PSBT and Bitcoin Multisig: The Offline Signing Format
BIP-174's PSBT format lets distributed signers approve Bitcoin transactions independently, on air-gapped devices, with no shared online session required.
№ 038BitcoinBitcoin Compact Block Relay: Latency, Numbers, Mechanics
Compact block relay cuts Bitcoin's propagation bandwidth by ~98%. BIP 152 explained with figures, a worked example, and misconceptions addressed.
№ 039BitcoinWhy Bitcoin's Timechain Makes Censorship Very Costly
Bitcoin's block structure makes retroactively censoring a confirmed transaction ruinously costly. Here's the exact mechanism, with numbers.
№ 040BitcoinBitcoin Network Topology: Speed vs Privacy Explained
How Bitcoin's peer-to-peer topology shapes how fast your transaction spreads and how private it stays. The tradeoff most guides skip entirely.
№ 041BitcoinBitcoin Schnorr Signatures and Key Aggregation Explained
Schnorr signatures let multiple Bitcoin signers collapse into one. Here's exactly how key aggregation works and why it cuts fees and improves privacy.
№ 042BitcoinBitcoin 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.
№ 043BitcoinHow 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.
№ 044BitcoinBitcoin 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.
№ 045BitcoinBitcoin 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.
№ 046BitcoinBitcoin'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.
№ 047BitcoinHow 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.
№ 048BitcoinWhy High Bitcoin Fees Don't Always Mean Faster Confirmation
A higher fee doesn't guarantee a faster Bitcoin confirmation. Here's the exact mechanics of mempool prioritisation, and where the logic breaks down.