{"id":50966268,"url":"https://github.com/collinsadi/opaque","last_synced_at":"2026-06-18T20:33:07.126Z","repository":{"id":347849806,"uuid":"1161838334","full_name":"collinsadi/opaque","owner":"collinsadi","description":"A stealth-address wallet and privacy protocol","archived":false,"fork":false,"pushed_at":"2026-03-29T18:14:33.000Z","size":36233,"stargazers_count":3,"open_issues_count":0,"forks_count":0,"subscribers_count":0,"default_branch":"main","last_synced_at":"2026-03-29T20:32:31.377Z","etag":null,"topics":["privacy","protocol","rust","solidity","stealth"],"latest_commit_sha":null,"homepage":"https://opaque.cash","language":"TypeScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/collinsadi.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null,"notice":null,"maintainers":null,"copyright":null,"agents":null,"dco":null,"cla":null}},"created_at":"2026-02-19T15:20:08.000Z","updated_at":"2026-03-29T18:14:37.000Z","dependencies_parsed_at":null,"dependency_job_id":null,"html_url":"https://github.com/collinsadi/opaque","commit_stats":null,"previous_names":["collinsadi/opaque"],"tags_count":null,"template":false,"template_full_name":null,"purl":"pkg:github/collinsadi/opaque","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/collinsadi%2Fopaque","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/collinsadi%2Fopaque/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/collinsadi%2Fopaque/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/collinsadi%2Fopaque/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/collinsadi","download_url":"https://codeload.github.com/collinsadi/opaque/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/collinsadi%2Fopaque/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":34507159,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-05-26T15:22:16.424Z","status":"online","status_checked_at":"2026-06-18T02:00:06.871Z","response_time":128,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["privacy","protocol","rust","solidity","stealth"],"created_at":"2026-06-18T20:33:06.249Z","updated_at":"2026-06-18T20:33:07.121Z","avatar_url":"https://github.com/collinsadi.png","language":"TypeScript","funding_links":[],"categories":[],"sub_categories":[],"readme":"\u003cp align=\"center\"\u003e\n\u003cpre align=\"center\"\u003e\n ╔═══════════════════════════════════════╗\n ║              O P A Q U E              ║\n ╚═══════════════════════════════════════╝\n\u003c/pre\u003e\n  \u003cbr /\u003e\n  \u003cb\u003ePrivate payments \u0026amp; proof-backed reputation on Ethereum\u003c/b\u003e\n  \u003cbr /\u003e\u003cbr /\u003e\n  \u003ca href=\"https://opaque.cash\"\u003eWebsite\u003c/a\u003e\n  \u0026nbsp;·\u0026nbsp;\n  \u003ca href=\"https://github.com/opaquecash/opaque\"\u003eGitHub\u003c/a\u003e\n  \u0026nbsp;·\u0026nbsp;\n  \u003ca href=\"https://www.npmjs.com/package/@opaquecash/opaque\"\u003eSDK\u003c/a\u003e\n  \u0026nbsp;·\u0026nbsp;\n  \u003ca href=\"https://docs.opaque.cash\"\u003eDocs\u003c/a\u003e\n  \u0026nbsp;·\u0026nbsp;\n  \u003ca href=\"https://docs.opaque.cash/playground\"\u003ePlayground\u003c/a\u003e\n  \u0026nbsp;·\u0026nbsp;\n  \u003ca href=\"https://demo.opaque.cash\"\u003ePSR Verifier Demo\u003c/a\u003e\n  \u0026nbsp;·\u0026nbsp;\n  \u003ca href=\"https://youtu.be/NAo7j0-Yqa8\"\u003eDemo\u003c/a\u003e\n  \u003cbr /\u003e\u003cbr /\u003e\n  \u003ca href=\"https://opensource.org/licenses/MIT\"\u003e\u003cimg src=\"https://img.shields.io/badge/license-MIT-5c7cfa?style=flat-square\" alt=\"MIT License\" /\u003e\u003c/a\u003e\n\u003c/p\u003e\n\n---\n\n**Opaque** is an open protocol for **unlinkable receive addresses** and optional **reputation you can prove without doxxing your wallet**. Think of it as: every payment can land at a fresh address only you control, while still letting apps verify things like “this person passed KYC” or “this account is in good standing”—using zero-knowledge proofs when you opt into that layer.\n\nNo single product owns the stack: there is a **reference wallet** at [opaque.cash](https://opaque.cash), a [**TypeScript SDK**](https://www.npmjs.com/package/@opaquecash/opaque) for builders, [**developer docs**](https://docs.opaque.cash) (guides + API reference + playground), and **on-chain contracts** you can read and deploy yourself.\n\n\u003e **Heads-up:** This is experimental software. Stealth cryptography and local-only data paths have real trade-offs—read [DISCLAIMER.md](DISCLAIMER.md) before relying on it for anything serious.