value changes with price, and gamma describes how quickly that sensitivity changes as price moves.
Dealers who sit on the other side of customer trades often hedge to reduce directional risk, and the practical version is that hedging can turn them into automatic buyers on dips and sellers on rallies near crowded strikes. This is one of the clearest explanations for why price can look magnetized to certain regions.
The reason this matters for a large expiry like Mar. 27 is that hedging intensity isn't constant through time.
As expiry approaches, near-the-money options tend to become more sensitive, and that can make hedging adjustments more frequent and more meaningful in size. That's where the idea of pinning comes from, the observation that price can spend suspiciously long periods hovering near certain strikes as hedgers lean against small moves.
It's often just a risk-control habit showing up in the tape, and it becomes easier to notice when open interest is large and concentrated.
CryptoSlate has covered similar episodes as the options market has matured, emphasizing that expiry effects are most visible when positioning is heavy and clustered, also noting that the calm can disappear after settlement as hedging pressure resets and new positions get rebuilt.
More traditional market reporting often treats max pain as a reference point while focusing attention on how expiry, positioning, and volatility interact.
The key is that the mechanism itself isn't mystical. A large options stack creates a second layer of trading activity that reacts to spot moves, and sometimes that reactive layer is large enough to be felt by everyone, including people who never touch derivatives.
Options greeks charts, with their stepped shapes, are a visual reminder that sensitivity changes in regimes rather than smoothly. They suggest exposure is concentrated around specific strike regions, so the hedging response can change character as spot crosses those zones.
That's why a single headline number like max pain is usually less informative than a sense of where open interest is thickest, because the thick zones are where hedging flows are most likely to show up as real buying or selling, regardless of what the settlement meme says.
February reshuffles, June anchors, March decides
Mar. 27 is the main event in your snapshot, but the supporting beats matter because they help explain how the March setup can change before it arrives.
The same max pain view shows a meaningful late-February expiry, Feb. 27 (260227), at about $6.14B notional with max pain around $85,000.
It also shows notable size further out, including a high concentration at late June (Jun 26, 260626), which serves as a reminder that positioning is not only about the next few weeks, it is also about the market’s longer-dated posture.
February matters because it's close enough to force real decisions.
Traders who don't want positions to expire often roll them, and rolling isn't just a calendar action, it's a change in where exposure sits.
If February positions get rolled into March, the March pile grows heavier, and the gravity well can deepen. If February positions are closed or shifted to different strikes, March can look less crowded than it does today, and the options map will change in a way that has nothing to do with headlines and everything to do with inventory management.
Either way, February is a likely moment for hedges to be adjusted and for the strike distribution to be reshaped, which is why it deserves attention even in a March-focused story.
June matters for a different reason. Far-dated size tends to decay more slowly and can function like an anchor for risk limits, which can affect how aggressively desks manage near-dated risk in March.
The presence of meaningful longer-dated positioning suggests the market is warehousing views about where Bitcoin could be by early summer. That kind of positioning doesn't dictate day-to-day price, but it can influence the tone of the market around March, including how quickly hedges are rolled forward and how much risk dealers are willing to wear.
So the practical takeaway is that the headline numbers aren't the story on their own.
The $8.65B notional on Mar. 27 and the $90,000 max pain marker tell you there's a crowded event on the calendar, but the mechanism worth watching is where the crowd is standing by strike and how hedging pressure behaves as time shrinks.
The path to March runs through February, when positions can be reshuffled, and it stretches toward June, where longer-dated size can shape how the market carries risk.
None of this replaces macro, flows, or fundamentals, and it doesn't need to. It's a layer of explanation for why Bitcoin can look oddly well-behaved.
When the options stack is this large, you can often see the outlines of the next pressure point in advance, as long as you treat max pain as a rough signpost and focus instead on the crowding that can make price feel sticky in one moment and surprisingly slippery in the next.
#BTC #bitcoin #TrendingTopic
$BTC

Adam Back is one of the most important figures in Bitcoin’s history. Long before Bitcoin existed, he was already a cypherpunk, deeply involved in cryptography, privacy, and decentralized systems.

In 1997, Back invented Hashcash, a Proof-of-Work system designed to fight spam — which later became the core foundation of Bitcoin mining. When Satoshi Nakamoto published the Bitcoin Whitepaper in 2008, Hashcash was directly cited, and Satoshi even emailed Back before Bitcoin’s launch.

After Bitcoin went live in 2009, Adam Back played a major role in shaping Bitcoin’s philosophy and long-term direction. In 2014, he co-founded Blockstream, a company building Bitcoin infrastructure, sidechains, and the Liquid Network.

