In July 2013, a developer posted a message on Bitcointalk. He had an idea: build a new layer on top of Bitcoin, sell tokens to fund it, and do it all without banks or venture capital. That idea became Mastercoin. And Mastercoin became the world's first ICO.
This is the complete story — the idea, the fundraise, the technology, the rebranding, and the legacy that still shapes every crypto presale today.
Who Was J.R. Willett and What Did He Want to Build?
J.R. Willett was a software developer who believed Bitcoin's blockchain could do more than just send and receive Bitcoin. In January 2012, he published what he called "The Second Bitcoin White Paper." This document proposed building a new protocol layer on top of Bitcoin that could:
- Create new currencies (tokens) without building a separate blockchain
- Enable a decentralised exchange for trading those tokens
- Support smart contracts and savings wallets
- Enable distributed betting and prediction markets
The analogy Willett himself used: Mastercoin was to Bitcoin what HTTP is to TCP/IP — a higher-level application protocol built on top of a fundamental base layer.
This was, in essence, the concept that Ethereum would later realise with far greater scale and elegance. Ethereum has even been called "Mastercoin 2.0" within the crypto community.
How the First ICO Worked: The Mechanics
On July 31, 2013, Willett officially launched the Mastercoin project via a Bitcointalk forum post. The fundraising mechanics were simple:
- Willett published a Bitcoin address — the "Exodus Address" (1EXoDusjGwvnjZUyKkxZ4UHEf77z6A5S4P)
- Anyone sending BTC to this address before August 31, 2013 would receive Mastercoin tokens in return
- The exchange rate was 100 Mastercoins per 1 BTC during the early bonus window
- Tokens were issued manually by the team after the fundraise closed
There was no smart contract. No polished website. No marketing team. Just a Bitcointalk thread, a white paper, and a Bitcoin address. That was the entire fundraise.
By August 31, 2013, approximately 4,700–5,000 BTC had been raised. At 2013 Bitcoin prices (~$100), this was worth approximately $500,000. Those same BTC coins at today's prices would be worth hundreds of millions of dollars.
What Made the Mastercoin ICO Revolutionary
To appreciate its significance, consider the alternatives available in 2013 for funding a software project:
- Venture capital — required giving up equity and company control
- Bank loans — required collateral and credit history
- Kickstarter — limited to consumer products, no token distribution
Willett bypassed every one of these. He raised half a million dollars from a global community of believers via the internet in one month. No equity given up. No bank. No borders. The entire transaction was permanently recorded on the Bitcoin blockchain.
This template — send crypto to an address, receive tokens in return — is still the foundation of every crypto presale in 2026, even as the infrastructure around it has become vastly more sophisticated. See how modern presales have evolved in our guide on understanding presale terms and conditions.
Mastercoin's Technology: What It Actually Built
Mastercoin's core technical achievement was embedding additional data in Bitcoin transactions to represent Mastercoin-specific commands — creating a layer of custom logic on top of Bitcoin's base protocol. Bitcoin-aware software could not read this layer. Only Mastercoin-aware software could interpret the commands.
This was one of the first practical implementations of what would later be called "layer 2" technology. Planned features included:
- User-defined currency creation on top of Bitcoin
- A decentralised exchange for these tokens (predating Uniswap by 5 years)
- Savings wallets and escrow smart contracts
- Distributed betting and prediction markets
The decentralised exchange never fully launched. But the token creation layer became the foundation for something far more consequential: Tether (USDT).
The Mastercoin-to-Omni Rebranding (2015)
By 2015, Mastercoin was struggling. Community fractures, leadership controversies (including board member Brock Pierce's resignation), and negative press damaged the brand. In January 2015, the project announced a full rebranding to "Omni" (full name: Omni Layer).
Key figures migrated with the rebrand: J.R. Willett (chief architect), Craig Sellars (CTO), and David Johnston (BitAngels co-founder and board member). The token was renamed from MSC to OMNI, and development continued.
Mastercoin's Biggest Legacy: It Became the Home of Tether (USDT)
Here is the most remarkable part of this story: J.R. Willett's 2013 fundraising experiment produced the protocol layer that became the original home of Tether — the world's largest stablecoin and the most traded cryptocurrency by volume.
When Tether launched in 2014, it issued USDT tokens on the Omni Layer (formerly Mastercoin) protocol on the Bitcoin blockchain. For several years, most USDT in existence ran on Omni Layer.
Over time, Tether expanded to Ethereum (ERC-20) and then to TRON (TRC-20). Today, TRON handles over 75% of all USDT volume globally. But the origin story of every USDT token traces directly back to Mastercoin's 2013 ICO and the protocol Willett built.
Mastercoin's Influence on What Came After
- Ethereum (2014): Raised 31,591 BTC (~$18M) using the ICO model Mastercoin pioneered. Buterin acknowledged the influence of Bitcoin 2.0 projects. Ethereum took the concept immeasurably further with a dedicated smart contract blockchain
- The 2017 ICO Boom: Over $5.6 billion raised through ICOs in 2017 alone — all using the template Mastercoin invented in 2013
- Modern presales (2026): Multi-stage presales with audited smart contracts, KYC verification, live dashboards, and DEX listings — all descended from one Bitcointalk thread and a single Bitcoin address
For investors today, this history is directly relevant. The ICO model that Mastercoin pioneered produced some of the biggest crypto winners in history — and some of its biggest frauds. Understanding the origin of how token fundraising works is part of being an informed investor. See our guide on how to spot modern presale scams for red flags that Mastercoin-era investors could not have known to check.
Mastercoin ICO 2013: Key Facts at a Glance
- Project name: Mastercoin (later Omni Layer)
- Founder: J.R. Willett
- White paper published: January 2012
- ICO launched: July 31, 2013
- ICO closed: August 31, 2013
- Amount raised: ~4,700–5,000 BTC
- USD value (2013): ~$500,000
- Price per token: 100 MSC per 1 BTC (early period)
- Total supply: ~619,000 OMNI
- Exodus address: 1EXoDusjGwvnjZUyKkxZ4UHEf77z6A5S4P (visible on Bitcoin blockchain today)
- Biggest legacy: The original home of Tether (USDT)
Glossary
- ICO (Initial Coin Offering)
- A crypto fundraising method where a project sells tokens in exchange for cryptocurrency. Mastercoin's 2013 sale is the first on record.
- Omni Layer
- The rebranded name for the Mastercoin protocol — a layer built on Bitcoin allowing creation and transfer of user-defined tokens.
- Exodus Address
- The Bitcoin address (1EXoDusjGwvnjZUyKkxZ4UHEf77z6A5S4P) used to receive funds in Mastercoin's 2013 ICO, still visible on the Bitcoin blockchain.
- Second Bitcoin White Paper
- J.R. Willett's January 2012 document proposing a protocol layer on top of Bitcoin — the conceptual foundation of both Mastercoin and later Ethereum.
- Bitcoin 2.0
- A term used 2013–2015 for projects building token and smart contract capabilities on top of Bitcoin. Mastercoin was the first and most successful Bitcoin 2.0 project.
- Tether (USDT)
- The world's largest stablecoin. Originally launched on Omni Layer (formerly Mastercoin) in 2014. Now also on Ethereum and TRON (which handles 75%+ of global USDT volume).
Disclaimer
Important: This article is for historical and educational purposes only. Past ICO performance does not predict future results. Crypto investments carry high risk. CryptoPresaleNews.com is not a licensed financial advisor. Do your own research before investing in any project.
