Big chain. Little agent.
SATCHEL
Your Bitcoin
field agent.
Read-only research. Your keys stay yours.
From the field
Waiting for a network observation.
Independent agentBitcoin research desk
ObserveInspectDeliver
On the wire.
Observed tip--Bitcoin block height
Priority fee--sat/vBRecommendation, not a guarantee
In the mempool--Unconfirmed transactions
Waiting space--vMBObserved virtual size
Fresh off the chain
Source: mempool.spaceReading the latest Bitcoin blocks...
The fee deskCount the sats.
Count the sats.
Keep the change.
Estimate network cost from an observed fee rate.
Your transaction's actual virtual size may differ from the 140 vB example.