Bitcoin Node Security: Outbound vs Inbound Connections
Bitcoin Core trusts outbound connections more than inbound, and for precise reasons. The security logic behind that asymmetry, explained for node operators.
№ 038BitcoinBitcoin's Script Version Byte and Soft Fork Upgrades
Bitcoin's one-byte witness version field lets soft forks add new spending rules without invalidating old wallets or splitting the chain.
№ 039BitcoinBitcoin Full Node Economics: A Ten-Year Breakdown
Hardware, bandwidth, and opportunity costs all shape whether running a full Bitcoin node makes financial sense. The arithmetic, read straight.
№ 040BitcoinBitcoin Coin Selection: Fees, UTXOs, and Wallet Algorithms
Coin selection algorithms quietly determine your transaction fees and UTXO bloat. This piece breaks down Branch and Bound, dust, and consolidation strategy.
№ 041BitcoinBitcoin 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.
№ 042BitcoinBitcoin Compact Filters: Private Light Client Sync
BIP 157/158 compact filters let Bitcoin light clients verify transactions locally without exposing addresses to any full node. The mechanism, plainly explained.
№ 043BitcoinBitcoin 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.
№ 044MiningBitcoin Nonce Exhaustion: How Miners Roll Timestamps
A single ASIC sweeps Bitcoin's 4-billion nonce space in 0.00003 seconds. The timestamp field and ExtraNonce are what keep the search running.
№ 045BitcoinLightning Node Routing Revenue: The Real Net Math
Channel open/close costs and rebalancing fees routinely exceed routing income. A breakdown of the full cost structure most node dashboards hide.
№ 046BitcoinBitcoin SPV Bloom Filters and the Privacy Leak
SPV bloom filters were designed to obscure your addresses from nodes, the intersection attack math shows why they don't, and what actually works instead.
№ 047MiningMining Farm Cooling Costs: Engineering Per-Hash Efficiency
Cooling is a mining farm's second-largest expense. Operators who master thermal infrastructure cut cost per hash, this piece breaks down exactly how.
№ 048SecurityBitcoin Peer Discovery and Eclipse Attacks Explained
Bitcoin's peer discovery resists eclipse attacks via randomized bucketing, anchor peers, and subnet limits, but the gaps are real and worth knowing.