Bitcoin Ordinals Explained — Digital Artifacts on the Base Layer

Bitcoin Ordinals Explained

In early 2023, Casey Rodarmor released the Ordinals protocol, and Bitcoin hasn't been the same since. Love them or hate them, Ordinals represent a fascinating use of Bitcoin's capabilities. Let me give you the technical breakdown and my honest opinion.

How Ordinals Work

Ordinals is actually two things:

1. Ordinal Theory: A numbering scheme that assigns a unique sequential number to every satoshi ever created
2. Inscriptions: A method to attach arbitrary data (images, text, code) to specific satoshis

Ordinal Theory

Every satoshi is numbered based on the order it was mined. The first satoshi mined in the genesis block is ordinal #0. Ordinal theory tracks these individual satoshis through transactions using a first-in-first-out (FIFO) convention. Certain satoshis are considered "rare" based on their relationship to Bitcoin events:

• Common: Any satoshi that's not the first of its block
• Uncommon: First satoshi of each block
• Rare: First satoshi of each difficulty adjustment period
• Epic: First satoshi of each halving epoch
• Legendary: First satoshi of each cycle (halving and difficulty adjustment coinciding)
• Mythic: The first satoshi ever (ordinal #0)

Inscriptions

Inscriptions embed data directly into Bitcoin transactions using the Taproot script-path spend. The data is placed in an OP_FALSE OP_IF ... OP_ENDIF envelope in the witness data. This means the data is on-chain, permanent, and uncensorable.

The witness discount (introduced by SegWit) means inscription data costs about 1/4 the fee of regular transaction data. This is why inscriptions are economically viable — they exploit the witness discount to store data cheaply.

The Block Space Debate

This is where things get contentious. Ordinals have caused sustained high fees on Bitcoin. Critics argue:

• Block space should be used for financial transactions, not JPEG storage
• Inscriptions price out legitimate users in developing countries
• The witness discount was never intended for data storage

Defenders argue:

• Bitcoin is a neutral protocol — anyone can use block space for any purpose
• Higher fees improve miner economics and long-term security
• The fee market is working as designed — highest bidder wins

My Take

I have mixed feelings. As someone building Bitcoin education in Sri Lanka, I've seen high fees directly hurt the people who need Bitcoin most. When a simple transfer costs $10+ in fees, it's not accessible.

But I also believe in Bitcoin's neutrality. The protocol doesn't (and shouldn't) discriminate based on transaction content. The solution isn't censorship — it's scaling via Lightning for everyday payments and letting the base layer be the base layer.

Ordinals accidentally proved that demand for Bitcoin block space is real and growing. Whether you like what that demand is being used for is a separate question. The fee market doesn't care about your opinions.

Follow the Ordinals debate and more on our blog.