Between 2025 and 2026, Back has been involved in post-quantum security research, working to ensure Bitcoin remains secure against future technological threats.

Despite past controversies involving Blockstream, Adam Back is widely regarded as one of Bitcoin’s living pillars — a bridge between original cypherpunk ideals and the world’s largest decentralized financial network.

Adam Back didn’t just witness Bitcoin’s creation — he helped make it possible.
If you found this helpful, please leave a like and follow me for more content.
#HISTORY #bitcoin

Всем хайл! Смотрим на скрин и видим классическую картину: BTC в зоне принятия решения прямо у нижней полосы Боллинджера. Давайте разберем, что это значит и как не наступить на грабли.
Смотрим на факты (по скрину):

Цена: ~$70.6K, тестирует нижнюю полосу (DN: ~$70.3K).
Контекст: Средняя линия (MB) и верхняя полоса (UP) направлены ВВЕРХ → тренд на старших ТФ в целом восходящий.
RSI(6): 47.2 - нейтральная зона, нет сильной перепроданности.
Объем (Vol) ниже среднего (MA5, MA10) - крупные игроки пока не активны.
❓ Что это? Три сценария на выбор:
1. Боковик с отскоком. Цена нашла поддержку у нижней границы коридора в растущем тренде. Ждем разворотной свечи (пин-бар, молот, поглощение) для отскока к средней линии (~$70.85K) или выше.
2. "Прогулка" по нижней полосе. Если тренд ослабевает, цена может "прилипнуть" к нижней границе и поползти вдоль нее. Это сигнал к осторожности.
3. Пробой и сквиз вниз. Если свеча закроется ниже полосы на хорошем объеме - это сигнал к усилению продаж. Но! Смотрим на "рот" (расстояние между полосами). Он не сужен, значит, взрывной волатильности (сквиза) прямо сейчас нет.
⚠️ Главный урок с этого графика:
Касание полосы - НЕ СИГНАЛ, а КОНТЕКСТ. Самый частый слив депозитов здесь - купить только потому, что "цена упала до нижней Боллинджера".
✅ Где искать реальный сигнал (по этому скрину):

Подтверждение на младшем ТФ (5-15 мин): Ищем дивергенцию RSI или разворотный паттерн.
Сила свечи: Ждем явную зеленую свечу с телом больше предыдущих, которая отталкивается от этой зоны.
Объем: Рост объема на отскоке - наш лучший друг.
🚀 Ваш план действий (шаблон для любой монеты):
1. Определи тренд по наклону средней линии и полос (здесь - вверх).
2. Оцени сужение/расширение "рта" (здесь - норма, нет сжатия).
3. Ищи подтверждение от других инструментов (RSI, Volume, свечные модели).
4. Четко определи: Это отскок в боковике (цель - средняя линия) или попытка поймать тренд (цель - верхняя полоса)?
А теперь ваш ход, команда:
1. ❓ По вашему мнению, какой сценарий по этому скрину сработает? (Голосуем в комментах):
А) Отскок к $71K+
Б) Консолидация у нижней границы
В) Пробой вниз к $69K
2. ❓ Ваше жесткое правило: При касании Боллинджера вы всегда ждете дополнительного сигнала? Какого именно? (Например: "Жду закрытия свечи над/под полосой" или "Ищу дивергенцию RSI").
3. ❓ Покажи свой скрин! Есть монета, которая прямо сейчас у границы Боллинджера? Кинь скрин в комментарии со своим кратким разбором. Давайте разберем живые примеры!
4. ❓ Анти-пример: Был ли у вас случай, когда вы вошли только по касанию полосы и это привело к сливу? Что вы учли теперь?
Обсудим стратегии на реальном графике. Ваш опыт - наше общее преимущество!
Лайк 👍 этому посту, если считаете, что читать контекст индикатора важнее, чем слепо следовать его сигналам.
$BTC
#BTC #bitcoin #BOLL #rsi #trading

Không phải vấn đề là có hay không, mà là bạn có dám tin không.
Sự thật khó nghe:
90% những người đang hold Bitcoin không đủ niềm tin để nắm giữ đến mức giá 500k.
Họ sẽ bán ở:
20k – vì sợ sập.
50k – vì chốt non cho chắc.
100k – vì nghĩ đó là đỉnh.
Và rồi họ quay lại mua ở giá cao hơn.
Bitcoin chưa bao giờ tăng vì số đông tin tưởng.
Nó tăng vì số đông bán ra cho số ít hiểu chuyện.
Ai cũng nói:
Bitcoin là tương lai
nhưng lại run tay khi nó giảm 30%-50%.
Ai cũng hô:
HODL dài hạn
nhưng chỉ cần một cú dump là đổi sang stable ngay.
500.000 USD cho mỗi BTC sẽ không đến từ retail.
Nó đến từ:
– quỹ đầu tư, các tổ chức
– ngân hàng,
– quốc gia cần nơi trú ẩn tài sản.
Và khi đó, Bitcoin không còn dành cho số đông nữa.
Câu hỏi thật sự không phải:
BTC có lên 500k không?
Mà là:
khi nó đi từ 100k xuống 60k thậm chí 20k , bạn còn dám giữ không?
Giữ Bitcoin không khó.
Giữ niềm tin khi thị trường giảm mới khó.
Ai không đồng ý, cứ comment.
Mình tin đa số AE sẽ thích sự thật này.

