Bitcoin Median Time Past: Block Timestamp Manipulation
Median Time Past prevents miners from faking Bitcoin block timestamps. The exact mechanic, its real limits, and what a 15% miner actually controls.
№ 002BitcoinBitcoin Signet Custom Challenge: Private Consensus Rules
Bitcoin's signetchallenge parameter lets developers run a fully controlled private test network. The mechanism, its real limits, and how to spin one up.
№ 003BitcoinCoin 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.