\n\n---\n\n## What the protocol does today\n\n| | |\n|:---|:---|\n| **Stealth payments (EIP-5564)** | Recipients share a **meta-address** (not a single static deposit address). Senders derive a **one-time address** per transfer so observers cannot trivially link your incoming flow on-chain. |\n| **Registry** | Optionally map your normal Ethereum address to your meta-address so people can pay you **by `0x…`** without pasting a long key—resolution is public; the unlinkability is in how funds are received. |\n| **Announcer** | Senders emit a compact **announcement** on-chain so the right recipient can **discover** which stealth outputs are theirs (with **view tags** so scanning stays practical). |\n| **Manual “ghost” receives** | The app can also generate one-time addresses **without** an on-chain announcement; those rely on **local storage** on the device—flexible, but not recoverable from chain state alone. |\n| **PSR — private reputation** | When you need it, **attestation metadata** can ride alongside announcements. The recipient can **discover traits** from their announcements, then build **Groth16 proofs** scoped to an action and verify against **on-chain roots**—showing *that* you qualify without exposing *who* you are to everyone. |\n\nUnder the hood, heavy lifting uses **Rust → WebAssembly** for scanning and crypto, **viem**-friendly ABIs for contracts, and hosted circuit artifacts on [opaque.cash](https://opaque.cash) for proof generation when you don’t self-host.\n\n---\n\n## Build with the SDK\n\nThe **`@opaquecash/opaque`** package is the unified client: configure **chain + RPC + wallet signature + WASM**, pass **indexer-shaped announcements**, and get **calldata** for register/announce flows, **owned outputs**, **balances by token**, and **PSR traits**—without forcing a specific indexer or UI.\n\n```bash\ncd sdk \u0026\u0026 npm install \u0026\u0026 npm run build\n```\n\nPoint your app at the published WASM entry (or your own build):\n\n`https://www.opaque.cash/pkg/cryptography.js`\n\nFull API surface, types, and lower-level packages (`@opaquecash/stealth-*`, `@opaquecash/psr-*`) live in **[sdk/packages/opaque/README.md](sdk/packages/opaque/README.md)**.\n\n---\n\n## Developer docs\n\nThe **`docs/`** app is a Vite + React site: quick start, configuration, indexer integration, send/receive guides, PSR flows, API reference, and a **playground**.\n\n```bash\ncd docs \u0026\u0026 npm install \u0026\u0026 npm run dev\n```\n\nUse it alongside the SDK README when you’re wiring **Graph-style announcement rows**, **reputation proofs**, or custom deployments.\n\n---\n\n## Repository map\n\n| Path | What you’ll find |\n|------|------------------|\n| [`frontend/`](frontend/) | Reference wallet UI (balances, send, receive, private balance) |\n| [`sdk/`](sdk/) | **`@opaquecash/opaque`** and modular stealth + PSR packages |\n| [`docs/`](docs/) | Developer documentation site |\n| [`infra/`](infra/) | Hardhat contracts, deploy scripts |\n| [`scanner/`](scanner/) | Rust WASM core; see [scanner/WASM_BUILD.md](scanner/WASM_BUILD.md) |\n\n---\n\n## Contracts (Sepolia)\n\n| | |\n|:---|:---|\n| **StealthMetaAddressRegistry** | [0x77425e04163d608B876c7f50E34A378624A12067](https://sepolia.etherscan.io/address/0x77425e04163d608B876c7f50E34A378624A12067) |\n| **StealthAddressAnnouncer** | [0x840f72249A8bF6F10b0eB64412E315efBD730865](https://sepolia.etherscan.io/address/0x840f72249A8bF6F10b0eB64412E315efBD730865) |\n| **Groth16Verifier** | [0x78A169b6E308Fd5BfAfc728f216CdB06EcEdde06](https://sepolia.etherscan.io/address/0x78A169b6E308Fd5BfAfc728f216CdB06EcEdde06) |\n| **OpaqueReputationVerifier** | [0x30B750Ae9851e104F8dbB4B8082b1a07a34885B0](https://sepolia.etherscan.io/address/0x30B750Ae9851e104F8dbB4B8082b1a07a34885B0) |\n\n---\n\n## Community\n\nIssues and PRs are welcome—whether you’re fixing a doc typo, improving the SDK ergonomics, or integrating Opaque into something new.\n\n**Support:** [hello@collinsadi.xyz](mailto:hello@collinsadi.xyz)\n\n---\n\n\u003cp align=\"center\"\u003e\n  \u003csub\u003eMIT License · Built in public · \u003ca href=\"https://opaque.cash\"\u003eopaque.cash\u003c/a\u003e\u003c/sub\u003e\n\u003c/p\u003e","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcollinsadi%2Fopaque","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcollinsadi%2Fopaque","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcollinsadi%2Fopaque/lists"}