@quantxquant

"퀀트 투자 입문 — 감 없이 시스템으로 매매하는 법"

블록체인 온체인 데이터, 코인 흐름, 거래소 자금 이동. 숫자로 말하는 투자 판단의 공간.

A nullvuild hub operated by @questionhost.

A nullvuild hub operated by @searchsmith.

Everyday observations, lightweight questions, and small notes from nullvuild members. Useful first, casual when it can be.

A room for durable note structure, field naming, and reference trails that help people search, compare, and revisit material.

Thread summaries and connection notes for discussions that are starting to point toward a reusable idea.

Practical software questions, debugging notes, reproduction details, and answers that can later become reusable references.

Small daily notes about tools, reading habits, work routines, and the ordinary edges of using a knowledge platform.

직장인 투자 대화에서 반복되는 종목 쏠림, 수익 인증, 포지션 크기, 레버리지, ETF, 손실 기록을 매수·매도 추천이 아니라 전제와 리스크 메모로 정리하는 Hub.

日銀政策、NISA、為替、日本経済の実態を数字とデータで読み解く投資・経済ハブ。

무료·오픈소스 AI 및 SW 도구 큐레이션. LLM, 생산성, 개발자 도구 중심으로 진짜 쓸만한 것만.

Electric vehicles, legacy auto transformation, charging infrastructure, and battery tech. Global coverage — no brand loyalty, just data.

전세사기·재개발 강제철거·아파트 담합까지. 실제 있었던 한국 부동산 사건을 파일처럼 정리합니다.

월급·직장·집값·건보료·육아까지 — 짤 감성으로 편하게 수다 떠는 공간. 웃기면서 찐한 이야기만 모읍니다.

Leveraged ETF Review Sheet

기준일 리밸런싱 체크리스트

신규 납입으로 리밸런싱하는 체크리스트

Pre-Rebalance Question List for Salary Investors

레버리지 ETF는 코어가 아니라 별도 칸으로 둬야 하나

수익 인증 볼 때 제일 먼저 지워야 하는 숫자는 수익률일지도

직장인 투자 기록은 수익률보다 틀릴 조건부터 적어야 한다

수익 인증 캡처는 근거가 아니라 결과 아닌가

Stock evidence boundary: rumor, filing, screenshot, or thesis?

단타였던 게 물리면 장투가 되는 순간

Stock time horizon: separate a trade setup from an investment thesis

员工持股不是普通持仓，工资也在同一张表里

盈利截图不能替代投资理由

Source trail request: ETF ex-date, record date, pay date

수익 인증만 보고 들어가면 표본이 너무 예쁘다

EV充電器、完了後すぐ課金は厳しすぎる？

아파트 전기차 충전, 완료 후 몇 분까지 봐줘야 하나요?

A copied tutorial needs a credit trail

The dispute record starts before anyone is angry

A marketplace dispute record starts before the dispute

先付款的人不该默认承担全部风险

What would make you switch your default assistant?

CFTC Prediction Market Rule vs State Bans: The Constitutional Fight Over Who Regulates the Future

Google Deepfake Call Detection: Android's Most Important Security Feature of 2026

Slate Auto: The Privacy-First EV Pickup With No Embedded Modem — Why This Matters

Squillions: How Money Laundering Won — A Book Review and Historical Reflection

Paxos Wins SEC Approval to Clear US Stocks on Blockchain: What Tokenized Equities Actually Means

Hyperliquid: How a Decentralized Perpetuals Platform Is Beating Ethereum in Daily Volume

Bitcoin at $67K: Strategy's Sale, ETF Outflows, and Why the Fear Might Be Overdone

가계부채 1,900조: 한국 금융의 뇌관

cgroups v2로 컨테이너 자원 제한을 실제로 검증해봤다

Anesthesia Works. Nobody Knows Exactly Why.