#bitcoin #500kBTC #HardTruths

Kỳ vọng về một đợt cắt giảm lãi suất của Fed đang nóng trở lại.

Theo dữ liệu mới nhất từ Chicago Mercantile Exchange (CME) Group, xác suất trader dự đoán Fed hạ lãi suất trong cuộc họp FOMC tháng 3 đã tăng lên 23%, cao hơn gần 5% so với cuối tuần trước. Đáng chú ý, tất cả những người đặt cược vào kịch bản này đều nghiêng về mức giảm 25 điểm cơ bản (BPS) – chưa ai kỳ vọng một cú cắt mạnh tay 50 BPS.
Sự thay đổi này xuất hiện ngay sau khi Kevin Warsh – ứng viên được cựu Tổng thống Donald Trump đề cử cho vị trí Chủ tịch Fed – bước vào tâm điểm chú ý.
Chính cái tên Warsh đang khiến thị trường… vừa hy vọng, vừa lo ngại.
💥 Kevin Warsh – “Cơn gió ngược” với thanh khoản?

Warsh nổi tiếng với lập trường tiền tệ cứng rắn. Ông nhiều lần chỉ trích bảng cân đối kế toán của Fed đang “phình to quá mức cần thiết” hàng nghìn tỷ USD và ủng hộ việc thu hẹp thanh khoản.
Theo Nic Puckrin – nhà phân tích crypto:
“Việc Warsh được đề cử là một cú sốc với thị trường tài chính.”
Ông cho rằng đà lao dốc gần đây của kim loại quý phản ánh tâm lý lo ngại rằng nếu Warsh lên nắm quyền, Fed có thể siết chặt tiền tệ thay vì nới lỏng.
Lãi suất ảnh hưởng gì đến Crypto?

Trong thế giới crypto, thanh khoản là “nhiên liệu tên lửa”.
Lãi suất giảm → tiền rẻ hơn → dòng vốn đầu tư tăng → crypto dễ bứt phá
Lãi suất tăng/siết chặt → vốn khan hiếm → nhà đầu tư phòng thủ → giá chịu áp lực
Vì vậy, chỉ cần Fed phát tín hiệu nới lỏng, thị trường crypto thường phản ứng rất nhanh, thậm chí trước khi chính sách thực sự diễn ra.
Thomas Perfumo – Kinh tế trưởng toàn cầu tại Kraken – nhận định:
“Đề cử Warsh gửi đi một tín hiệu vĩ mô mang tính hai mặt: thanh khoản có thể ổn định, nhưng khó còn mở rộng mạnh như trước.”
Thị trường đang đứng giữa hai kịch bản
Nhà đầu tư đang bị kéo về hai hướng:

Một bên: 23% tin Fed sẽ hạ lãi suất → bullish cho crypto
Bên còn lại: Warsh có thể siết bảng cân đối kế toán → bearish cho thanh khoản
👉 Biến động mạnh có thể xảy ra trong vài tuần tới.
Kết luận
Cuộc họp FOMC tháng 3 giờ không chỉ là một quyết định lãi suất thông thường.
Nó có thể trở thành chất xúc tác lớn cho toàn bộ thị trường tài sản rủi ro, đặc biệt là crypto.
Nếu Fed nới lỏng → sóng tăng có thể quay lại.
Nếu Warsh thắng thế với chính sách thắt chặt → thị trường sẽ phải chuẩn bị cho giai đoạn “khô tiền”.
Dù kịch bản nào xảy ra, một điều chắc chắn:
Biến động lớn đang đến gần
#TRUMP #bitcoin #TrumpCrypto
$BTC $ETH $SOL

In February 2026, as #bitcoin reels from a brutal crash—plunging to $60,000 on February 5 before rebounding above $68,000—the age-old debate resurfaces: Are Bitcoin's famed four-year cycles still alive, or have they finally met their demise? For over a decade, these cycles have dictated the cryptocurrency's boom-and-bust patterns, tied inextricably to its halving events. Yet, with institutional adoption, ETFs, and maturing markets reshaping the landscape, analysts are split. Some declare the cycle "dead," evolved into a more sustained growth trajectory, while others see eerie similarities to past bears, suggesting the rhythm persists. This article delves into the mechanics of these cycles, their historical track record, and whether 2026 marks their evolution or extinction, drawing on recent data and expert insights.

