Shinobi Systems' Solana Proof of Stake + Proof of History Primer

The coding marathon resulted in proof of history, which Yakovenko has described as a clock for the blockchain. It allowed Solana to be superfast, time-stamping transactions as they happen. Coupled with proof of stake, it creates a faster, more efficient network than Etherum’s energy-intensive proof of work.

Satoshi Nakamoto’s invention is also a practical and novel solution to a problem in distributed computing, known as the “Byzantine Generals’ Problem.” Briefly, the problem consists of trying to get multiple participants without a leader to agree on a course of action by exchanging information over an unreliable and potentially compromised network.

... See more

The Bitcoin blockchain gives one answer. It is the most rigorous form of history yet known to man, a history that is technically and economically resistant to revision. Thanks to a combination of cryptographic primitives and financial incentives, it is very challenging to falsify the who, what, and when of transactions written to the Bitcoin blockc

... See more

Tutorial Systems of Web3: A great tutorial system for crypto would be one that teaches beginners how to safely purchase assets, rewards experimentation with different use-cases, allows easy visibility to all assets across wallets, while encouraging community-based interactions.

However, once a winning combination has been found, anyone can verify the block is valid by running the hash function just once. That makes a valid block something that requires an incredible amount of work to create but only a trivial amount of work to verify. The simple verification process is able to probabalistically prove the work was done, so

... See more

Strava, on the other hand, introduced an entirely new proof mechanism: Proof-of-physical-activity. By using your phone’s GPS sensor (or a 3rd-party fitness tracker), users can actually prove how much and fast they ran or cycled. In contrast to Instagram photos, Strava’s proof mechanism is a lot harder to fake (though there are exceptions).