Relationship between blockchain and bitcoin

The relationship between blockchain and bitcoin is simply that blockchain technology is the underlying technology of bitcoin. Bitcoin is the first application based on blockchain technology. Do you think these two sentences are a little contradictory.

In essence, it should be said that there is bitcoin first and then blockchain. Bitcoin is a digital cryptocurrency, which is calculated by the computer through specific attributes and stored in the computer. It is an invisible and intangible virtual currency. Blockchain is a decentralized distributed ledger database, which records all transaction records.

After bitcoin was created, it was quickly praised by people. After the price soared, people began to pay attention to the underlying technology behind the bitcoin system. In fact, the underlying technology of bitcoin is a distributed ledger, which has the characteristics of decentralization and tampering. Later, people found that this distributed ledger technology can be applied to many fields in real life, So he began to study the underlying technology of bitcoin, which was later named blockchain technology.