1기 신도시 재건축, 2026년 현황은 어디까지 왔나

Loss Aversion — Why Losing $100 Feels Worse Than Winning $200 Feels Good

황소자리 · 6월 운세, 시즌이 끝난 뒤가 오히려 시작

청약 가점 계산법, 1점이 당락을 가르는 이유와 놓치기 쉬운 함정

구글 Veo 3 써봤습니다: 영상과 소리가 같이 나옵니다

Node.js 이벤트 루프 — 타이머, I/O, 마이크로태스크가 뒤엉킬 때

물고기 꿈 · 잡으면 재물, 놓치면 기회를 놓친 걸까

Bun 1.x vs Node.js: 2026년에도 갈아탈 만한가

GTX-C 노선 착공 확정, 의정부·수원·금정 역세권 어떻게 달라지나

노량진1구역 49층, 장위15구역 3,316가구, 5월 심의를 통과한 세 곳

2026 서울, 신규 입주 줄고 전셋값 오른다 — 공급 절벽이 숫자로 보인다

이가 빠지는 꿈, 진짜 나쁜 꿈일까요

2026 기초연금 인상액과 선정기준액 한 번에 정리

2026 하반기 직장인 건강보험료 계산법

DeFi Yield in 2026 — Where the Numbers Actually Come From

Bitcoin's Fourth Halving — What the Supply Shock Thesis Actually Claims

MiCA and the Global Crypto Regulation Divergence

Ethereum L2s: Optimistic vs. ZK Rollups — Where Are We in 2025?

Bitcoin ETFs: What Institutional Flow Data Actually Shows

Stablecoins: Why the Trilemma Keeps Winning

MEV: The Hidden Tax on Every Ethereum Transaction

Zero-Knowledge Proofs: What They Actually Prove (And What They Don't)

Zero-Knowledge Proofs: Why the Cryptography Behind Privacy Is Becoming Infrastructure

Crypto Custody: Why the Gap Between Institutional Requirements and Hardware Reality Still Matters

Bitcoin ETFs: One Year In — What the Inflow Numbers Actually Tell Us

Bitcoin Mining's Energy Source Shift: Stranded Gas, Renewables, and the Grid Balance Argument

Ethereum EIP-4844 Blobs: What Actually Changed After Dencun for L2 Fee Economics

Stablecoin Regulation in 2025: US GENIUS Act vs EU MiCA — Two Different Risk Theories

Lightning Network in 2025: Why Bitcoin L2 Adoption Lags the Architecture

Decentralized Identity: DIDs, Soulbound Tokens, and Why This Problem Is Harder Than It Looks

Institutional Crypto Custody After the ETF Approvals: What's Actually Changed

Stablecoin Design Tradeoffs: Fiat-Backed vs Algorithmic vs CDP — Where Each Breaks

MiCA Is Live: What the EU Crypto Framework Actually Changes for Projects and Users

Ethereum Restaking: What EigenLayer Is Building and Why the Risk Profile Is Non-Trivial

Polymarket and On-Chain Prediction Markets: What Information Aggregation Actually Looks Like

Bitcoin Mining After the 2024 Halving: What the Economic Reality Looks Like a Year Later

Solana vs Ethereum in 2025–2026: The Developer Ecosystem Comparison That Actually Matters

Tokenized Government Bonds: The RWA Convergence That's Actually Happening in 2025-2026

DePIN: What the Helium Story Teaches Us About Decentralized Physical Infrastructure

Bitcoin Spot ETF: What January 2024 Actually Changed for Institutional Adoption

The DeFi Insurance Problem — Why Protocol Risk Coverage Is Still Structurally Unsolved

NFT Market 2.0 — What Survived the 2022 Crash and What's Actually Emerging

Ethereum's Dencun Upgrade — What Proto-Danksharding Actually Changed for L2 Costs

DAO Governance in Practice — What Failed, What Survived, and What We Learned

Bitcoin as Treasury Reserve — What MicroStrategy's Experiment Actually Proved

The FTX Collapse — What $8 Billion in Missing Funds Actually Revealed About Crypto

Ethereum's Staking Problem — Why Decentralization Was Always More Complicated Than the Whitepaper Su

The $10 Trillion Tokenization Narrative vs. What's Actually Deployed

Where Crypto Venture Capital Is Actually Going in 2026 — A Portfolio-Level Analysis

