Ordinals

Ordinals is a numbering scheme, introduced by Casey Rodarmor in January 2023, that assigns every satoshi a unique serial number based on the order it was mined. Because there are roughly 2.1 quadrillion satoshis, each one gets an ordinal number from 0 upward. That number follows the sat as it moves between wallets, as long as nodes track inputs and outputs using a first-in-first-out rule. Ordinal theory requires no change to Bitcoin consensus; it is an interpretation layered on top of the existing UTXO set.

How sats get their numbers

Each satoshi is created in a specific block by a specific coinbase transaction, so the mining order gives every sat a deterministic identity. Wallets that support ordinal theory can locate a particular sat, label it as "rare," and move it deliberately. This is what makes it possible to treat individual sats as collectible or to attach data to them.

Why it matters for sovereignty

Ordinals reignited a long debate about what belongs on the base chain. Supporters see permissionless data as a feature of Bitcoin's neutrality; critics point to fee-market pressure and block-space competition with monetary transactions. D-Central takes a neutral, technical view: ordinal theory is a real property of how Bitcoin already works, and understanding it helps operators reason about mempool dynamics and fee spikes that affect mining revenue.

Ordinals is the foundation for Inscriptions and the BRC-20 token standard. For the protocol's authoritative description, see the ordinal theory handbook maintained by its author.