The Ordinals Protocol is an innovation that allows inscriptions of digital content, such as images, text, and more, directly on the Bitcoin blockchain. Each satoshi, the smallest unit of Bitcoin, can be uniquely identified and used to create NFT-like assets.

1. Functionality: It enables the attachment of data to individual satoshis, creating a new class of digital assets on Bitcoin.
2. Inscriptions: These are the contents of the ordinal NFTs, which can include any form of digital data.
3. Uniqueness: Each inscription is unique due to the ordinal numbering system of satoshis.

For more information on how Ordinals work and their significance in the Bitcoin ecosystem, refer to the detailed guides available online.