Ethereum addresses are generated randomly and are composed of the following characters:
1. Lowercase letters a-z
2. Uppercase letters A-Z
3.
Numbers 0-9
4. The characters . _ and -.
An Ethereum address is 42 characters long.
The number of possible Ethereum addresses is 2^160, or 1.46 x 10^48.
NOTE: WARNING: Be aware that Ethereum addresses are not permanent and may change over time. Additionally, the number of Ethereum addresses is constantly increasing as new users join the network. As such, it is not possible to definitively identify how many Ethereum addresses exist at any given time.
This is a huge number, and it’s unlikely that even a fraction of this many addresses will ever be used.
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Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of fraud or third party interference. Ethereum is a public blockchain-based platform that uses the cryptocurrency ether to fuel its transactions. Ether is mined by computers around the world and then traded on decentralized exchanges.
As of September 2018, there are over 27,000 Ethereum nodes active around the world, with the vast majority of them (24,000) located in the US. The number of nodes is constantly increasing as more people begin to run them. Each node represents a single point of failure for the network and so the more nodes there are, the more resilient the network becomes.
Ethereum is a decentralized platform that runs smart contracts: applications that run exactly as programmed without any possibility of fraud or third party interference. In Ethereum, all transactions are public and recorded on a blockchain, a shared digital ledger. This gives developers the ability to create markets, store registries of debts or promises, move funds in accordance with instructions given long in the past (like a will or a futures contract) and many other things that have not been invented yet, all without a middleman or counterparty risk.
As of September 18, 2020, there were 10,363 Ethereum validators. This number has been steadily increasing since Ethereum launched in 2015. The vast majority of these validators are running on the Ethereum mainnet, but there are also a significant number of validators running on Ethereum testnets and private networks.
Ethereum dapps are decentralized applications that run on the Ethereum network. They are similar to traditional apps, but they are powered by Ethereum’s smart contracts. There are currently over 2,500 Ethereum dapps in existence.
