Ordinals allowed attaching pieces of data known as “inscriptions” to satoshis, the smallest denomination of BTC – effectively allowing for non-fungible tokens (NFTs) to be minted and traded on Bitcoin, an activity that was previously only available on other blockchains. Soon afterward, another developer, Domo, unveiled “BRC-20” – a standard for creating fungible, or tradable, tokens, another feature that hadn’t previously existed on Bitcoin.