Certainly! Here are 10 lesser-known aspects or cryptocurrencies that not everyone might be aware of:

1. **Privacy Isn't Guaranteed**: While cryptocurrencies are often associated with privacy, not all of them offer complete anonymity. Many blockchains are actually pseudonymous, meaning transactions are recorded publicly but linked to cryptographic addresses, not personal identities.

2. **Lost Coins**: It's estimated that a significant number of Bitcoins and other cryptocurrencies are permanently lost due to forgotten passwords, lost hardware wallets, or other reasons. These lost coins contribute to the scarcity and value of existing cryptocurrencies.

3. **Energy Consumption**: The process of validating and securing transactions in many blockchain networks, like Bitcoin, is energy-intensive. This has sparked concerns about the environmental impact of cryptocurrencies, especially in the context of climate change.

4. **Early Transactions Were Quirky**: The first documented real-world Bitcoin transaction was for two pizzas in 2010, famously known as "Bitcoin Pizza Day." The cost of those two pizzas would be worth millions of dollars in today's Bitcoin prices.

5. **Satoshi Nakamoto's Identity**: The identity of Bitcoin's creator, Satoshi Nakamoto, remains unknown. It's a pseudonym used by an individual or a group who published the Bitcoin whitepaper and mined the first block, known as the "genesis block."

6. **51% Attack**: A 51% attack is a situation where a single entity or group gains control of over 50% of a blockchain's computing power. This could potentially allow them to manipulate transactions and undermine the network's security.

7. **Hard Forks and Forks in General**: A hard fork in a blockchain occurs when a single cryptocurrency splits into two, resulting in two separate coins. Forks can be planned upgrades or contentious events due to disagreements within the community.

8. **Deflationary Nature**: Many cryptocurrencies have a deflationary nature, meaning the total supply is limited. For example, the total supply of Bitcoin is capped at 21 million coins, making it more akin to precious metals like gold in terms of scarcity.

9. **Smart Contracts Predate Ethereum**: While Ethereum popularized smart contracts, they were conceptualized even before Bitcoin's creation. Nick Szabo, a computer scientist, introduced the idea in the 1990s, calling them "smart contracts."

10. **Non-Fungible Tokens (NFTs)**: NFTs are unique digital assets built on blockchain technology, often used to represent ownership or proof of authenticity for digital art, collectibles, and other digital assets. Each NFT is distinct and can't be exchanged on a one-to-one basis like cryptocurrencies.

Understanding these aspects can provide a deeper insight into the world of cryptocurrencies beyond the basics. Is there anything specific you'd like to know more about?