September 16th, 2240. Q3 Settlement Day. Coinbase Prime cold storage signing bunker. The High Intern adjusts his ceremonial robes and squints at the settlement chit between chubby-fingered taps at the faded keys of an ancient ThinkPad. "UTXO 1: Nakamoto Corp balance: ₿16,592,653.58979323 credit: +0.19716939" *tap tap-tap tap* "UTXO 5: Terran Federal Reserve balance: ₿846,264.33832795 debit: -0.51058209" *tap-tap-tap tap ... tap* "UTXO 461: Strategy balance: ₿7.49445923 no change" mNAV is looking healthier, at least. *tap tap tap* there, done. > cat utxos.json | bitcoin-cli -stdin createrawtransaction The Intern glances up at the Mempool Space terminal display mounted on the frigid concrete wall. The next projected block lies dark and still. No other on-chain transactions yet this month. Again. Recommended fee: 0.1 sat/vB yes, that ought to do it. > bitcoin-cli fundrawtransaction ... '{ "feeRate": 0.1 }' > bitcoin-cli signrawtransactionwithwallet ... > bitcoin-cli sendrawtransaction ... - wait - A large square slides into place on the Mempool display. Deep red. no. no no. no no no no no. not again. ~~~~~~~~ Foundry Galactic HQ, Sol Station. Chief Mining Officer's quarters. The door bursts open, jolting him awake. "Sir, our relay nodes have detected a new unconfirmed transaction! It's a whopper, sir - at least 90 kilovbytes - and you'll never believe this..." The CMO swivels in his hoverchair towards the Mempool Space wallscreen and clicks on the lone glowing red square suddenly occupying one corner of the next projected block. Overpaid 100,000x Fee rate: 10,000 sat/vB Fee: 9.0 BTC "Mother of God ... "Get engineering on the line NOW! Fire up the Dyson Spheres! I'll be damned if I let the AntPool Hash-Syndicate catch this one"