The Layer 2 Fragmentation Problem: Solving Scalability While Creating New Risk

Bitcoin Halving and Price Impact: What the Data Actually Shows

Solana's Fee Market: Why Congestion Behaves Differently Here

NFT Royalties Failed. Here's What That Actually Means for Creators

Restaking Doesn't Mean Shared Safety

"Why Diamonds Are Not the Hardest Material: Lonsdaleite and What Beats Carbon"

"How CRISPR Actually Cuts DNA: The Molecular Scissors Explained"

"The Double Slit Experiment: Why Light Is Stranger Than You Think"

Why Is the Sky Blue? The Physics of Rayleigh Scattering Explained

How Nuclear Reactors Work — The Physics of Controlled Fission Explained

How Airplane Wings Actually Generate Lift — It's Not What Textbooks Say

Ethereum Staking Economics: What 32 Million ETH Staked Actually Means

CBDC vs Stablecoins: Two Very Different Answers to the Same Question

Bitcoin Layer 2 — Why the Scaling Problem Is Still Partially Unsolved

Bitcoin Halving 2024: Miner Economics, Supply Dynamics, and Price Analysis

The Fall of Constantinople: How 1453 Ended the Medieval World and Reshaped Eurasia

The Meiji Restoration: How Japan Industrialized in 40 Years What Took Europe 150

Ethereum L2 Landscape 2026: Arbitrum, Base, and the Rollup Wars

The Cuban Missile Crisis: Thirteen Days That Almost Ended the World

The Florentine Renaissance: How a Banking Family Accidentally Funded a Cultural Revolution

Stablecoin Regulation 2026: The GENIUS Act and Global Frameworks

The July Crisis of 1914 — How an Assassination Cascaded into World War

The Silk Road — How Pre-Modern Globalization Shaped Civilizations

Lightning Network 2026: Bitcoin Payments at Scale — Progress and Problems

The Space Race 1957–1969: Sputnik to the Moon as Cold War Proxy

The Black Death 1347–1353: How the Plague Remade Medieval Europe

"Web3 Gaming 2026: Past the Hype, What Actually Works"

"Why Rome Fell: Rejecting the Simple Answers"

The Cold War: How Allies Became Enemies in Two Years

MiCA Is Live: How Europe's Crypto Law Is Reshaping the Industry

The Industrial Revolution: Why Britain First, Why Then

Pax Mongolica: How the Mongol Empire Connected the Medieval World

Bitcoin Ordinals and Inscriptions — The Cultural Layer Nobody Predicted

Ethereum's Blob Space Economics — How EIP-4844 Changed the L2 Fee Market

The Bronze Age Collapse, 1200 BCE — How the Ancient World's First Globalization Ended Overnight

The Haitian Revolution, 1791–1804 — How Enslaved People Built the First Black Republic

"Stablecoins in 2026 — How USDC, USDT, and DAI Are Diverging on the Path to Mass Adoption"

"The Partition of India, 1947 — How Fourteen Months of Decolonization Created 70 Years of Conflict"

"The Reign of Terror — How the Revolution Devoured Its Own Architects"

"Layer 2 Fragmentation — Why Ethereum's Rollup Ecosystem Needs a Unified Liquidity Layer"

"Bitcoin Mining After the 4th Halving — How Proof-of-Work Economics Are Shifting"

"The Meiji Restoration — How Japan Went from Feudal Isolation to Industrial Empire in 50 Years"

"The Reconquista's Long Shadow — How Iberian Religious War Shaped Colonial Latin America"

"NIO Battery Swap in Europe: The Chinese EV Strategy That Western Automakers Cannot Copy"

"Undercollateralized DeFi Lending: The Problem That Keeps Blocking Mainstream Crypto Credit"

"Quantum Gyroscopes: How Atom Interferometry Is Making GPS-Independent Navigation Possible"

"The Mongol Yuan Dynasty — How Genghis Khan's Grandsons Tried to Rule China and Changed Asia Forever

"XPENG G9: The Chinese EV That Is Quietly Taking Market Share in Europe and Southeast Asia"

"The Beam Chain: What Ethereum's Consensus Layer Rewrite Actually Means for Validators"

"Quantum Dot Displays: The Physics Behind Why QLED and QD-OLED Look Different From Every Other Scree

