Highlights of the week

1. $UNI releases version 4.

2. $MATIC announces Polygon 2.0 upgrade.

3. $BNB launches $BTC mining cloud services amid SEC crackdown in the US

4. $BTC supply on exchanges drops to 5-year low

5. Bank of China issues first security token on $ETH.

6. $XRP partners with Central Bank of Colombia to explore blockchain usage.