Merkle Mountain Ranges: Proof of Inclusion Explained
MMRs let blockchains prove data inclusion against a growing history without invalidating old proofs. The mechanic, the math, and the tradeoffs.
№ 050AnalysisEconomic Attacks: Proof-of-Stake vs Proof-of-Work
Attack costs in PoS and PoW differ mechanically, not just in scale. A precise breakdown of what attackers spend, risk, and lose in each model.
№ 051EthereumWhy Gas Estimation Undercounts Smart Contract Costs
Gas estimation fails in predictable ways. Learn the exact mechanics behind undercounts, from storage slots to dynamic calls, with a worked example.
№ 052SecurityHomomorphic Encryption vs Zero-Knowledge Proofs
HE computes on encrypted data; ZK proofs verify claims about it. Understanding the mechanical difference prevents costly architectural mistakes.
№ 053DeFiBlockchain Bridge Verification: Optimistic vs ZK Proofs
Optimistic bridges wait for objections; ZK bridges prove correctness first. The security tradeoffs are starker than most explanations admit.
№ 054AnalysisFinality Reversion vs. Reorganization in Proof-of-Stake
A finality reversion breaks a cryptographic guarantee; a reorg is a race condition. The difference determines whether settlement is statistical or binding.
№ 055BitcoinBitcoin Timelocked Multisig for Inheritance Planning
Timelocked multisig scripts can serve as a Bitcoin dead-man's switch. Here are the mechanics, the design tradeoffs, and the failure modes.
№ 056EthereumValidator Client Diversity and Ethereum Safety
A majority-client bug can finalize a bad block permanently, understand why the validator layer carries more systemic risk than the execution layer.
№ 057DeFiGovernance Attacks: Vote Buying vs. Delegation Exploits
Vote buying and delegation exploits both hijack on-chain governance through opposite mechanics, and the defenses that stop one are useless against the other.
№ 058SecurityHow DeFi Price Oracles Fail Under Flash Loan Attacks
Flash loans and slow manipulation break oracles in opposite ways. Understanding the mechanics helps you see why no single fix solves both problems.
№ 059EthereumEthereum's Deposit Contract: No Withdrawals by Design
Ethereum's deposit contract holds no withdrawal logic, no admin key, and no override. How 32 ETH became a one-way trip, and the tradeoffs that followed.
№ 060BitcoinBitcoin Anti-Fee-Sniping: Mechanism and Miner Incentives
Anti-fee-sniping uses nLocktime to make block reorgs unprofitable. Learn the exact mechanism, the privacy tradeoff, and why it matters more each halving.