welcome to steemit platform, my friend note that, Steemit is built on the Steem blockchain, is similar to the Bitcoin blockchain, but is separate from it. Another name for blockchains is distributed ledger technology (DLT). This means that it’s a distributed database — lots of people hold copies of it that talk to each other in order to stay up to date. Records are added to the blockchain in sequential order. These records, or blocks, once added to the database, or chain, can not be changed. They are immutable — read-only.
thank you for your understanding