What is Dollar on Chain (DOC) Crypto Coin? Bitcoin-Collateralized Stablecoin Explained

Most stablecoins like USDT or USDC claim to be worth $1 because they hold dollars in bank accounts. But what if the dollar wasn’t in a bank at all? What if it was locked up in Bitcoin instead? That’s exactly what Dollar on Chain (DOC) does - and it’s the first stablecoin fully backed by Bitcoin, not cash.

How DOC Stays Worth $1 (Without a Bank)

DOC doesn’t store dollars in a vault or a bank account. Instead, it uses Bitcoin as collateral. Every DOC token you hold is backed by more than $1.50 worth of Bitcoin locked in smart contracts on the Rootstock (RSK) network. This isn’t just a marketing claim - it’s built into the code. If Bitcoin’s price drops, the system doesn’t panic and liquidate your collateral. Instead, it uses smart incentives to keep the peg stable. No bank. No middleman. Just Bitcoin doing the heavy lifting.

This design solves a real problem. USDT and USDC have been criticized for relying on opaque banking relationships. What if the bank freezes funds? What if regulators shut them down? DOC removes that risk entirely. It’s not tied to any government or financial institution. If Bitcoin keeps running, DOC keeps working.

The Three-Token System Behind DOC

DOC isn’t just one token. It’s part of a three-token system on RSK:

• DOC - The stablecoin pegged to $1.
• BPRO - A leveraged Bitcoin token that lets holders earn yield by taking on risk.
• BTCX - A derivative used to absorb price swings and keep DOC stable.

Think of it like a three-legged stool. If one leg wobbles, the others adjust to keep the whole thing upright. When Bitcoin’s price drops sharply, BPRO holders are incentivized to buy more DOC, which helps support its value. BTCX acts as a shock absorber during volatility. This system has held up through Bitcoin’s ups and downs, including a 30% drop in August 2024 and a 25% spike in June 2025.

How DOC Compares to Other Stablecoins

Let’s cut through the noise. Here’s how DOC stacks up against the big names:

DOC’s biggest edge? It’s the only stablecoin that lets you use Bitcoin as collateral without selling it. If you’re a Bitcoin holder who wants to borrow, lend, or pay for goods without giving up your BTC, DOC is built for you. DAI needs Ethereum assets. USDT needs banks. DOC? It just needs Bitcoin.

How to Get DOC

You have three ways to get DOC:

1. Buy it - Trade for DOC on exchanges like MEXC, Uniswap (on RSK), or Sovryn. As of February 2026, it’s listed on 8 active markets.
2. Mint it - Connect a wallet like Defiant, MetaMask, or Nifty Wallet to the Money on Chain app. Deposit rBTC (Bitcoin locked on RSK) as collateral. You need at least 150% of the value you want to mint. For example, to get $100 in DOC, you need $150 in rBTC.
3. Receive it - Someone else sends you DOC, just like any other crypto.

The minting process takes about 3 minutes and costs less than $1 in gas fees (paid in rBTC). Users report that after a few tries, it becomes second nature. But if you’re new to crypto, expect to spend 2-3 hours learning how wallets and collateral ratios work.

Why DOC Isn’t Everywhere Yet

DOC isn’t on Coinbase, Binance, or Kraken. It’s not even in the top 100 stablecoins by market cap. As of February 2026, its total value is around $4.6 million. Compare that to USDT’s $110 billion. Why?

Because DOC isn’t trying to be everywhere. It’s trying to be the best for Bitcoiners. It’s designed for people who believe Bitcoin should be money - not just an asset. If you’re using Bitcoin to pay for coffee, lend money, or run a DeFi app, DOC gives you stability without leaving Bitcoin’s ecosystem.

But that also means it has limits. Trading DOC on small DEXs can cause slippage. One user reported splitting a $1,000 sale across three exchanges just to avoid losing 5% to price swings. That’s not a flaw in DOC - it’s a sign that liquidity is still thin. If you’re trading large amounts, you’ll feel it.

Who Uses DOC - And Why

Most DOC users fall into two groups:

• Bitcoin maximalists - People who don’t trust banks or Ethereum. They hold BTC and want to use it without selling.
• RSK DeFi users - People who run lending protocols, yield farms, or dApps on RSK. DOC is their go-to stable asset.

On Reddit and RSK forums, users praise DOC for letting them “earn interest on Bitcoin without touching it.” One user minted 500 DOC using rBTC during a Bitcoin dip and used it to buy goods on RSK-based marketplaces. Another used DOC to repay a loan without selling any BTC. These aren’t theoretical use cases - they’re happening right now.

But DOC isn’t for everyone. If you want to pay for Netflix or Amazon with a stablecoin, stick with USDC. DOC won’t work there. It’s not meant to replace them. It’s meant to give Bitcoiners a tool they didn’t have before.

What’s Next for DOC?

The DOC team has a clear roadmap:

• Q2 2026 - Cross-chain bridges to connect DOC with Ethereum and Solana.
• Q3 2026 - Integration with Bitcoin Lightning Network wallets, so you can send DOC directly through Lightning.
• Q4 2026 - Partnerships with 3 more centralized exchanges to boost liquidity.

If these happen, DOC could grow from a niche tool to a serious player in Bitcoin DeFi. Analysts at Delphi Digital predict DOC could hit $100 million in market cap by 2028 - still small compared to USDT, but big enough to matter. The key? More Bitcoiners need to see DOC as a natural part of their stack - not an experiment.

Is DOC Safe?

Yes - but with caveats. DOC’s smart contracts have been audited multiple times. No major exploit has occurred since its 2021 launch. The non-liquidation design has survived multiple Bitcoin crashes. But it’s not immune to risk:

• If RSK goes down, DOC goes down.
• If Bitcoin’s network gets congested, minting and redeeming could slow.
• If Bitcoin’s price crashes 80%, even 150% collateral might not be enough - though the system is designed to handle up to 60% drops.

It’s not risk-free. But compared to USDT’s bank dependency or UST’s algorithmic collapse, DOC’s risks are transparent, measurable, and rooted in Bitcoin - not hidden in corporate balance sheets.