What is Ethereum merge?

Ethereum Merge is a move towards sustainability in the crypto-currency industry. What's the World Economic Forum doing to accelerate action on Blockchain? Ethereum is about to switch blockchain verification systems from Proof-of-Work to the more energy-efficient Proof-of-Stake.

What's the difference between a bitcoin and Ethereum key-pair?

I've been reading the requirements for bitcoin key-pairs and Ethereum key-pairs. Their sizes are different, more specifically a public key for the bitcoin protocol is 65 bytes (or 33 bytes compressed) whereas the public key on ethereum is 64 bytes. The above code does not work for an Ethereum key-pair.

How to use metamask to encrypt and decrypt user messages?

My application is using Metamask to encrypt and decrypt user messages using sigUtil.encrypt / eth_decrypt Whenever the application requires the user to decrypt a message it will present the user with a Metamask dialog asking them to allow the message to be decrypted. Let's say the application needs to decrypt 200 messages all at once.

How much economic security will Ethereum have today?

With Proof of Stake [the system Ethereum is transitioning to in the merge], we will have about $20 billion in economic security today – and this is a number I expect will grow dramatically.