Hello everyone,welcome to my blog,in regard to professor @sapwood Homework task.Here is my submission. https://cdn.steemitimages.com/DQmPQuN98muzVqFJkuxd6xVrawuZMqKxVsZ6AfcGHh5zxiH/4i88GgaV8qiFU89taP2MgKXzwntUGAvkoQiKU7VxyD37q9aC4QdxiZ4CEFcSndJVLULcGxwMw44R8ovgsf3eDG4kw3jcoB22P9pzxyd23goRH58Ukyd2GYrKxr.png[sources from proof sapwood](sapwood) QUESTIONS # What is the difference between pow and pos? Advantage and disadvantages. Which one is better in scaling capacity examples https://cdn.steemitimages.com/DQmcZanrXSLKM9CprGp3tSsZ9i9GPsjLskqY8rTGgX2yD6a/32FTXiZsHoAW6noHJAD8gmN4tDsA3S3NgRnChMCfs6Zzu5sRohWowz2ap3DV79rJc6zQfLnvQ1yPN1wPDQQ4PbDCJR11ymrFeNn6T3NVTZH2ia6ugwrnzBqN5xqRDESmvua8uVmiJrF3NYEr.png THE DIFFERENCES BETWEEN POS & POW POS Simply means proof-of-stake while POW means proof-of-work. this are blockchain technology that functions with cryptocurrencies in different dynamic ways.

PROOF-OF-STAKE(POS) * Proof-of-stake(pos) is a centralized block technology,it is less secure than (pow) proof-of-work. * It was created as an alternative to proof of work which is the original consensus mechanism Blockchain technology. * Proof-of-work(pos) creates or validate new blocks to a chain and also confirm transactions * Proof-of-stake(pos) is less risky in terms of potential for miners to attack the network.

PROOF-OF-WORK (POW) * Proof-of-work(pow) is however a decentralize Blockchain,it distribute database that represents a ledger of transaction. * proof-of-work- functions with high security system which present counterfeit from tempering with the database * The system concepts,authenticate transactions without any third party involvement * Proof-of-work, provide solid mechanism consensus and preventing misuses. * Several blockchain are base on proof-of-work technology system for smooth sustainable transactions https://cdn.steemitimages.com/DQmcZanrXSLKM9CprGp3tSsZ9i9GPsjLskqY8rTGgX2yD6a/32FTXiZsHoAW6noHJAD8gmN4tDsA3S3NgRnChMCfs6Zzu5sRohWowz2ap3DV79rJc6zQfLnvQ1yPN1wPDQQ4PbDCJR11ymrFeNn6T3NVTZH2ia6ugwrnzBqN5xqRDESmvua8uVmiJrF3NYEr.png --------------------------------------------------- ADVANTAGE AND DISADVANTAGE OF PROOF-OF-STAKE Advantage | Disadvantage ---------------- | ------------------ 1. Proof-of-stake is certainly most advanced than proof of work | 1. pos functions on a less security level making it easy for computer expertise counterfeit to temper with the database 2. The protocols of the proof-of-stake vary from case to case but the general concepts is the same | 2. pos technology system addresses mining power 3. Pos technology is the second most popular mechanism in terms of market capital of Blockchain network. | 3. Proof-of-stake powered blockchain networks are maintained by validators or creators. 4.proof-of-stake is a centralized technology Blockchain system | 4.it does not require a mining rig -------------------------------------------------------- ADVANTAGE AND DISADVANTAGE OF PROOF-OF-WORK --------------------------------------------------------- Advantage | Disadvantage --------------- | -------------------- 1. Proof-of-work requires huge amount of energy consumption for the computer power used by miners | 1. Proof-of-work centers on on a higher application capacities needed to resolute or map out issues,in establishing Blockchain transactions. 2. Proof-of-work render greater scalability and fasters transactions rate. | 2. Pow colligate cost likewise, preclude amount of people/individual from part-taking in a particular block. 3. Proof-of-work system technology is widely considered unsustainable as the energy consumption to mine Bitcoin, leaves a significant carbon footprint. | 3. The energy level or degree cost,related together in running and maintaining powerful computer system,requires massive amount of energy. 4. Proof-of-work have the quality of being restricted | In addition to all,proof-of-work, functions on a decentralized technology system,a peer to peer transaction that involved zero third parties. ----------------------------------------------------------- which is better in scaling capacity examples -------------------------------------------------------- In my humble self opinion, proof-of-work (pow) is better in scaling. Reasons is, pow functions or centers on a high security system that prevent any individual or third party from tempering into the database or transactions. > Several blockchain are base on proof-of-work examples; Ethereum,Litecoin, Bitcoin,Dogocoin cryptocurrencies. To validate transactions,maintain and build the entire Blockchain on crypto-coin and crypto-tokens. Conclusion

Bitcoin the largest crypto currencies runs with proof-of-work(pow) rather than proof-of-stake, because of the massive security and networks making it hard for hackers to gain access into the database system. > This is my understanding in this homework task. # thank you for your time. Best regards Much love @sapwood