What Are Bitcoin's Four-Year Cycles?
Bitcoin's four-year cycles refer to recurring patterns of price behavior, roughly aligning with its halving events every 210,000 blocks—or about four years. These cycles typically unfold in phases:
Accumulation: A period of sideways or gradual recovery post-bear market, where "smart money" buys in.Bull Run: Explosive price growth, often 1-2 years post-halving, driven by hype and FOMO.Peak and Correction: Overheating leads to a sharp crash, erasing 70-80%+ of gains.Bear Market and Readjustment: Prolonged consolidation, shaking out weak hands before the next halving.
A simple analogy: It's like a four-year heartbeat—starting slow after a "halving shock," accelerating into euphoria, then contracting in despair before recovering. Historically, this has repeated across cycles, with each bull peak dwarfing the last.

Why Do They Happen?
The cycles stem from Bitcoin's core design: a fixed supply of 21 million coins, with issuance halved periodically to mimic scarcity like gold.
Halving Mechanism: Every four years, miner rewards drop by 50% (e.g., from 6.25 $BTC in 2020 to 3.125 BTC in 2024), reducing new supply entering the market. This creates a "supply shock," theoretically driving prices up if demand holds steady.Market Psychology: Halvings act as psychological anchors, sparking speculation and media buzz. As prices rise, retail FOMO amplifies gains; fear then triggers sell-offs.Economic Parallels: Cycles mirror broader business cycles—expansion, peak, contraction, recovery—fueled by liquidity, adoption waves, and external factors like regulations or macro events.
Users note how halvings create "significant psychological events," defining trading narratives. Without halvings, Bitcoin's inflation would mimic fiat currencies; instead, it enforces deflationary pressure, theoretically boosting value over time.

Historical Evidence: A Track Record of Booms and Busts
Bitcoin's cycles have been remarkably consistent:

Data shows post-halving years often deliver massive gains (e.g., +300% in 2021), followed by corrections. However, drawdowns remain severe, with "Bitcoin is dead" narratives cycling predictably—477 times by some counts.
The Current Cycle in 2026: Signs of Life or Mutation?
Post-2024 halving, Bitcoin surged to $126,000 in 2025 but has since corrected 50%, aligning with cycle norms. Metrics like the Puell Multiple (around 1-2) suggest mid-cycle stability, not capitulation. Users debate a potential "relief bounce" before deeper lows, with some projecting peaks in mid-2026 or October. Fidelity's Jurrien Timmer notes a "lame 2026" if the cycle holds, with bears echoing 2018/2022 patterns.
Yet, deviations abound: Diminishing returns (post-halving +18% vs. historical +300%), ETF inflows buffering supply shocks, and correlations to macros (e.g., Fed policies, gold surges) suggest evolution.

Are the Cycles Dead? Arguments For and Against
Arguments for Death or Evolution:
Institutional Dominance: ETFs and corporates (e.g., MicroStrategy) create a "consistent bid," reducing volatility. Cycles may stretch to five years or become "supercycles." +2 K33 Research declares "the 4-year cycle is dead," citing structural changes like derivatives markets.Maturation: As Bitcoin behaves like gold (correlation ~0.85), halvings lose impact with only ~1.8% annual inflation left. Epoch Ventures predicts $150K by year-end, ending the cycle.
Arguments Against:
Persistence: 2026's 40-50% drawdown mirrors past corrections; Fidelity sees the cycle "intact." History "rhymes," per Mark Twain.Psychological Inertia: FUD cycles repeat—"Bitcoin is dead" headlines at every dip, regardless of price.On-Chain Support: Low metrics signal accumulation, with halvings still anchoring narratives. "The 4yr Bitcoin cycle is dead? Well... MAYBE it is... But it sure as hell hasn't been broken yet."
Conclusion: Evolving, Not Extinct
Bitcoin's four-year cycles, born from halvings and psychology, have shaped its history but face disruption in 2026. While institutional forces may lengthen or dampen them—potentially birthing supercycles—the current bear echoes past patterns, proving the cycle's resilience. The 4 Year Cycle Is DEAD!! What It Means For Crypto In 2026!!"—yet data whispers otherwise. Investors should monitor halvings as guides, not gospel, blending cycle awareness with macro vigilance. In crypto's maturing world, history rhymes, but the tune is changing.