Bitcoin's Dust Limit: How the 546-Sat Threshold Works
Bitcoin's dust limit is derived from relay fees and input byte sizes, not policy preference. The exact arithmetic behind 546, 294, and 330 satoshis, explained.
№ 002BitcoinBitcoin Mempool Eviction: When Low-Fee Txs Disappear
Bitcoin's mempool purges low-fee transactions during fee spikes, a deliberate mechanism every sender should understand before broadcasting.
№ 003BitcoinBitcoin Weight Units and SegWit Fee Rates Explained
Weight units split transactions into base and witness data, priced at 4:1. The math behind sat/vB, vbytes, and why SegWit inputs cost ~40% less.
№ 004BitcoinBitcoin Dust: Why High-Fee Networks Create It Faster
Small UTXOs become unspendable dust when fees exceed their value. High-fee networks accelerate this faster than most people realise.
№ 005BitcoinBitcoin Mempool Replacement Policies Explained
Bitcoin nodes apply different replacement rules to the same transaction. The mechanics, tradeoffs, and practical fixes for a stuck or rejected bump.
№ 006BitcoinBitcoin 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.
№ 007BitcoinBitcoin 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.
№ 008BitcoinBitcoin Dust Threshold: What Makes a UTXO Unspendable
The Bitcoin dust threshold isn't arbitrary. Here's the exact fee logic that turns a tiny UTXO into an unspendable output — and why it matters.
№ 009BitcoinHow Mempool Congestion Spreads Across Node Clusters
Mempool congestion doesn't hit all nodes at once. Here's how geographic propagation works and why your fee estimate can lag reality by minutes.