You have: Characters or words that look to you like they might be related to crypto.
You get: The answer to what kind of cryptocurrency data it might be (like a wallet address, a private key, a transaction ID, or a mnemonic phrase), if it is valid at all.

The tool primarily checks the format of the data, but whenever possible, it also verifies the mathematical checksums behind the scenes to ensure it is actually valid. You can paste any amount of data separated in any way, the calculator is smart and will understand it.