Pedro Arantesrose
ArticlesContactNow

Proof of Work

It is a form of cryptography zero-knowledge proof that one part, the prover, proves to others, the verifies, that they used some amount of computational resources to complete some task.
#bitcoin
Zettelkasten, March 07, 2021 (changes)

Notes

  • It is a form of cryptography zero-knowledge proof that one part, the prover, proves to others, the verifies, that they used some amount of computational resources to complete some task.

  • Cynthia Dwork and Moni Namor invented it in 1993 to deter denial-of-service attacks and other service abuses such as spam.

    • It costs some effort for the attacker to make a request. Thus, it becomes inviable to send a large number of requests in a short period.
  • It's asymmetric:

    • It must be hard enough to provers finish the work.
    • It must be easy to validate the prover's result.
  • Bitcoin popularized it.

    • Miners spend some computational resources to append blocks on the blockchain.

Questions

  • It is a cryptography zero-knowledge. May we compare this to the gold miners, who need primarily physical force to find gold?

  • What is the difference between CAPTCHA and proof of work?

References

RecommendationsDo you want to see all posts instead?
No B.S. Time Management for Entrepreneurs
This book is expressively for entrepreneurs and business owners who wear many hats—those who can't resist piling more responsibility onto his own shoulders, who has more great ideas that time and resources to take advantage of them, who runs (not walks) through each day. Your time is incredibly valuable to you, and you are constantly 'running out of it.'
Books, April 04, 2021
Reading time: 21 minutes
Asymmetric Opportunity
An asymmetric opportunity is one in which the upside is much more significant than the downside.
Zettelkasten, July 22, 2021
Smart Contracts
Smart contracts are computer programs stored on a blockchain that will be executed when predetermined conditions are satisfied.
Zettelkasten, April 19, 2021
Accountability Psychological Trigger
You need accountability to build up credibility. So you have to do things under your name as much as possible, with risky.
Zettelkasten, August 18, 2021
Mental Models
Mental models are frameworks, worldviews, representations, or explanations of how something works. They're how we understand the world.
Zettelkasten, April 06, 2021
Purposeful Stupidity
"Citizen-saboteurs" learned those instructions to sabotage organizations or governments institutions.
Zettelkasten, September 19, 2021
Authority Psychological Trigger
People consider most the opinion of ones they believe to be better at something, whether because of hierarchy or because the person truly knows about the subject, as a doctor.
Zettelkasten, August 18, 2021

Newsletter

Every Tuesday, I publish my most recent readings and thoughts. Subscribe to my newsletter if you want to follow topics about #startups, #mental-models, #cryptocurrencies, and more. You can also check my past issues on Revue.

By subscribing, you agree with Revue’s Terms and Privacy Policy