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2026-10-15 16:53:16 UTC

thejohnnycrypto on Nostr: Picture a bike repair shop on a quiet street. A tune-up costs $40. The owner, call ...

Picture a bike repair shop on a quiet street. A tune-up costs $40. The owner, call her Dana, pays about $1.20 of that to the card company every time someone taps a card. That fee is small. Over a year of tune-ups it adds up to a new set of tools.

One morning a customer asks if he can pay in bitcoin. Bitcoin is money that moves on the internet without a bank in the middle. Most small payments now ride on the Lightning network, a faster layer on top of bitcoin that settles a payment in a few seconds for a fraction of a cent.

I like this story because Dana does not care about any of that yet. She cares about three things. Will the payment land while the customer is standing at the counter? Can she give money back if the brakes still squeak? Will her bookkeeper understand the entry at the end of the month?

Those three questions decide more shops than any price chart. If the payment fails once in front of a line of customers, she turns the feature off. If a refund means chasing the customer for a new invoice, she gets nervous. An invoice here is just a payment request, a code the customer scans. If the books show a number in sats that changes every day, her bookkeeper calls her. Sats are the small units bitcoin is counted in.

Each of those has an answer today. A payment app can show the price in dollars and convert it right away, so the books show $40. A refund is a new payment going the other way. A failed payment just means she asks for a card instead.

Now the case against. Most of her customers will never ask. A feature used twice a year is a feature she will forget how to use. The fee savings on two tune-ups is $2.40, which will not change her life.

This is how I would know I am wrong. If a shop like Dana's turns it on and after twelve months fewer than one sale in a hundred comes in as bitcoin, the small merchant case is weaker than I believe.

I still think it is worth turning on. The first person who asks is usually the one who tells ten friends where he spent his sats. Bitcoin grows one counter at a time.

if this changed how you see a checkout counter, Zap ⚡