This brings me back! During the second year of my bachelor's we had a group project on distributed systems, we basically had to create a blockchain with primecoin PoW, written in service oriented programming language developed at the university of Bologna called Jolie (https://www.jolie-lang.org/)
Quote from Wikipedia concerning Ofelimos: "At the IACR conference Crypto 2022 researchers presented a paper describing Ofelimos, a blockchain protocol with a consensus mechanism based on "proof of useful work" (PoUW). Rather than miners consuming energy in solving complex, but essentially useless, puzzles to validate transactions, Ofelimos achieves consensus while simultaneously providing a decentralized optimization problem solver. [...] The paper gives an example that implements a variant of WalkSAT, a local search algorithm to solve Boolean problems.|"
Chia uses a very memory-hard PoW system and is usually mined on SSDs.
I've seen a lot of "useful PoW" cryptocurrencies, but they tend to not pan out. For example Gridcoin is just a Proof-of-Stake cryptocurrency with a program that hands out GRC to BOINC contributors.
Though if you click on "Mkt Cap" and "All" time, you see that Primecoin had a market cap high in 2018-03-05 with USD 83.029M and on 2021-11-18 with 64.8764M.
Does anyone know other innovative PoW chains?
Wikipedia gives some ideas:
https://en.wikipedia.org/w/index.php?title=Proof_of_work&old...
https://en.wikipedia.org/w/index.php?title=Proof_of_work&old...
For example
* Cuckoo Cycle: https://docs.grin.mw/wiki/miscellaneous/cuckoo-cycle/
* The paper "Ofelimos: Combinatorial Optimization via Proof-of-Useful-Work A Provably Secure Blockchain Protocol": https://crypto.iacr.org/2022/papers/538804_1_En_12_Chapter_O...
Quote from Wikipedia concerning Ofelimos: "At the IACR conference Crypto 2022 researchers presented a paper describing Ofelimos, a blockchain protocol with a consensus mechanism based on "proof of useful work" (PoUW). Rather than miners consuming energy in solving complex, but essentially useless, puzzles to validate transactions, Ofelimos achieves consensus while simultaneously providing a decentralized optimization problem solver. [...] The paper gives an example that implements a variant of WalkSAT, a local search algorithm to solve Boolean problems.|"
Chia uses a very memory-hard PoW system and is usually mined on SSDs.
I've seen a lot of "useful PoW" cryptocurrencies, but they tend to not pan out. For example Gridcoin is just a Proof-of-Stake cryptocurrency with a program that hands out GRC to BOINC contributors.
[1] https://coinmarketcap.com/currencies/primecoin/