Wow, sounds like STX and POX have some disclosures ahead of them.
   You know, POX is a jehadist attack on the Bitcoin Blockchain, according
   to Ken Griffin. "I wish all this passion and energy that went to crypto
   was directed towards making the United States stronger," he said.
   [1]https://www.coindesk.com/business/2023/03/21/crypto-exchange-okcoin-
   suspends-trading-of-miami-and-nyc-citycoins/?outputType=amp
   Crypto exchange OKCoin has suspended the trading of two citycoins,
   MiamiCoin and NYCCoin, as of March 16, citing limited liquidity as the
   reason for the decision.
   “Limited liquidity for these coins on our platform has created the
   possibility of price manipulation and fraudulent activity,” OKCoin
   wrote in a blog post. “While none of these risks have occurred, we
   wanted to get ahead of any possible misconduct.”
   The exchange will resume the trading of those coins once the
   “unexpected” low liquidity is solved. Until then, holders can continue
   to keep their coins on the exchange or move them to a decentralized
   platform.
   OKCoin, a globally licensed exchange headquartered in San Francisco,
   was the only centralized exchange that offered citycoins, according to
   the blog post.
   Both MiamiCoin and NYCCoin are developed by CityCoins, which enables
   citizens a way to generate crypto-based revenue for themselves and the
   cities where they live.
   Miami Mayor Francis Suarez was a particularly strong proponent of
   MiamiCoin in its early days, touting the possibility to generate a
   “bitcoin yield” for its citizens from its staking.
   OKCoin didn’t immediately respond to a request for comment from
   CoinDesk.
   Bloomberg previously reported on the news.

References

   1. https://www.coindesk.com/business/2023/03/21/crypto-exchange-okcoin-suspends-trading-of-miami-and-nyc-citycoins/?outputType=amp