Bitcoin Replace-by-Fee: Why Merchants and Devs Clash
Replace-by-Fee lets senders bump stuck transactions, but it breaks zero-confirmation payments. Here's the real mechanic behind the tension.
№ 122MiningBitcoin Mining Difficulty Falls 10% in Sharp 2026 Drop
Bitcoin mining difficulty fell roughly 10% in the second-largest downward adjustment of 2026. What the move tells us about hashrate and miner stress.
№ 123BitcoinHow Bitcoin Script Evaluates Multi-Condition Spending Paths
Bitcoin's Script interpreter walks a stack machine through every spending condition. Here's exactly how multi-path validation works, with a concrete example.
№ 124DeFiWhy Atomic Swaps Need HTLCs: Bitcoin and Ethereum
Atomic swaps between Bitcoin and Ethereum only work because of hashed timelock contracts. Here's the exact mechanism, with a concrete example.
№ 125MiningHow Mining Pool Variance Reduction Works
Solo mining is a lottery. Pool variance reduction through proportional share accounting turns that lottery into a paycheck. Here's the exact mechanics.
№ 126BitcoinBitcoin Halving and Transaction Fees: What Changes
The block reward halving cuts miner subsidies, not fee revenue. Here's the exact mechanism, with numbers, and why the distinction matters.
№ 127SecurityCoinbase Quantum Risk Report Flags Bitcoin Cold Wallets
Coinbase's quantum risk report puts exchange cold wallets among the bitcoin exposed by address reuse. What the warning means and what to watch.
№ 128SecurityBug vs Attack Chain Reorganizations: Key Differences
Chain reorgs look identical on the surface. Here's how engineers and analysts tell a bug apart from a deliberate attack, and why it matters.
№ 129BitcoinBitcoin Pay-to-Script-Hash: How P2SH Works
P2SH lets Bitcoin hide multisig and contract logic until coins are spent. Here's the exact mechanism, with a worked example.
№ 130BitcoinBitcoin's Coinbase Maturity Rule Explained
Bitcoin forces miners to wait 100 blocks before spending a block reward. Here's the exact mechanic, why it exists, and what it prevents.
№ 131BitcoinHow SegWit Changed Bitcoin Transaction ID Calculation
SegWit didn't just shrink fees. It fixed a subtle flaw in how Bitcoin transaction IDs are built. Here's the exact mechanism, explained clearly.
№ 132MiningHash Rate Distribution and Bitcoin Censorship Resistance
How mining pool concentration quietly shapes Bitcoin's ability to resist transaction censorship — and what the numbers actually mean for the network.