Ordinals And Runes
Ordinals and Runes are Bitcoin protocols that create NFTs, tokens, and extra transaction demand that can affect mining fees.
Definition
Ordinals and Runes are Bitcoin protocols that use ordinary Bitcoin transactions for things other than simple payments. Ordinals assign an ordering to individual satoshis, the smallest units of bitcoin, and are commonly used with inscriptions: pieces of data such as images, text, or metadata written into transaction witness data. Runes is a token protocol for issuing and moving fungible assets on Bitcoin through the UTXO model.
For miners, the important point is not whether a transaction represents a payment, a collectible, or a token transfer. The important point is that it consumes block space and pays a fee. When Ordinals or Runes activity is heavy, users may bid against each other for confirmation, pushing up transaction fees and changing the fee portion of miner revenue.
How It Works
Ordinals rely on a convention for tracking satoshis as they move through Bitcoin transactions. An inscription places content into a transaction, often using witness data enabled by Segregated Witness and made more practical by Taproot. A small text inscription and a large image inscription are very different to a user, but to a miner they are both transactions competing for the same limited block capacity.
Runes works differently. It does not try to attach a unique artifact to a specific satoshi. Instead, it records token actions in Bitcoin transactions: a Rune can be etched, minted, and transferred. Because Runes uses Bitcoin’s UTXO structure, it was designed to avoid some of the clutter associated with earlier Bitcoin token experiments that created many low-value outputs.
Neither protocol changes proof of work. Miners still assemble candidate blocks, hash block headers, and collect the block subsidy plus fees. The change happens upstream in the mempool. If a new mint, popular inscription collection, or token trading rush appears, mining pools may see a deeper stack of fee-paying transactions to choose from.
Why It Matters
Ordinals and Runes made Bitcoin block space feel more like scarce real estate. A block can include only so much transaction data. A user consolidating coins, an exchange batching withdrawals, an artist publishing an inscription, and a trader moving a Rune may all be trying to enter the same next few blocks.
That competition can help miners. As each halving reduces the block subsidy, fees become more important to long-term mining economics. Spikes in inscription or token activity can produce blocks where fees are a meaningful share of the total block reward.
The tradeoff is that higher fees can price out lower-value payments. A user sending a small amount of bitcoin may not care that the fee market is being driven by a token mint; they only see that confirmation became more expensive. That is why Ordinals and Runes remain controversial. Supporters see new demand for Bitcoin security. Critics see non-payment activity crowding out ordinary transfers.
Miners usually respond in a simpler way: valid transactions with better fee rates rise to the top of the block template. Ordinals and Runes are therefore best understood as extra sources of demand inside Bitcoin’s existing fee market, not as separate mining systems.