Coin Age: The Metric That Shaped Early Proof-of-Stake
Coin age powered the first proof-of-stake blockchains before being quietly retired. It had genuine appeal and a structural flaw that slashing eventually solved.
№ 014EthereumEthereum Gasper Slashing: Attestation Rules and Penalties
Gasper punishes double voting and surround votes with scaled ETH penalties. The math, the failure modes, and why slashing protection databases matter.
№ 015EthereumEthereum's Fork Choice Rule: Tie-Breaking in LMD-GHOST
When two Ethereum blocks carry identical attestation weight, a deterministic root-hash rule decides the winner, the mechanic explained, with a worked example.
№ 016EthereumEthereum Gasper: Proposer Slashing Explained
Gasper slashes validators who sign two blocks at the same slot. Mechanism, correlation penalty math, and a concrete worked example.
№ 017EthereumEthereum's Fork Choice Rule and Late Attestations
How Ethereum's LMD-GHOST handles attestations that arrive after the voting deadline, and what it means for chain security.
№ 018EthereumGasper Attestation Timing: Slot Weights Explained
Gasper cuts attestation rewards sharply with each slot of delay. The precise mechanic, the three scoring components, and worked numbers.
№ 019EthereumEthereum's Gasper Consensus: Casper FFG and LMD-GHOST
Gasper powers Ethereum's finality. Learn how Casper FFG and LMD-GHOST fork choice combine to keep the chain safe and live.
№ 020EthereumEthereum Attestation Aggregation Explained
Ethereum's attestation aggregation shrinks consensus bandwidth by orders of magnitude while keeping fault tolerance intact. The actual mechanism, examined.
№ 021EthereumEthereum Proposer Boost: Stopping Short-Range Reorg Attacks
Proposer boost adds a 40% committee-weight bonus to timely blocks, raising the cost of short-range reorg attacks above rational MEV profit thresholds.
№ 022EthereumEthereum Weak Subjectivity Period: How It's Calculated
Ethereum's weak subjectivity period isn't arbitrary. Learn how validator withdrawal rates set its length and why it matters for node security.
№ 023EthereumEthereum Validator Inactivity Leaks Explained
Inactivity leaks drain ETH stake gradually by design. The math is specific, the tradeoffs are real, and every serious validator operator should understand both.
№ 024AnalysisEconomic 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.