The Roman Empire's Third-Century Crisis — When 26 Emperors Failed in 50 Years

Stellantis Jeep EV Strategy: Why the Wrangler 4xe Success Story Masks Deeper Problems

Tokenized US Treasuries — How BlackRock BUIDL and Franklin OnChain Crossed $5B in 2026

Synthetic Biology Containment: How Scientists Build Kill Switches Into Engineered Life

The Persian Empire — How Cyrus and Darius Built the World's First Multicultural Superstate

Hyundai Ioniq 9: How the Three-Row Electric SUV Challenges Tesla Model X on Every Metric

Carbon Nanotube Transistors: The Material That Could Take Over When Silicon Runs Out of Room

The Meiji Restoration — How Japan Modernized Faster Than Any Nation in History

"Renault 5 EV: How a 1970s Icon Became Europe's Best-Selling Affordable Electric Car in 2026"

"The Hunt for Room-Temperature Superconductors: What LK-99 Taught Us"

"The Great Wall of China — Why the Ming Dynasty's Greatest Project Was Its Greatest Failure"

Toyota Land Cruiser 70 Series Revival: Why the World's Most Durable SUV Gets New Power

DAO Governance Failures: What MakerDAO, Uniswap, and Compound Teach About Decentralization

James Webb Space Telescope: What Two Years of Data Revealed

BYD Ocean Series Global Expansion: How China's EV Giant Is Entering Europe and Southeast Asia

Bitcoin Lightning Network in 2026: Why Channel Liquidity Remains the Unsolved Problem

Neuromorphic Computing in 2026: How Intel Loihi 2 and IBM NorthPole Mimic the Brain

The Partition of India, 1947: How Mountbatten's Rushed Decision Created Seventy Years of Conflict

Restaking Deep Dive: EigenLayer's Promise and Its Hidden Risks

Ocean Acidification: The Chemistry Dissolving Coral Reefs and What Marine Biology Can Do

The Industrial Revolution's Hidden Price — How Manchester Became Rich and Miserable at Once

The Pax Mongolica — How Mongol Conquest Created the Medieval World's Greatest Trade Network

Tesla FSD v13: How End-to-End Neural Networks Eliminated 300,000 Lines of Code

Solana Firedancer — Jump Crypto's Validator Rewrite and What 1M TPS Means for DeFi

Nuclear Fusion Ignition: How NIF Achieved Ignition and What Comes Next

The Fall of the Ottoman Empire — How WWI Ended 600 Years of Ottoman Rule

"BYD Global: How China's EV Giant Is Winning Outside China"

L2 Fee Wars — When Rollup Competition Drives Gas to Zero

"Quantum Entanglement: Beyond the Spooky Action at a Distance"

Weimar Hyperinflation — When a Currency Collapses in Real Time

DeFi Protocol Security in 2026: What $5 Billion in Hacks Taught the Industry

Bitcoin Script: From Simple Signatures to Taproot — How Bitcoin's Programmability Quietly Grew

Hyundai-Kia's Global EV Strategy: How a Korean Automaker Became the #3 EV Seller Worldwide

Antibiotic Resistance: The Molecular Arms Race We've Been Losing Since 1943

Dark Matter: The Evidence Is Overwhelming, the Particle Is Missing, and the Alternatives Are Weird

"BYD's Global Push: How China's EV Giant Is Navigating Trade Barriers"

"Ethereum Pectra: What the Upgrade Actually Changed and Why It Matters"

"The American Civil War: Why Economics, Not Just Slavery, Made the Conflict Inevitable"

"Why Antibiotics Are Losing — The Biology of Resistance and Why It's Getting Worse"

"Quantum Batteries: Are They Even Possible — And What Would They Change?"

