Steem is an open source blockchain protocol that can store social information and distribute tokens based on the Proof-of-Brain algorithm. As the blockchain with the fastest transaction speed and large transaction volume in the world, Steem can support multiple blockchain protocols for user-oriented applications, including busy.org, d.tube, dlive.io, steemit.com, dsound. audio, etc.
The Steem blockchain creates opportunities for entrepreneurs by providing a scalable blockchain protocol. Their applications can use this protocol to store user content, social information, account information, JSON metadata, etc., and at the same time authorize these users to earn Cryptocurrency token called STEEM) in exchange for sharing that information. STEEM tokens have best-in-class properties such as three-second transfers and no fees, thanks to Steem's three-second module and Delegated-of-Stake algorithm.
With the upcoming release of the Smart Media Token protocol (SMT), the community will add functionality to the Steem blockchain, allowing any entrepreneur, developer or community builder to launch their own customizable STEEM on top of the Steem blockchain Sample tokens and specific smart contracts for ICOs, automated market makers, autonomous token distribution, founder tokens, etc. SMT will take full advantage of the speed and scalability of the Steem blockchain, enabling entrepreneurs to leverage all the lessons learned from Steem and steemit.com to tokenize their platforms and channel the value of their tokens.
Steem Coin (STEEM) can be used to start "Steem Power", exchange SBD in the internal market, withdraw orders, trade BTC or other digital tokens, and purchase items through third-party stores.

1. Steem blockchain

The Steem blockchain is a publicly accessible distributed database that records all posts and votes and distributes rewards across the network. All text content and voting data are stored here, and all reward calculations and payouts are performed there.

2. The difference between Steem and Steemit

Steem is the name of the blockchain that stores all data and transactions and handles all events that occur. STEEM is also the name of the system value token (currency).
Steemit is a front-end web interface for interacting with the blockchain and viewing blockchain data. Steemit, Inc. is also the name of the company that owns and operates the steemit.com website.

3. What is the difference between Steem and Bitcoin?

On a technical level, the two networks rely on the same model of blockchain, but are based on different technologies and code bases. Steem is based on a new state-of-the-art blockchain technology called Graphene, which uses "witnesses" instead of "miners" to produce blocks.
The "Delegated Proof-of-Stake" model using witnesses instead of miners can improve the efficiency of block production. With BTC, 100% of new coins created are distributed to block producers (miners). With the Steem blockchain, only 10% of new coins are paid out to block producers (witnesses). 90% of other new STEEM coins are awarded to content producers, curators and Steem Power holders.

Related Links:

https://steem.com/faq/#how-is-steem-different-from-bitcoin