what are ordinals

Ordinals refer to a method of sequentially numbering the smallest units of Bitcoin, known as satoshis, on the Bitcoin mainnet. This approach involves embedding small files or text into transaction witness data, effectively binding and making each satoshi uniquely traceable. Ordinals leverage upgrades such as Taproot and operate in conjunction with third-party indexers. They are commonly used to create collectible "inscriptions," leading to the development of associated digital assets and application ecosystems.
Abstract
1.
Ordinals is a protocol that assigns a unique serial number to each satoshi (the smallest unit of Bitcoin), enabling Bitcoin to inscribe data and create NFTs on-chain.
2.
By leveraging Bitcoin's SegWit and Taproot upgrades, the Ordinals protocol allows arbitrary data such as images and text to be stored on individual satoshis.
3.
The Ordinals protocol has given rise to Bitcoin NFTs (Ordinal Inscriptions) and the BRC-20 token standard, bringing new vitality to the Bitcoin ecosystem.
4.
Unlike Ethereum NFTs, Ordinals data is stored directly on the Bitcoin blockchain, offering greater decentralization and permanence.
what are ordinals

What Are Ordinals?

Ordinals refer to the process of assigning a unique, sequential number to each satoshi—the smallest unit of Bitcoin—and linking a piece of small data to that specific number. This enables the tracking and trading of these units directly on the blockchain. In essence, ordinals give every micro-bitcoin its own serial number and label.

A "satoshi" is the smallest denomination in Bitcoin, representing one hundred millionth of a single bitcoin. Ordinals assign an order to each satoshi; when users embed images, text, or other data within the transaction’s witness data, an indexer associates that content with a particular satoshi, creating a collectible entry commonly known in the community as an "inscription".

Why Did Ordinals Emerge on Bitcoin?

Ordinals became possible after Bitcoin protocol upgrades introduced a more flexible transaction structure and expanded witness data capacity, allowing for the storage and tracking of small data fragments on-chain. This fulfills the demand for directly storing and tagging content on the Bitcoin mainnet.

The Taproot upgrade brought advanced spending conditions and privacy enhancements to Bitcoin, while Segregated Witness (SegWit) ensured that extra data was stored in the witness section, separate from core validation logic. Developers leveraged these features to embed files or text within witness data, while external indexers continuously track and display these associations.

How Are Satoshis Numbered and Data Recorded by Ordinals?

Ordinal numbering is based on the order in which satoshis are mined—similar to assigning a serial number to every micro "coin" as it is created. Data recording involves embedding small pieces of content into the witness section of a transaction, with indexers linking that content to a specific numbered satoshi.

In Bitcoin, users do not hold coins directly but instead control a set of UTXOs (Unspent Transaction Outputs), which function like a wallet full of change. The ordinal indexer tracks the movement of satoshis across different UTXOs to maintain the mapping between each satoshi and its linked content. Since witness data does not affect consensus validation, the network continues to operate as usual, but external indexers are responsible for parsing and displaying these bindings.

What Are Ordinal Inscriptions and Their Use Cases?

Ordinal inscriptions are the result of binding images, text, or small files to an individually numbered satoshi—essentially "engraving" data onto a micro-bitcoin and letting it circulate. The primary use cases include collectibles, digital art, on-chain proofs, and lightweight application prototypes.

Commonly, creators mint ordinal inscriptions for digital images or pixel art; collectors can view and transfer them using wallets and marketplaces that support ordinals. Developers may also use textual inscriptions for "readable contract fragments" or project documentation, enabling richer forms of expression within the Bitcoin ecosystem.

How Do Ordinals Differ from NFTs?

Both ordinals and NFTs serve to tag and trade unique digital assets. The key difference is that ordinals bind data directly to satoshis on the Bitcoin mainnet, while most NFTs rely on smart contracts and external storage links.

On blockchains like Ethereum, NFTs are managed by smart contracts that track token IDs and ownership; their associated content typically resides on IPFS or web servers and is referenced via links. Ordinals, in contrast, embed data fragments within Bitcoin transaction witness data, with indexers tracking by satoshi numbers. This approach is closer to Bitcoin's native design but offers less flexibility and programmability compared to smart contract-based NFT systems.

What Is the Impact of Ordinals on Bitcoin?

Ordinals affect Bitcoin’s block space and transaction fees because embedding data in the witness section consumes resources, potentially increasing fees during periods of high demand. This has sparked debate within the community about optimal use of block space.

