defi-minimal VS synthetix

I recommend using the freecodecamp course(1st one on the list), then going through solidity by examples and the main dedi use cases on https://github.com/smartcontractkit/defi-minimal (if you are interested in more theory, there is https://defi-learning.org/f22) and common design patterns on https://fravoll.github.io/solidity-patterns/

For this new contract I've chosen to use the logic of Synthetix's StakingRewards for ERC20 staking which allows the distribution of a fixed amount of ERC20 tokens in a fixed period, with dynamic APRs that depend on how many ERC721 tokens are staked in the contract at each given point in time.

Yea. I wonder if buying a tokenised synthetic stock then would be the same eg: https://synthetix.io/

Visit https://synthetix.io then click on Staking takes you to

Synthetix has been running a bucket shop for a long time. They added stocks through Kwenta but got spooked and removed them.

https://synthetix.io/

Docs for Synthetix is unfortunately the code repo itself, starting with interface here

Looking through the Etherscan transactions for Serum and Jump Trading, I came across a new name - Synthetix.

I came across a new name from this list- Synthetix (website link)

Derivatives Marketplace - it could be something like what https://aperture.finance/ and https://www.mirror.finance/ had built before on the TERRA chain (currently on AVAX and coming soon to SOL) where you can buy STOCK DERIVATIVES or something like what https://synthetix.io/ does.

you guys are not up to date, check out synthetix.io, a lot of synthetics exist on the blockchain with pegged tokens. Obviously a true GME token backed by GME can exist and will be your tokens but it won't stop people from trading GME pegged tokens in a synthetic manner preventing price discovery

SNX, the token staked in the Synthetix system to produce synthetic assets;