Mempool
Each Bitcoin node holds a "memory pool" of valid but unconfirmed transactions. Mempool TXs can be replaced (RBF) or evicted before confirmation. Our mempool watcher surfaces whale moves ~3 seconds after broadcast, before block inclusion.
RBF Transactions: When Whales Change Their Mind
Crypto · On-chain analysis · 60 seconds
Key takeaways
- RBF lets users bump transaction fees without broadcasting a new tx
- Whales use RBF to cancel or redirect large moves mid-flight
- High RBF activity signals uncertainty or last-minute strategy shifts
- Tracking RBF patterns reveals whale hesitation before major moves
Full explainer
Why do the biggest Bitcoin transactions sometimes vanish from the mempool? Replace-by-fee, or RBF, is how whales change their mind mid-transaction. Instead of waiting or restarting, they bump the fee and redirect coins to a different address—all without the blockchain knowing. When RBF activity spikes among large holders, it's a red flag: whales are uncertain, reconsidering positions, or testing the market without fully committing. This hesitation often precedes price swings. By monitoring RBF patterns, you spot whale anxiety before it hits the charts.
Originally posted on YouTube: https://youtu.be/oW6oEZSW7NM
Glossary terms used in this explainer
Spot
The market for immediate delivery of an asset at the current price. Opposite of "futures" (where you trade a contract for future delivery) or "perpetuals" (perpetual-futures with funding rates). When we say "BTC price" without qualifier we mean spot.
Whale
Transactions of 500 BTC or larger but below the Mega Whale threshold (1,000 BTC). Common for large traders, OTC desks, exchange operations, and treasury management. Most actionable tier for daily flow analysis.