What are Bitcoin Ordinals?
Bitcoin Ordinals is a protocol that allows individual satoshis (SATs) in a Bitcoin blockchain to be assigned a unique identifier and transacted with extra data attached. (A satoshi is the smallest unit of bitcoin currency, and there are 100,000,000 satoshis in a single bitcoin.) The protocol, which is credited to Casey Rodarmor, effectively allows non-fungible tokens (NFTs) to be created directly on the Bitcoin blockchain. Bitcoin NFTs may also be referred to as Ordinal NFTs.