Archives for cryptocurrencies
Read Only vs. Spend Transactions
Read Only Transactions Cost no money. They are executed against your local node only. Transactions that modify state cost money (gas). These need to be transmitted (broadcast) to the entire…
Smart Contracts and Sensitive Data
Public Networks A public network is a network that ANYONE can join. No permission is needed (permissionless public network). An example is the ethereum main network. Permissioned Public Networks Permissions…
Top World Assets – Gold, Bitcoin, Apple, Microsoft…Ranked
Ranking of assets by total capitalization
Selling and withdrawing BTC without any commission
Coinbase will charge you for withdrawing your btc (or any crypto). That's an insane amount. Coinbase PRO will charge you ZERO percent commission. Simply set up your bank details within…
Bitcoin Wallet API Programming
The bitcoin wallet is your entry door into the bitcoin network. This post discusses different ways you can write your own program to interact with the live bitcoin blockchain (known…
Bitcoin wallet basics
This short post contains common misconceptions around what is in a wallet, how does a wallet differ from an address and what exactly goes into creating an address. This is…
Bitcoin Cash
Cup of Coffee with BTC? The transaction issue has divided the Bitcoin community into two groups. One group claims that Bitcoin was never designed to be a “cup of coffee”…
Running a full node (BookKeeping) versus Mining
Running a Full Node Running a node is just listening for other nodes to pass you data, checking that its valid, and passing it in further. So a peer…
Painful Fiat Currency
When the crypto markets took a nose-dive, I felt it was a good time to put some cash in. As I learnt, traditional banks are still slow as molasses…I started…
Generate a BTC address from a passphrase
Here’s something fun to try. Pick a simple passphrase – sausage$ echo -n 'sausage' | sha256sum 30caae2fcb7c34ecadfddc45e0a27e9103bd7cfc87730d7818cc096b1266a683 - Load up bitaddress and paste that private key into the 'wallet details'…