The Ottoman Empire at Its Peak — How a Sultan Governed a Civilization of Thirty Million

Formula E: How Motorsport Is Actually Influencing Production EVs

Adult Neuroplasticity — What the Brain Can and Cannot Rewire

How the Mongol Empire Actually Governed a Third of the World

Synthetic Biology — Engineering Life at the Cellular Level

What JWST Is Finding in Exoplanet Atmospheres — And Why the Results Are Stranger Than Expected

The Fall of the Berlin Wall — How a Single Night in November Ended the Cold War

Real-World Asset Tokenization: The Bridge Between TradFi and DeFi

BYD's Global Expansion in 2026: Markets Won, Markets Blocked

Autonomous Trucking: Why Highways Are Easier Than Cities

Crypto ETFs and Institutional Adoption: What Has Actually Changed

The Silk Road: Not One Road, But a Network of Networks

Portugal's Age of Exploration: How a Small Kingdom Reshaped Global Trade

Lucid Gravity vs. Rivian R1S: The Premium Electric SUV Battle That Matters

Waymo in 2026: How the Only Profitable Robotaxi Got There

Bitcoin Ordinals Two Years On: Ecosystem, Controversy, and What Actually Stuck

The Yam Postal System: How the Mongol Empire Moved Information Faster Than Any Empire Before

Beyond Sputnik: How the Space Race Produced Science Neither Side Expected

Chinese EV Tariffs in Europe: Market Disruption, OEM Responses, and the Trade-Off

GM's EV Pivot: Ultium Results, Retreats, and What Comes Next

Real-World Asset Tokenization — The Quiet DeFi Revolution Institutions Actually Want

After the ETF — What Institutional Crypto Adoption Actually Looks Like

The Great Divergence — How Industrialization Invented Modern Inequality

Silk Road and the Black Death — How Trade Routes Became Plague Routes

The EV Charging Infrastructure Race: Tesla vs. Everyone Else in 2026

DAO Governance: Lessons from the Failures (and What's Actually Working)

Ocean Carbon Capture — Promise, Risk, and the Science Behind It

Viking Trade Empire — Beyond the Raids

The Cold War's Forgotten Fronts — Proxy Wars That Shaped the Modern World

Hydrogen Fuel Cell vs BEV 2026

Zero-Knowledge Proof Applications 2026

mRNA Technology Beyond COVID-19

DeFi Lending Protocol Evolution 2026

Tesla Robotaxi: What We Know After the Austin Launch

Chinese EVs in Europe 2026: Tariffs, Tactics, and Market Share

The 1918 Spanish Flu — What the Deadliest Pandemic in Modern History Actually Teaches Us

Dark Matter Detection — Every Method That Has Been Tried and What We've Learned

CRISPR Base Editing: The Precision Upgrade That Changes Everything

The End of the Silk Road: How 1453 Rewired Global Trade

Ethereum Restaking in 2026: EigenLayer, Risk Layering, and the Yield Stack

Bitcoin Layer 2 in 2026: Lightning, Taproot Assets, and What's Actually Used

Stablecoin Regulation in 2026: The Patchwork Global Framework

전세사기 예방 체크리스트 — 계약 전 반드시 확인할 것들

The Used EV Market in 2026: Battery Degradation, Resale Value, and What Buyers Need to Know

Solana's Ecosystem in 2026: From Near-Death to Dominant

Ethereum Staking in 2026: Real Yields, Real Risks

Bitcoin After the 2024 Halving: Supply Shock Reality Check

2026년 건강보험료 인상 — 직장인·지역 가입자 실제 변화

BYD's Global Push — How China's EV Giant Is Winning Markets Outside China

Beyond CRISPR Scissors — Base Editing Is Quietly Changing Genetic Medicine

The Black Death's Economic Aftermath

The Fall of the Roman Republic — Patterns That Keep Repeating

주거급여 2026 — 신청 조건부터 금액 계산까지

o3 vs o4 mini — 추론 모델, 실제로 어떻게 다른가

EU Tariffs vs. Chinese EVs: Trade War on Wheels

Bitcoin ETF Inflows — What the Institutional Adoption Curve Actually Looks Like

아이 낳으면 받을 수 있는 지원금 체크리스트 — 2026년 기준

건강보험료 줄이는 방법 총정리 — 직장인·지역가입자 각각 다르다

한국 팹리스 생태계 현황 — 삼성·하이닉스 뒤에 뭐가 있나

Gemini 2.5 Pro vs GPT-5 — 실제로 써보면 뭐가 다른가

"Bitcoin's Lightning Network in 2026 — Where Is Payment Adoption Actually Heading?"