From a network perspective, ordinals do not alter consensus rules. However, when inscription activity surges, miners may prioritize higher-fee transactions, causing ordinary transfers to experience slower confirmations and higher costs. On the positive side, ordinals introduce new native use cases for creators and collectors, expanding Bitcoin’s ecosystem with novel content and markets.

How to Participate in Ordinals: Wallets, Minting, and Trading Steps

To participate in ordinals, you need a compatible wallet, sufficient funds for fees, and careful operational steps. The overall process is straightforward but attention to detail and risk management is crucial.

Step 1: Choose a wallet that supports ordinals and securely back up your mnemonic phrase. The mnemonic is your master key for asset recovery—store it offline and never share it with anyone.

Step 2: Prepare some bitcoin to pay for miner fees. Ordinal inscriptions consume additional witness space and typically incur higher fees than standard transfers—plan your budget accordingly.

Step 3: Mint or purchase ordinal inscriptions. To mint, upload your file or text through a supported service or custom tool to create a transaction containing witness data. When buying, verify both the inscription number and content before transferring ownership.

Step 4: Test with a small transfer first. Use a minimal amount to confirm addresses and formats are correct, reducing risks from UTXO management errors or incompatible address types.

How to Experience and Track Ordinals on Gate?

On Gate, you can engage with ordinals by following or trading assets linked to the ordinal ecosystem and tracking trending inscriptions and project updates. Gate serves as an entry point into native Bitcoin content ecosystems.

In practice, search for tokens or sectors associated with ordinals on Gate—such as inscription-related tokens like ORDI—and monitor market announcements or research columns for fee changes and new projects. Always assess volatility and liquidity risks before any transaction.

What Are the Risks and Compliance Considerations of Ordinals?

Ordinals present both financial and content-related risks: financially, there are risks from price volatility, rising fees, UTXO management errors, or address mismatches; on the content side, copyright issues, illegal content, and long-term storage raise compliance concerns.

Always verify tools and contract addresses via official or trusted sources—beware of phishing sites and scam links. Once an inscription is recorded on-chain, it is nearly impossible to remove; creators and buyers should carefully consider copyright and legal liabilities. Set appropriate fees and confirmation counts to avoid cost overruns during peak periods due to fee bidding.

What Is the Outlook for Ordinals? Scalability and Standardization

The future of ordinals centers around three main directions: more efficient indexing standards, improved fee management tools, and collaboration with Bitcoin scalability solutions or layer 2 protocols. The community is also exploring shifting certain logic or data to more suitable layers to reduce mainnet congestion.

As the ecosystem matures, tools will become easier to use while indexing consistency and anti-fraud capabilities improve. Spikes in miner fees may persist but markets will likely adapt by batching inscriptions during off-peak times. Layer 2 solutions and cross-chain displays could unlock new scenarios—but compliance and user education remain critical.

Key Takeaways on Ordinals & Next Steps

Ordinals assign unique numbers to each satoshi—the smallest unit of bitcoin—and bind small pieces of data to them, creating trackable on-chain entries known as "inscriptions". Leveraging Taproot upgrades and witness data with indexers maintaining these mappings, their primary application is digital collectibles. Participation requires an ordinal-compatible wallet, adequate miner fees, and strict risk management. Moving forward: follow relevant platforms and tool advancements; start small during low-fee periods; gradually deepen engagement—balancing experience with safety and compliance.

FAQ

What Is the Fundamental Difference Between Ordinal Inscriptions and Regular NFT Minting?

Ordinal inscriptions record data directly on the Bitcoin blockchain as an inseparable part of its history; whereas NFTs typically store only pointers on-chain while the actual data resides off-chain. As a result, ordinal inscriptions are more persistent—their data is permanently stored on the Bitcoin mainnet without reliance on external servers. Ownership is enforced via the UTXO model, closely tied to standard Bitcoin transactions.

Does My Bitcoin Wallet Support Ordinals? How Can I Check?

Not all wallets natively support ordinal operations—they must have Taproot address compatibility and robust UTXO management features. Recommended wallets include Xverse and Unisat, which specialize in ordinal support; you can also experience ordinal inscription minting and trading on platforms like Gate. To check compatibility, see if your wallet supports Taproot addresses (starting with bc1p) as well as dedicated inscription management features.

Where Does Ordinal Inscription Value Come From? Why Would Someone Pay for It?

