Proof of work is not a consensus model, it's a method to elect a block author, an incentive mechanism designed to keep miners honest.
Consensus is the process through which the network agrees on state. Examples are Nakamoto consensus (e.g. Bitcoin), BFT (e.g. Tendermind) or GRANDPA+BABE (Polkadot).
Fractal builds compliance and identity products for the web and blockchain. We're already ahead of Telegram and Coinbase in identity provisioning and verification.
We're looking for ridiculously good senior engineers. The unicorn candidate will know full-stack web, AWS infra (docker/terraform for Fargate/ECS) and have blockchain familiarity. We work mostly with Ruby/Rails, JavaScript/React, and Go. Amazing engineering team full of A-players.
We built http://www.attmatr.com with a similar philosophy. The difference is we strive to actually be farm-to-table as we deliver to the customer's doorstep - and our platform caters to B2B too. We're only in Denmark at the moment but will soon expand abroad.
> I don't see how is this any different from any other signal that Google uses to prioritize sites.
«Oh, they're screwing up before, too? Then I guess it's alright»
> How does it prevent decentralization?
Because only a handful of companies can issue certificates.
Apologies, I haven't made myself clear with that idiotic of a snarky remark :) What I meant is that their actions in the past shouldn't be an excuse to their actions today.
The principles behind PageRank are based on unbiased reputation, and provide for a good ranking system (spammers aside). Whatever's thrown on top needs to be carefully considered not to enforce biases towards any group in particular.
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I hold a Masters in Informatics and Computing Engineering. Currently, I live in Berlin, where I lead the development team at Gruvi, the start-up I co-founded.
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The only special thing about Decimal and Base 10 is that we have 10 fingers (for the most part, exceptions exist). If we had 12, then 1/24th of a day would make sense, because it would be twice our then-normal Base 12 system. It is evolutionarily arbitrary.
base 12 (or 24) and base 60 are actually much nicer to work with mentally than 10.
10 divides by 1 5 and 10 so you can easily figure out halves and tenths thats about it.
12 divides by 1 2 3 4 6 and 12 so you can easily figure out halves, thirds, quarters, sixths, and twelths without much of an issue, less non terminating decimal nastyness.
60 is even better, as it divides by 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 and 60 you get a whole wealth of easy fractions, and easy mental division.
This is probably the reason why a lot of ancient societies had a preference for base 60 and base 12.
you can count to 12 on your fingers aswell, using your individual finger bones on one hand + your thumb as an index.
You can extend this system to count to 60 by using the 5 fingers of your other hand seqentially to represent each set of 12.
I need to add a time period to a time point far far far more often than I need to divide a time period into thirds, quarters, sixths and twelths. And dividing into quarters is not difficult in base 10 either, so you're basically down to chosing between pleasant time arithmetic for our current world or being able to easily divide thirds, sixths and twelths. I'd rather have the nice time arithmetic.
Consensus is the process through which the network agrees on state. Examples are Nakamoto consensus (e.g. Bitcoin), BFT (e.g. Tendermind) or GRANDPA+BABE (Polkadot).