Here are five noteworthy news items from the crypto world over the past weekend:

1. A think tank recommends that Amazon include Bitcoin in its strategic reserves to enhance flexibility.

2. Coinbase users report account restrictions, possibly due to agreement violations, suspicious activity, or insufficient identity verification. Some users criticize the lack of customer support. Coinbase advises contacting customer support and adhering to agreements to reduce risks.

3. Trump nominates David Sachs to review past 'kill actions,' emphasizing the balance between supporting innovation and maintaining financial stability. This move is seen as an important step to promote the development of AI and cryptocurrency.

4. The Cardano Foundation's X account was hacked, posting false token information, which caused a drop in ADA prices. The account has now regained control, and users are advised to avoid clicking on suspicious links.

5. NFT sales reached $187 million in the first week of December, with Pudgy Penguins sales increasing by 346%.