The value of ordinal inscriptions arises from their scarcity, immutability, and native integration with the Bitcoin mainnet. Early inscriptions have timestamp advantages and collectible value; some artists or brands use them for creative expression. Pricing is determined by market supply and demand—similar to digital art or collectibles—but price volatility can be high. Be sure to understand risks before participating; do not follow trends blindly.

How Much Does It Cost to Inscribe an Ordinal? How Is It Calculated?

The cost of inscribing an ordinal mainly comprises two components: Bitcoin network gas fees (calculated as bytes x per-unit rate) plus any platform service fees (if applicable). Fees fluctuate based on network congestion—from a few dollars to several hundred dollars at peak times. To reduce costs, inscribe during off-peak periods and check real-time fee estimates on platforms like Gate. Once inscribed, data becomes permanently embedded in the blockchain—irreversible and immutable.

Will Ordinals Affect the Bitcoin Network?

A large volume of ordinal inscriptions increases block size usage on Bitcoin, which may contribute to network congestion and higher transaction fees. However, this also drives adoption of scalability solutions (such as Lightning Network or Layer 2), further developing the Bitcoin ecosystem. In the long run, ordinals stimulate new applications for Bitcoin—even though they raise debates over "data bloat," they showcase the technical flexibility and extensibility of the network.

A simple like goes a long way

Share

Related Glossaries
nft
NFTs (Non-Fungible Tokens) are unique digital certificates recorded on the blockchain, designed to establish authenticity and ownership of digital items, in-game assets, membership privileges, or representations of real-world assets. NFTs can be bought, sold, and transferred, with all rules and transactions governed by smart contracts that execute automatically on-chain. They are commonly found on public blockchains such as Ethereum and across NFT marketplaces, serving use cases like collectibles, trading, and identity verification.
Define Nonce
A nonce is a one-time-use number that ensures the uniqueness of operations and prevents replay attacks with old messages. In blockchain, an account’s nonce determines the order of transactions. In Bitcoin mining, the nonce is used to find a hash that meets the required difficulty. For login signatures, the nonce acts as a challenge value to enhance security. Nonces are fundamental across transactions, mining, and authentication processes.
Bitcoin Address
A Bitcoin address is a string of characters used for receiving and sending Bitcoin, similar to a bank account number. It is generated by hashing and encoding a public key (which is derived from a private key), and includes a checksum to reduce input errors. Common address formats begin with "1", "3", "bc1q", or "bc1p". Wallets and exchanges such as Gate will generate usable Bitcoin addresses for you, which can be used for deposits, withdrawals, and payments.
Bitcoin Pizza
Bitcoin Pizza refers to the real transaction that took place on May 22, 2010, in which someone purchased two pizzas for 10,000 bitcoins. This day is now commemorated annually as Bitcoin Pizza Day. The story is frequently cited to illustrate Bitcoin's use as a payment method, its price volatility, and the concept of opportunity cost, serving as a popular topic for community education and commemorative events.
What Is NFT
An NFT is a unique digital certificate on the blockchain used to represent ownership and provenance of a specific digital or physical asset. NFTs can correspond to images, music, in-game items, tickets, certificates, and more. Their records are publicly accessible and resistant to tampering, enabling secure trading and transfers on marketplaces. NFTs are particularly well-suited for scenarios such as proof of ownership, membership privileges, and ticketing systems that prevent scalping.

Related Articles

In-depth Explanation of Yala: Building a Modular DeFi Yield Aggregator with $YU Stablecoin as a Medium
Beginner

In-depth Explanation of Yala: Building a Modular DeFi Yield Aggregator with $YU Stablecoin as a Medium

Yala inherits the security and decentralization of Bitcoin while using a modular protocol framework with the $YU stablecoin as a medium of exchange and store of value. It seamlessly connects Bitcoin with major ecosystems, allowing Bitcoin holders to earn yield from various DeFi protocols.
2024-11-29 10:10:11
Top 10 NFT Data Platforms Overview
Intermediate

Top 10 NFT Data Platforms Overview

What are the top NFT data platforms? This article highlights ten leading NFT data platforms, listing their key features so you can choose the right one for NFT analysis based on your needs.
2024-10-28 14:54:39
7 Analysis Tools for Understanding NFTs
Intermediate

7 Analysis Tools for Understanding NFTs

The NFT industry can look opaque, but there are tools that can help you understand the underlying data.
2022-12-19 02:09:54