LOCAL REVIEW EDITION · 19 SEPTEMBER 2026Research scope & limitations ↗

THE RESEARCH DESK

Work through
the assumptions.

Two small tools for clearer questions. No live market data, wallet connections or automated safety ratings.

01 / HYPOTHETICAL ARITHMETIC

Bitcoin transaction fee model

Multiply a transaction’s virtual size by an assumed fee rate. The default is an example, not a current network quote.

Illustrative fee

700 satoshis · 0.00000700 BTC

Formula: ceil(vbytes × sat/vB). Rounded up to a whole satoshi; 100,000,000 satoshis = 1 BTC. At 140 vB and 5 sat/vB, the fee is 700 sats.

This does not estimate transaction size, predict confirmation time, account for package-policy requirements, or include exchange withdrawal charges. Actual signed size can differ from a wallet estimate. Check the transaction in a trusted wallet before signing.

Why there is no single mempool →
BIP141: transaction weight and virtual size ↗

02 / EVIDENCE, NOT A SCORE

Claim-review checklist

Check an item only when you have documented an answer and its source. A completed list can still describe an unacceptable risk.

Session-only. Nothing is saved or sent. Do not enter seed words, keys, addresses or private account information; there are no fields for them.

How to interpret evidence →