Blockchain - Network & Mining
Here is what happens in the network as a result of the steps described above
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To obtain services from a third party who advertises on the network, one must first create a transaction (message).
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The number of senders (buyers) and receivers (sellers) could increase over time.
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The network broadcasts all transactions to all nodes. A given transaction does not have to reach every node.
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Note that each node creates a block from the new transactions. The set of transactions in each block is independent of the set in other blocks, and will naturally be different. It doesn't matter; the system ensures that every transaction broadcast on the network gets included in a block within a reasonable amount of time. As a reward for the node's efforts, the sender usually offers a certain amount of bitcoins to the miner. Those with higher incentives can be given priority for inclusion in the block by the miner.
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The node now searches for the proof-of-work for its assembled block.
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A node broadcasts the assembled block on the network when it finds a proof-of-work.
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Upon receiving the new block, the nodes will verify that all transactions are valid and not already spent before accepting it.
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If the block is accepted as valid, the node which is working on its own new block must reassemble the transactions in its block to ensure that the transactions are not duplicated. In order to find the proof-of-work for the newly created block, the node will take the hash of the accepted block as the previous hash.
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In the same way, the blockchain continues to grow.
As we have seen how the entire system works, let me describe some of the side effects and how to resolve them.