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blockchain technologies

To get a blockchain we create a "block" containing a listing of accounts and then we chain the blocks together. The first block is called the genesis block. After the genesis block, the next (newer) block references the previous block, and so on, and so on, making a chain of blocks.

Importantly, the integrity of the references is protected by cryptography, making the whole chain of blocks immutable to the extent that the design of the blockchain's software is secure.

How does blockchain technology aid people and businesses?

The data on the blockchain are immutable and public. The software that controls the blockchain is on peer-to-peer networks, so it is decentralized.

As a result of these features (and others) people are able transfer value relatively quickly, relatively cheaply, and without centralized entities.

Furthermore, software programs stored on the blockchain (called smart contracts) provide new services.

Double-Spending Problem

One of the fundamental problems that Bitcoin solved is called the double-spending problem. The Bitcoin system is designed to prevent a person from spending the same bitcoin twice.

Bitcoin was revolutionary because it showed how blockchain technologies can come to consensus about the current state of the accounts maintained on the blockchain. Since Bitcoin was released, several consensus models have been developed to solve the double-spending problem.

However, it is worthwhile to note that the system can be hacked. See: 51% attack.

Last Mile Problem

Costless verification.

Summary

Technologies are disrupting.

blockchain technology

• Bitcoin

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	DEXs,
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Considering Blockchain Technologies for the freeradiantbunny webapp

The webapp freeradiantbunny is an open source software project dedicated to helping gardeners create garden maps and lists of plants.

The webapp freeradiantbunny is a kind of inquiring system for gardeners. The system allows us to ask questions about our gardens.

The webapp freeradiantbunny is also a kind of decision support system. We can use it to help us plan the gardens.

With these goals in mind, we explore how blockchain technologies and cryptocurrencies may be useful.

Using blockchain technologies within the webapp freeradiantbunny may allow gardeners to more effectively interact with seed catalogs, plant information, temperature sensors in the garden, and with expert information.

So, to help us with these gardening-based Use Cases, this blog considers blockchain technologies.

Where Does One Start to Explain Blockchain Technologies?

On this blog we approach the many technologies that have been created since the Bitcoin project started the cryptocurrencies revolution. We explore blockchain from the perspective of gardeners and our open source garden-mapping webapp.

Here is a list that introduces several main ideas that we find should be highlighted:

	Bitcoin is a peer-to-peer electronic cash system, and a revolution in Finance that began with the publishing of the bitcoin paper in 2008.
	A peer-to-peer network of computers all using the same software reaches consensus about the current state of an immutable ledger called a blockchain.
	The ledger is totally out in the open and can be viewed using explorers. Owners send, receive, and view balances using software wallets.
	In the wake of Bitcoin, was the creation of hundreds of cryptocurrencies.
	Software code is stored on the blockchain, enabling decentralized applications often called smart contracts. These apps are public and can be thought of as programmable cash.