The question, unfortunately, is still relevant ...

Our company is looking for software to organize a cryptocurrency exchange - not a simple exchanger, but an cryptocurrency stock exchange

We are considering any options for purchasing software, but your software should provide the following opportunities:

1. Placement of the software and all client wallets (both hot and cold) only on our servers.
2. The possibility of making trades in different pairs of cryptocurrency (unlimited quantity).
3. The ability to trade of arbitrary tokens (both ours and others).
4. Ability to organize margin trading.
5. Availability (or availability of integrating) of trading tools similar to TickTrader or MetaTrader5 .
6. The possibility of attracting liquidity to the stock exchange by integration with liquidity aggregation sites.
7. Availability of all instruments for connecting external counterparties (payment agents, Banks, card issuers, etc.)
8. The possibility to realize on your software a geographically distributed fault-tolerant solution for a cryptocurrency stock exchange. We want to place servers step-by-step in several data centers, and if the servers fails in one of the data centers, the trading must continue on servers in another data center.
9. You give us the source code of the software - we want to have opportunity to modify it independently in future (this requirement is very desirable, but not 100% mandatory).

Waiting for your offers!