• No, that is not possible. If any changes are needed, the organisation just needs to delete the information from the other blocks. Data must be handled with extreme caution while utilising this strategy for no other reason than this.
• All blockchains work on the same principle: data is stored in blocks that are linked together in a chain. The content of each block in the blockchain is encrypted, and each subsequent block saves its content by referencing the preceding block.
• This means that once data is written in one of these blocks, it cannot be changed (or deleted) unless all encrypted blocks after it are also changed at the same time. Because tampering with bits of a blockchain after it has been written will change not only that piece of data but all subsequent ones, using this method maintains the security of the stored data.
• To change or delete any of the existing entries, you'd have to change every previous entry as well. Getting access to the private keys belonging to the account that created the blockchain is the sole way to edit or erase any data on it. This system ensures that only the owner of a private key has the ability to change their data, and even then, they must obtain a majority of votes to do so.

Read More: How are cryptos different from blockchain?