Terence Eden. He has a beard and is smiling.

Terence Eden’s Blog

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How I became Leonardo da Vinci on the Blockchain

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Yesterday at the CogX conference, I sat in a room listening to companies pitch their blockchain based startups. Because I hate myself. One in particular caught my attention. On the surface it seems to solve an important economic problem - art forgery and provenance. By putting your artwork on the "BitCoin Blockchain", Verisart will ✨hand wavy magic✨ increase the trust in art dealers and reduce f…

The complexity is the attraction - reflections on trying to use crypto

· 19 comments · 600 words · Viewed ~636 times


A fiver and some coins on a table.

A few weeks ago, someone wanted to send me some crypto. After spending months studying for a Blockchain exam, I usually avoid such things. But, hey, $20 is $20. So I signed up for a wallet, installed an extension, verified my credentials, saved a seed phrase, and - without too much technical fuss - had some crypto transferred to my account. So far, so good. Compared to a traditional financial…

Stop this digital ownership madness. NFTs are bullshit. And the stupid makes me angry.

· 19 comments · 900 words · Viewed ~17,388 times


Fraud alert warning signs.

(A hastily written and grumpy post.) Another day, another Blockchain Bullshit project. Someone "claimed" one of my Tweets and added it to the Blockchain. I'm not particularly happy about that. Nor am I happy with the hoops I had to jump through to contact the company and remove my work. You can read the whole sorry thread on Twitter. But, mostly, I'm unhappy with this whole scammy…

People Don't Want To Run Their Own Bank

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Photos of some porcelain piggy banks in the shape of pigs in clothes. Photo taken by William Warby.

When I was young, I had a piggy bank. A piggy bank is incredibly secure. It's fairly big - so it is hard to lose. It is brightly coloured - so you can find it easily. No one else can see how much money there is in there. The only way to get money out is to smash it - providing visible evidence if someone has robbed you. And smashing makes a noise - deterring would-be thieves. A piggy bank is…

Would a Blockchain have prevented LIBOR fraud?

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A flowchart guides users to determine if a blockchain is suitable: Starting with "Do you need a shared, consistent data store?", if NO, consider Email/Spreadsheets; if YES, ask "Does more than one entity need to contribute data?". If NO, consider Database (with auditing caveat); if YES, ask "Data records, once written, are never updated or deleted?". If NO, consider Database; if YES, ask "Sensitive identifiers WILL NOT be written to the data store?". If NO, consider Encrypted Database; if YES, ask "Are the entities with write access having a hard time deciding who should be in control of the data store?". If NO, consider Managed Database; if YES, ask "Do you want a tamperproof log of all writes to the data store?". If NO, consider Database; if YES, "You may have a useful Blockchain use case."

I am massively sceptical of any claims that Blockchain can be useful. I even took the Certified Blockchain Professional course so I could better understand the batshittery. At the risk of appearing on QTWTAIN, and seeking a papal indulgence from Betteridge, I think I might have stumbled on a retroactive use-case for Blockchain! First up, what is LIBOR and what was the scandal which led to…

Thinking of uses for BlockChains

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A tiny lego Storm Trooper eats a chocolate coin.

Kevin Kelly has written an insightful blog post about Class 1 / Class 2 Problems. I encourage you to read it. I agree with the thesis, but not the specific conclusion. Blockchain tech could unleash collaborations of several million members working on one project in real time, or orgs that are far more leaderless than today. How? Projects like the Linux Kernel already have thousands of…

Digital Scarcity is a Con

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Cover art for The Beatles' Sgt Pepper Album.

In the early days of the web, I used to go hunting for Beatles Bootlegs. I scoured forums, emailed dodgy geezers, and swapped poorly encoded RealAudio™ files on USENET. The Beatles had recently released their Anthology series, and us nerds were desperate to hear more unreleased goodies. Sure, there were rarities and out-takes, but we wanted more. We wanted Ultra Rare tracks. That one song no o…

A list of incredible BlockChain innovations which I would like funding for please

· 8 comments · 900 words · Viewed ~267 times


A tiny lego Storm Trooper eats a chocolate coin.

Dear the venture capitalists. I am a very charming white man and am prepared to drop out of university if you'll invest in these ideas. In the future, all your clothes are an NFT. "Wow! I love your blouse." "Thanks, here's a smart contract showing where I purchased it from. If you buy one, I get 10% of the sale price back in WoolworthsCoin." Applause Tokens™. A smart monitor under your t…

A weird solar blockchain thing - Rowan Energy

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Using Blockchain to encourage green energy is not viable due to the incredible amount of energy it takes to mine transactions.Our blockchain is a POA (proof of authority) blockchain that is designed to run on ultra lower powered devices. The devices are in the home of our supporters and take only about $10 per year to power.

I blog about my solar panels - probably a bit too much! Recently, a reader asked me if I'd heard of Rowan Energy's solar payback scheme - so I took a look into it. Here's how it works: Rowan installer a "miner" next to your solar inverter (the big box that turns DC from solar panels into AC for home use). The "miner" monitors how much electricity you produce and reports it back via your home…

Transferable Bank Accounts

· 5 comments · 400 words


A tiny lego Storm Trooper eats a chocolate coin.

Here's a (possibly) daft idea. What if you could pay for goods using a transferable bank account? Say you want to pay a friend some money. But you're not physically close enough to hand over cash. You create a new bank account with a unique username and password. As quickly and easily as getting a new email address. Couple of clicks and it is done. You move money from your main account into…

Certified Blockchain Professional - Module 1

· 4 comments · 2,050 words · Viewed ~303 times


Logo for the Certified Blockchain Professional.

As previously discussed, I'm doing the Certified Blockchain Professional course. It is self-directed learning, so I'm going through it at my own pace. In order to consolidate my learning, and help organise my thoughts, I'm blogging about my reflections on each module. These are mostly notes to myself - but I hope if you find something interesting (or incorrect) that you'll leave a comment. …

Security issues on ArtChain

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A website with a popup notification.

One of the problems with the BlockChain goldrush is that it attracts a lot of people who don't necessarily have the required technical skill to safely run a service. This in turn reduces trust in the ecosystem. I'd like to discuss ArtChain.info - "Certifying Art Using the Bitcoin Blockchain" - and the some of the security issues I found there. XSS This is one of those simple bugs which every…