What does "generate" mean when it appears as a transaction's type? What is &quot;generate&quot; as a bitcoin transaction type? Why are &quot;generate&quot; transactions labeled as &quot;immature&quot; for 100 blocks? Is this type of Bitcoin transaction spendable?
&quot;Generate&quot; transactions are coinbase transactions. These are a special type of transaction that is included in a block by a miner. They can not exist outside of a block. They generate new coins to an address configured by the miner. Those coins can not be spent until they have 100 confirmations. The reason for this is to prevent a messy scenario in which a block becomes disconnected or is no longer in the most-work valid chain, meaning the newly generated coins do not exist on the ledger any more.