# Jul '21 CoinFlex
## Tech improvements since last chat
- Websocket
-- rate limits? latency? colocation?
- REST improvements
-- much more readable, fuller functionality
https://docs.coinflex.com/#change-log
## Normal Trading Products
- Spot
- Deliverable Perps
- Repo market
-- Explain to people the interworking of the spot market, repo and deliverable perpetuals
- Spreads
- Futures Margin system: Multicollateral
-- Home currency USD = USDC (is 'real' fiat supported?)
-- how non-USDC collateral gets converted (docs say spot market orders)
https://coinflex.com/support/flexible-collateral-management/
- Plans for spot-margin to borrow spot assets?
- How is liquidity attracted to the growing list of products? Some of the rates contracts for example have enormous spreads
- What happened to the binary options platform? Launched and then binned?
## Other products
- flexUSD -- how does it work? compounding, interest-bearing stablecoin
https://coinflex.com/support/4-1-1-flexusd-yield-on-yield/
- notes and notes.finance -- how do the deals with marketmakers work, what to do if no repayments etc
-- not much in docs on this but there are multiple notes issued and traded on curve-like system
- AMM -- unleverd and leveraged -- projects liquidity from the pool onto the books, comparable to uniswap v3
https://coinflex.com/amm
## FLEX Coin
- what is the utility?
## other q's
- what do you think of the recent cap at 20x by FTX?
- BCH thoughts
- HK