Generating a Bitcoin Address QR code with current USD price embedded?


Due to how much the USD/BTC conversion rate can fluctuate, even within a small window of time, I don't think this is a good idea.

The problem is that you are now listing two separate prices in one QR code. Yes, they were the same at the time of generation, but that won't last. When payment is received, which price is the real one? The one in bitcoin, or the one in dollars?

If you are receiving payment in bitcoin, then it's best you simply list your price in bitcoin. It is usually the responsibility of wallet software to show the user any conversion to USD, and that depends on which exchange they are using as their oracle. The user may not have access to the same exchange as you, so bitcoin may be more or less expensive to them in USD. It's best to leave that conversion rate configuration up to your users, within their own wallet...

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I use GoogleApi to generate QR codes for bitcoin and altcoins

The syntax is a bit tricky since the "data" portion (chl=*), is itself urlencoded (use %26 instead of &):|2&cht=qr&chl=bitcoin:1MoLoCh1srp6jjQgPmwSf5Be5PU98NJHgx?

You can make a QR code for other altcoins by changing the chl=bitcoin:1(...) to chl=litecoin:L(...), etc

I made a multi-coin QR code generator for my website with all the available options:

The only thing Google is missing, is to verify the address is legitimate (and not a typo), which my api handles...

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MyCelium introduced the Swish offering - which is nice but it appears it could be simpler and uncentralized.

I wanted to throw an idea out there and see if I am missing anything.

To me, there seems to be some low hanging fruit for ordering food and drinks in a bar / restaurant setting that does not require a remote service (although one could be incorporated if you really wanted).

This could be extremely efficient - and possibly save on labor costs too if enough people use it.

Say I want to order a hamburger only. I scan the QR code for the hamburger (which is unique for my table), pay - and the kitchen automatically gets a signal that they need to deliver a hamburger to table 2. I eat, and leave. No need for me to pay (I've already done so!).

If I also wanted a large fries and a large coke, I would scan those QR codes, pay, and the waiter would deliver them to my table. Very quick.

Of course, this requires each table to have a unique menu...

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Bitcoin is the currency of the Internet: a distributed, worldwide, decentralized digital money. Unlike traditional currencies such as dollars, bitcoins are issued and managed without any central authority whatsoever: there is no government, company, or bank in charge of Bitcoin. As such, it is more resistant to wild inflation and corrupt banks. With Bitcoin, you can be your own bank.

If you are new to Bitcoin, check out We Use Coins and You can also explore the Bitcoin Wiki:

How to buy bitcoins worldwide
Buying Reddit Gold with bitcoin

Will I earn money by mining bitcoin?

Security guide for beginners - (WIP)

Community guidelines

Do not use URL shortening services: always submit the real link. Begging/asking for bitcoins is absolutely not allowed, no matter how badly you need the bitcoins. Only requests for donations to large, recognized charities are allowed, and only if there is good reason to believe that the person...
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It has been suggested that this article is merged with Merchant Howto.

This guide is intended for small business owners who wish to help promote Bitcoin by accepting it as payment for goods and services. It's written with the assumption that you operate a regular business that sells goods or services for regular national currency such as dollars, and that you wish to accept Bitcoin as another legal way to pay, and that you intend to pay taxes on your Bitcoin income just like any other income.

With Bitcoin being touted as a way to conduct anonymous transactions and as way to compete with government currency, many small business owners wonder what's the right way to accept and account Bitcoin, or if it's legal or ethical, or whether and how they should pay taxes on income received through Bitcoin.

Bitcoin has been formally recognized by some governments and authorities as a "currency", but in practice, Bitcoin is no different than accepting payment in other forms...

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As a virtual crypto currency, Bitcoin has definitely started to become more and more popular. It is an alternative to PayPal and credit cards as a form of payment in many websites now. Without using a bank or centralized service, you can send or receive money with minimal fees compared to traditional payment methods.

In this post, we have collected some of the Best Bitcoin PHP Scripts and Plugins for you to integrate Bitcoin in your own website.

Bitcoin Payments for WooCommerce (Free)

This is a WordPress plugin that allows to accept bitcoins at WooCommerce-powered online stores.


BitValue – Bitcoin PHP Script

BitValue is an online application built in PHP, jQuery and Bootstrap for anyone who like Bitcoin. It is super easy to get your own site online in a very short time. Great for social connections, marketing and selling ad space.

View Demo More Info

Bitcoin & Litecoin Ticker Widget...

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