4. Elon Musk contributed alot on Dogecoin which makes this meme coin reached a new All Time High.
A manipulator that first drew the attention of people when he bought Bitcoin and also made Tesla to accept bitcoin, not knowing he was only doing it for Doge. Later, he said what he knew before that bitcoin uses more energy that only coin that uses 1% of the energy bitcoin is using will be the coin Tesla will accept. I was not surprised to see Tesla accepted only Doge for payment now while there are other coins that uses less energy.
This may interest you about the false information people are claiming about bitcoin mining energy usage and carbon emission:
The bitcoin mining network, energy and carbon impact5. El Salvador came up with a new law to adopt bitcoin as legal tender.
A good move by El Salvador, if a country wants to use crypto, bitcoin remain the most decentralized.
6. Taproot was introduced, a new upgrade to bitcoin since the last upgrade in 2017 came into play, this opens door for BTC smart contracts.
To be more specific, it makes atomic swap possible, but that is not all, key aggregation making low fee possible if compared to other multisig payment, indistinguishable transaction on blockchain, also helps two people that opens a channel on lightning network to provide a single signature for closing channel, fee will be low in many cases while using it. Can make recovery process easier as N keys can be backup and only require M for recovery in M-of-N setup.
. 
