Bitcoin Script Stack Evaluation: Order Creates Bugs
Bitcoin Script's stack-based execution order produces subtle, costly bugs in complex spending conditions, mechanics and a worked example examined.
№ 038SecuritySmart Contract Proxy Storage Collision Explained
Proxy patterns enable smart contract upgrades, but storage slot collisions can silently corrupt funds, the mechanism, the tradeoffs, and what auditors check.
№ 039SecurityBulletproofs: Range Proof Verification at Logarithmic Scale
Bulletproofs cut Monero range proof sizes from ~13 KB to under 800 bytes. The mechanism is a recursive inner product argument, and the math holds up.
№ 040SecurityVerifiable Delay Functions and Randomness Beacon Security
VDFs make on-chain randomness manipulation structurally expensive via a sequential delay no adversary can compress. The mechanics, caveats, tradeoffs.
№ 041DeFiDeFi Lending Protocols: Governance Attack Defenses
Timelocks, quorum thresholds, and historical vote snapshots form layered barriers against governance attacks, each mechanism examined on its own terms.
№ 042SecurityFormal Verification vs Smart Contract Security Audit
A security audit finds likely bugs. Formal verification proves their absence mathematically. The difference in cost, time, and guarantees, laid out plainly.
№ 043DeFiPlasma Mass Exit: The Mechanism When Data Is Withheld
A Plasma operator withholds block data and every user must race to exit. The exact mechanism, its structural limits, and what it reveals about Layer 2 security.
№ 044AnalysisAre Crypto Presales Safe? How to Spot a Scam Before You Buy
Presales can hand you an early entry or clean out your wallet. Here's the exact checklist I run before I put a single dollar into one.
№ 045SecurityKeccak-256 Preimage Resistance and Ethereum's State Trie
How Ethereum's Keccak-256 hash function blocks preimage attacks on the state trie, explained with concrete mechanics and a worked example.
№ 046DeFiZero Slippage Tolerance Starves Sandwich Bots
Zero slippage tolerance forces sandwich bots into guaranteed losses, the mechanics of amountOutMinimum explain exactly why the attack collapses.
№ 047BitcoinBitcoin Proof-of-Work: Why Blocks Cost Real Energy
Bitcoin's Hashcash mechanism forces miners to burn electricity to produce valid blocks. The energy expenditure is the security model, not a design flaw.
№ 048SecurityCross-Chain Governance Attacks via Bridge Collateral
Bridges holding governance-eligible collateral can swing a vote without buying a single token. The mechanics, failure modes, and limits of standard mitigations.