{"id":"ring-usd","title":"Ring USD","content":"**Ring USD** (USDR) is a [stablecoin](https://iq.wiki/wiki/stablecoin) that operates on the [Ethereum](https://iq.wiki/wiki/ethereum) blockchain and is part of the broader [Ring Protocol](https://iq.wiki/wiki/ring-protocol) ecosystem. It is categorized as a USD [Stablecoin](https://iq.wiki/wiki/stablecoin) and is designed to be traded on [decentralized exchanges (DEXs)](https://iq.wiki/wiki/decentralized-exchange).  [\\[1\\]](#cite-id-wG2HN9FbJmtzbgNy) [\\[2\\]](#cite-id-Kz2levcOYBk9dYMn)​\n\n## Overview\n\nRing USD is intrinsically linked to its parent project, [Ring Protocol](https://iq.wiki/wiki/ring-protocol). The protocol's stated mission is to address liquidity inefficiencies in the [DeFi](https://iq.wiki/wiki/defi) sector by connecting \"billions of idle assets\" on-chain with crypto projects that require liquidity. The project's vision is \"to build an universal liquidity protocol for maximizing asset utilization.\" The protocol's technology is built for [Ethereum Virtual Machine (EVM)](https://iq.wiki/wiki/ethereum-virtual-machine-evm) compatible [blockchains](https://iq.wiki/wiki/blockchain), with a specific focus on the [Ethereum](https://iq.wiki/wiki/ethereum) and [Blast](https://iq.wiki/wiki/blast) networks. [\\[2\\]](#cite-id-Kz2levcOYBk9dYMn) [\\[3\\]](#cite-id-Ighe79kJgCRAIgFt) \n\n## Tokenomics\n\nThe Ring Protocol ecosystem utilizes multiple tokens, each with a specific function. While USDR serves as the protocol's stablecoin, other tokens facilitate liquidity provision and governance.\n\n### Ring USD (USDR)\n\nRing USD is classified as a USD [Stablecoin](https://iq.wiki/wiki/stablecoin) that primarily operates on the [Ethereum](https://iq.wiki/wiki/ethereum) blockchain as an [ERC-20](https://iq.wiki/wiki/erc-20) token. [\\[1\\]](#cite-id-wG2HN9FbJmtzbgNy)​\n\n* **Supply Model:** USDR operates with a fixed supply. As of December 2025, the total supply and the circulating supply were identical at 100,400,000 USDR. [\\[1\\]](#cite-id-wG2HN9FbJmtzbgNy) [\\[2\\]](#cite-id-Kz2levcOYBk9dYMn)\n* **Maximum Supply:** Despite its fixed circulating supply, the theoretical maximum supply for USDR is listed as infinite, suggesting that more tokens could potentially be minted in the future. [\\[1\\]](#cite-id-wG2HN9FbJmtzbgNy)\n* **Blockchain Presence:** USDR exists on multiple blockchains. Its primary network is [Ethereum](https://iq.wiki/wiki/ethereum), but it is also available on the BNB Smart Chain. [\\[1\\]](#cite-id-wG2HN9FbJmtzbgNy) [\\[2\\]](#cite-id-Kz2levcOYBk9dYMn)\n\n### Contract Addresses\n\nRing USD can be found on multiple EVM-compatible blockchains. The official contract addresses are:\n\n* [**Ethereum**](https://iq.wiki/wiki/ethereum)**:** `0x4ea40dcee961675683e0a2e1721bd49cb9bca913`\n* [**BNB Smart Chain**](https://iq.wiki/wiki/binance-bridged-usdc-bnb-smart-chain)**:** `0x021988d2c89b1A9Ff56641b2F247942358FF05c9`\n\nThe existence of these contracts allows USDR to be bridged and utilized across different DeFi ecosystems. [\\[1\\]](#cite-id-wG2HN9FbJmtzbgNy) [\\[2\\]](#cite-id-Kz2levcOYBk9dYMn)​","summary":"Ring USD (USDR) is a stablecoin operating on the Ethereum blockchain as part of the Ring Protocol ecosystem. Ring Protocol is a decentralized finance (DeFi) project designed to be a universal liquidity protocol. USDR is traded on decentralized exchanges.","images":[{"id":"Qmc8gfx6zpYqSEA3hshHP9fCsUsVCkvonuPL33MKUvWLv4","type":"image/jpeg, image/png"}],"categories":[{"id":"cryptocurrencies","title":"cryptocurrencies"}],"tags":[{"id":"Stablecoins"},{"id":"Ethereum"},{"id":"Protocols"},{"id":"DEXes"}],"media":[],"metadata":[{"id":"references","value":"[\n  {\n    \"id\": \"wG2HN9FbJmtzbgNy\",\n    \"url\": \"https://www.coingecko.com/en/coins/ring-usd\",\n    \"description\": \"CoinGecko Ring USD token overview\",\n    \"timestamp\": 1765117944024\n  },\n  {\n    \"id\": \"Kz2levcOYBk9dYMn\",\n    \"url\": \"https://iq.wiki/wiki/ring-protocol\",\n    \"description\": \"IQ.wiki overview of Ring Protocol and USDR\",\n    \"timestamp\": 1765117944024\n  },\n  {\n    \"id\": \"Ighe79kJgCRAIgFt\",\n    \"url\": \"https://ringprotocol.gitbook.io/ring\",\n    \"description\": \"Ring Protocol official documentation\",\n    \"timestamp\": 1765117944024\n  }\n]"},{"id":"website","value":"https://ring.exchange/"},{"id":"twitter_profile","value":"https://twitter.com/ProtocolRing"},{"id":"discord_profile","value":"https://discord.com/invite/TefBNDZBQP"},{"id":"github_profile","value":"https://github.com/ringfi/"},{"id":"telegram_profile","value":"https://t.me/ringfiofficial"},{"id":"medium_profile","value":"https://medium.com/@ringfi"},{"id":"coingecko_profile","value":"https://www.coingecko.com/en/coins/ring-usd"},{"id":"contract_url","value":"https://etherscan.io/token/0x4EA40dcee961675683e0a2e1721Bd49CB9bca913"},{"id":"commit-message","value":"\"Added wiki for Ring USD (USDR)\""}],"events":[{"id":"bba850fd-0f57-4a4a-8543-a469714b9cba","date":"2025-05","title":"Ring Protocol Public Initiative","type":"CREATED","description":"Ring Protocol, a universal liquidity protocol, began its public-facing initiatives after three years of research and development, introducing its suite of DeFi products.","link":"https://ringprotocol.gitbook.io/ring","multiDateStart":null,"multiDateEnd":null,"continent":null,"country":null},{"id":"45100fe6-bd44-4fd9-9a31-1522ef2be890","date":"2025-10","title":"USDR All-Time High Price","type":"DEFAULT","description":"Ring USD (USDR) reached its all-time high price of $1.04.","link":"https://www.coingecko.com/en/coins/ring-usd","multiDateStart":null,"multiDateEnd":null,"continent":null,"country":null},{"id":"bfb1c323-79cf-4b3f-9b1a-f034650fbe59","date":"2025-11","title":"USDR All-Time Low Price","type":"DEFAULT","description":"Ring USD (USDR) reached its all-time low price of $0.9675.","link":"https://www.coingecko.com/en/coins/ring-usd","multiDateStart":null,"multiDateEnd":null,"continent":null,"country":null}],"user":{"id":"0x8af7a19a26d8fbc48defb35aefb15ec8c407f889"},"author":{"id":"0x8af7a19a26d8fbc48defb35aefb15ec8c407f889"},"operator":{"id":"0x4a2bC97afBF41a2Cbf4b4628F63420682Ff4CF2a"},"language":"en","version":1,"linkedWikis":{"blockchains":["ethereum"],"founders":["anon"],"speakers":[]}}