@ -256,6 +256,7 @@ If Alice already has bitcoin in another wallet, she could choose to send that bi
* She can exchange some of her national currency (e.g., USD) on a cryptocurrency exchange.
* She can buy some from a friend, or an acquaintance from a Bitcoin meetup, in exchange for cash.
* She can find a _Bitcoin ATM_ in her area, which acts as a vending machine, selling bitcoin for cash.
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* She can offer her skills or a product she sells and accept payment in bitcoin.
* She can ask her employer or clients to pay her in bitcoin.
@ -273,17 +274,18 @@ To receive the bitcoin in her Eclair Lightning wallet, Alice will need to presen
To see a Bitcoin address on the Eclair wallet, Alice must swipe to the left column titled YOUR BITCOIN ADDRESS (see <<eclair-receive>>), where she will see a square barcode (called a _QR code_) and a string of letters and numbers below that.
The QR code contains the same string of letters and numbers shown below it, in an easy to scan format. This way, Alice doesn't have to type the Bitcoin address. In the screenshot (<<eclair-receive>>), we have purposely blurred both, to prevent readers from inadvertently sending bitcoin to this address.
[[eclair-receive]]
.Alice's bitcoin address, shown in Eclair
image::images/mtln_0204.png["Eclair bitcoin address QR code"]
The QR code contains the same string of letters and numbers as shown below it, in an easy to scan format. This way, Alice doesn't have to type the Bitcoin address. In the screenshot (<<eclair-receive>>), we have purposely blurred both, to prevent readers from inadvertently sending bitcoin to this address.
[NOTE]
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Both Bitcoin addresses and QR codes contain error detection information that prevents any typing or scanning errors from producing a "wrong" Bitcoin address. If there is a mistake in the address, any Bitcoin wallet will notice the error and refuse to accept the Bitcoin address as valid.
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Alice can take her mobile device to the ATM and show it to the built-in camera, as shown in <<bitcoin-atm-receive>>. After inserting some cash into the slot, she will receive bitcoin in Eclair!
[[bitcoin-atm-receive]]
@ -297,13 +299,12 @@ Alice will see the transaction from the ATM in the TRANSACTION HISTORY tab of th
The number of confirmations on a transaction is the number of blocks mined since (and inclusive of) the block that contained that transaction. Six confirmations is best practice, but different Lightning wallets can consider a channel open after any number of confirmations. Some wallets even scale up the number of expected confirmations by the monetary value of the channel.
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Although in this example Alice used an ATM to acquire her first bitcoin, the same basic concepts would apply even if she used one of the other methods in <<acquiring-bitcoin>>. For example, if Alice wanted to sell a product or provide a professional service in exchange for bitcoin, her customers could scan the Bitcoin address with their wallets and pay her in bitcoin.
Although in this example Alice used an ATM to acquire her first bitcoin, the same basic concepts would apply even if she used one of the other methods in <<acquiring-bitcoin>>. For example, if Alice wanted to sell a product or provide a professional service in exchange for bitcoin, her customers could scan the Bitcoin address with their wallets and pay her in bitcoin.
Similarly, if she billed a client for a service offered over the internet, Alice could send an email or instant message with the Bitcoin address or the QR code to her client, and they could paste or scan the information into a Bitcoin wallet to pay her.
Alice could even print the QR code and affix it to a sign and display it publicly to receive tips. For example, she could have a QR code affixed to her guitar and receive tips while performing on the street!footnote:[It is generally not advisable to reuse the same Bitcoin address for multiple payments because all Bitcoin transactions are public.
kristen@oreilly.com
3 years ago