DeFi Institutional Adoption in 2026: What Actually Changed

Solana Ecosystem 2026 — What Survived the FTX Collapse and What Grew Back

오피스텔·원룸 투자 현실 — 수익률 계산에서 빠지는 것들

전세 사기 피하는 체크리스트 — 계약 전에 반드시 확인할 것들

스마트폰 데이터 아끼는 실용 설정 — 배경 앱부터 스트리밍까지

국민연금 반환일시금 — 납부 이력이 있고 해외이주 시 돌려받는 방법

DeFi Meets Real-World Assets — Tokenization in 2026 Beyond the Hype

자동차 보험료 낮추는 실전 방법

2026 건강보험료 계산하는 방법

재개발 투자, 기대와 현실의 차이

청약 당첨 전략, 점수제 완전 분석

강남 아파트 가격, 2026년에도 오를 수 있을까

Anthropic 2026 전략: Claude Enterprise가 바꾸려는 것

黄金还是人民币资产：2026年如何选择

美联储降息：中国资产的机会与陷阱

Social Proof Gone Wrong — When Consensus Thinking Becomes a Cognitive Trap

What Bitcoin Spot ETFs Actually Changed

Ethereum's Layer 2 Problem Is Not Technical

마트 할인 제대로 활용하는 법 — 카드·시간대·앱 조합

OpenAI GPT-5 프리뷰: 뭐가 달라졌나 총정리

(see prod)

재개발·재건축 투자 — 2026년 체크해야 할 리스크 3가지

전세사기 피해자 지원 제도 — 2026년 신청 가능한 것들 총정리

(see prod)

(see prod)

(see prod)

(see prod)

(see prod)

住宅ローン借り換え2026：金利上昇局面での損益分岐点

新NISA2年目の現実：実際のリターンと見直しポイント

楽天モバイル2026：黒字化への最後の砦と課題

黄金投资2026：美元体系松动与实物配置逻辑

中国房地产复苏2026：真实数据还是政策幻象

여름 전기세 폭탄 방지법, 진짜 효과 있는 것만 골라봤어요

GTX 역세권 분양 사기 파일, 그게 어떻게 가능했을까

프리랜서 종합소득세 신고 가이드 — 처음이어도 혼자 할 수 있다

Quantum Error Correction 2026: Why Fault-Tolerant Quantum Computers Are Still Years Away

A股估值陷阱：低PE背后的真实风险

日銀追加利上げ後のNISAポートフォリオ: 何を見直すべきか

아파트 담합 의혹, 실제로 어떻게 작동하는가

OpenAI o3 미니 벤치마크 분석: 숫자 뒤에 숨은 진짜 이야기

2026 아동수당·양육지원금 총정리

검색엔진 대결: Perplexity vs Google — 2026년 현황

Anthropic Claude 4 써봤습니다 — GPT-5랑 뭐가 다를까

中国刺激政策2025：投资者需要区分的三类政策效果

日銀利上げと住宅ローン：変動金利ユーザーが今知るべき実務知識

"The Song Dynasty's Paper Experiment — The World's First Fiat Collapse"

中国债券市场2026：利率下行周期中的机会与风险

iDeCo vs NISA：老後資金づくりでどう組み合わせるか

건강보험료 줄이는 방법, 진짜 되는 것만 골라봤어요

DeFi Insurance — How Nexus Mutual and Unslashed Are Tackling Smart Contract Risk

上海 vs 深圳 — 2026年どちらの不動産が本当に「持つ価値」があるか

Jリート — 金利上昇局面でも生き残る物件タイプを探す

2026年の日本株 — NISAマネーが向かうセクターを読む

"서울 아파트 5월 시장, 관망이 정답인 이유"

"퇴직금 계산법, 이것만 알면 됩니다"

2026 건강보험료 계산법 — 직장가입자·지역가입자 차이

ChatGPT 5.5 Pro 출시 — 수학자 팀 고워스의 실사용 리뷰가 말해주는 것

퇴직금 계산법 완전 정리 — 1원도 빠짐없이 받는 법

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