[This post is a note to self] – Blockchains are a type of ledger. Coin “miners” make calculations and add messages to the blockchain over time. The messages are hashed to protect the ordering and contents of messages. These hash ledgers are (allegedly!) tamper-resistant as the contents of later entries depend on the contents of earlier entries.
The novelty (in comparison to conventional dbs) is that it is a distributed system with no owner. This is what enthusiasts mean when they say that the blockchain is trustless: instead of central authority, like a bank, many miners compete to successfully write a new message to the blockchain. They do this by means of a proof-of-work algorithm, each with their own copy of the ledger.
In its most basic term, blockchain is a database of transactions that can be arranged and added to in “blocks”. Each block represents and identifies previous transactions using cryptographic functions, to create an unbroken chain of custody for goods or services that, importantly, cannot be modified.
Acting as a digital ledger, blockchain creates a verifiable audit trail that can be used for any transaction, and this is where its impact on sustainability begins to take shape. Blockchain can be implemented – and in some cases, is already used – across numerous sectors, from forestry and fisheries to carbon accounting and energy.
It is a self-governing, online database owned by no one and usable by everyone. Because the “chain” can’t be modified* it can immediately provide proof of purchase for any transaction, whether that be procurement of sustainable materials to purchasing renewable energy.
My hiatus from social media starts to carry fruit. I have recently looked at a tree for a substantial amount of time, without telling anyone about it.
But the first days were a bit brutal. I felt very isolated from a world that I had grown accustomed to, basically the world as I knew it over the past 5 years. But change is good. Anything that will get you out of your comfy zone is good. And if no-one else rattles your cage you have to do it yourself. I have since landed back on my feet, with the realisation that it’s OK if you can’t tell the world your every single thought every very moment.
Still, I miss a lot the interaction with the tweeps that have become truly dear to me. As odd as that might sound, because I hardly really know any of them. Or do I?
I think what I need to do is understand Twitter better itself, so I can go back in. As that world is what I am questioning the most at the moment. With an account of hundreds or thousands of tweeps, why do only ever the same twenty odd tweeps converse, and what the heck are all the others doing? Just reading in? Is everyone just a free content producer? To be sussed out by some marketing dude claiming to raise sales with their sekrit gruen? And wotabout the masters of SocMed, those who kinda create a connection, but in the end only to portray themselves in a better light, to make them look pro.