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Anchor a Document or File to the BCH Chain With Notary.Bitcoin.com
19.5.2019
In my last article, I explained how to prove ownership of a specific address by signing a message with a public and private key pair. That’s just one way of proving ownership and verifying a valid signature, as BCH users can also anchor a document to the chain using the Bitcoin Cash...
How to Prove Ownership With a Bitcoin Cash Address and Digital Signature
18.5.2019
Bitcoin is an amazing form of money and the technology Satoshi created has incredible potential. However, most people don’t realize that the blockchain not only allows for a great medium of exchange, but it also provides the means for creating notarized proofs. The following walkthrough aims...
‘Craig Is a Liar’ – Early Adopter Proves Ownership of Bitcoin Address Claimed by Craig Wright
17.5.2019
On May 16, an unknown person posted a signed message to social media concerning a bitcoin address that was used as evidence in the ongoing Kleiman v. Wright lawsuit. According to the message, which is verified to be the rightful owner of the address used in the Florida lawsuit, the address never...
How to Generate QR Codes for Crypto Payments
10.5.2019
Businesses and projects in the crypto space have an incentive to facilitate cryptocurrency payments for their customers and users. With QR codes, acquiring a recipient’s address is easy – all it takes is a quick scan with a smartphone. A platform called Cwaqrgen provides a tool...
The Whole Spreadsheets as Databases Thing is Pretty Cool
18.3.2019
A spreadsheet has always been a strong (if fairly literal) analogy for a database. A database has tables, which is like a single spreadsheet. Imagine a spreadsheet for tracking RSVPs for a wedding. Across the top, column titles like First Name, Last Name, Address, and Attending?. Those titles...
Object.fromEntries
9.11.2018
The Object object has been buffed with useful methods over the past few years. Object.keys, Object.values, Object.freeze, and Object.assign all address frequently desired functionality. One of the new Object methods is fromEntries, which accepts a Map or map-like array nesting and converts it...
Locate and identify website visitors by IP address
10.5.2018
(This is a sponsored post.)
Big thanks to ipstack for sponsoring CSS-Tricks this week!
Have you ever had the need to know the general location of a visitor of your website? You can get that information, without having to explicitly ask for it, by the user’s IP address. You’re just going to need...