Bitcoin Tokens Explained
Bitcoin can carry more than just BTC. This is a plain-English primer on the major token protocols built on Bitcoin — from the original Omni Layer (2013) to Runes (2024).
The core idea
Bitcoin's base layer was designed to move BTC. But the same blockchain that secures BTC can also secure other assets — by embedding extra data inside Bitcoin transactions and interpreting it with protocol-aware software like the OmniCore wallet.
This is the principle every Bitcoin token protocol shares. They differ in how they embed the data, what operations they support, and how they validate token state. For a direct cross-chain comparison, see Omni Layer vs ERC-20.
Major Bitcoin token protocols
Omni Layer
2013Meta-protocol using OP_RETURN. Powered USDT (2014–2025) and MaidSafeCoin. Reference wallet: OmniCore.
OmniCore historyCounterparty (XCP)
2014Smart-contract layer on Bitcoin using OP_RETURN. Known for early NFTs (Rare Pepes) and decentralized asset issuance.
RGB
2018+Client-side validation protocol with on-chain commitments. Designed for privacy and scalability via Lightning Network.
Taproot Assets
2023+Lightning Labs protocol for issuing assets on Bitcoin with off-chain scaling via Lightning channels.
Runes
2024Fungible-token protocol launched at the 2024 Bitcoin halving. Designed around the Ordinals ecosystem.
Why Omni Layer matters
Omni Layer is the original Bitcoin token protocol — proposed by J.R. Willett in 2012, launched in 2013, and continuously operating since. Tether (USDT) was first issued on Omni Layer in 2014, making it the birthplace of the stablecoin concept.
While newer protocols (Runes, Taproot Assets) attract more attention in 2026, Omni Layer has the longest production track record of any Bitcoin token protocol — and historical balances (USDT-Omni, MaidSafeCoin, OMNI, custom tokens) remain readable and verifiable using OmniCore v0.13.0.
Going deeper
FAQ
Can you have tokens on Bitcoin?
Yes. Bitcoin supports multiple token protocols built on top of its base layer. The oldest is Omni Layer (since 2013, originally Mastercoin), which uses OP_RETURN to encode token operations. Newer protocols include Counterparty (2014), RGB, Taproot Assets, and Runes (2024). All inherit Bitcoin's proof-of-work security.
What was the first token on Bitcoin?
The first widely used token protocol on Bitcoin was Mastercoin (later renamed Omni Layer), launched in August 2013 following J.R. Willett's 2012 white paper. Tether (USDT) was launched on Omni Layer in 2014 and was the first major stablecoin.
How do Bitcoin tokens work?
Different protocols use different mechanisms. Omni Layer encodes token operations in the OP_RETURN field of standard Bitcoin transactions. Runes uses a similar metadata-encoding approach optimized for the post-Taproot era. RGB and Taproot Assets use client-side validation with on-chain commitments. In every case, Bitcoin nodes secure the underlying transaction; protocol-aware software interprets the token state.
Are Bitcoin tokens secure?
The base-layer security inherits from Bitcoin's proof-of-work consensus, which is the strongest in cryptocurrency. Protocol-level security depends on the implementation. Omni Layer has 13+ years of production history and a single reference client (OmniCore), making it one of the most battle-tested Bitcoin token protocols.
What's the difference between Omni Layer, Runes, and Taproot Assets?
Omni Layer (2013) is the original meta-protocol, fully supported by OmniCore and historically used for USDT and MaidSafeCoin. Runes (2024) is a newer fungible-token protocol designed around the Ordinals/Taproot ecosystem. Taproot Assets (Lightning Labs) brings token issuance to Bitcoin with off-chain scaling via Lightning. Each targets different use cases.
Try Bitcoin's original token protocol
OmniCore v0.13.0 — the reference wallet for Omni Layer tokens on Bitcoin since 2013.
Download OmniCore