starkware-libs/privacy-bridge

Última actividad de origen registrada: 8 de julio de 2026 a las 14:04

Catálogo de SkillsMP actualizado: 9 de noviembre de 2026 a las 14:22

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Follow https://skillsmp.com/skill-install/prompt.md to install Agent Skills from https://github.com/starkware-libs/privacy-bridge.

README del repositorio

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# privacy-bridge A value-movement engine for the [`starknet-privacy`](https://github.com/starkware-libs/starknet-privacy) privacy pool. It moves USDC between everyday EVM wallets/chains and the privacy pool, so users can fund a private balance and later withdraw it — without linking the two sides on-chain. ## What it does - **Into the pool** — takes USDC from an EVM wallet and deposits it into the privacy pool as a private note. - **Out of the pool (BUY leg)** — withdraws from the pool and bridges USDC to a destination EVM chain, driven by the **`OutboundAnonymizer`** Cairo contract. - **Back into the pool (RETURN leg)** — bridges USDC from an EVM chain back into the pool via the inbound **`InboundAnonymizer`** Cairo contract, which binds the incoming funds to a private note. - **Cash out** — withdraws from the pool to the user's own EVM wallet. Cross-chain USDC transfers use **Circle's CCTP** (burn-and-mint with attestation). All client-side key material — Starknet key, viewing key, per-account EVM keys, and the note commitments — is derived from a single wallet signature. ## Privacy model The bridge is designed so that the deposit side and the withdrawal side of a transfer cannot be linked on-chain. Secrets (the wallet signature and derived private keys) are never logged, persisted, or revealed on-chain — the on-chain claim recomputes everything from the authenticated signer. The only capability that may be persisted is the read-only **viewing key** (it can discover notes but cannot move funds). ## Components - `packages/bridge-anonymizers` — the `OutboundAnonymizer` and `InboundAnonymizer` Cairo contracts (Scarb workspace member). Build: `scarb build` · Test: `scarb test`. - `packages/bridge-core` — the framework-agnostic TypeScript engine: value-movement orchestrators, key derivation, CCTP integration, and optional React hooks. - `apps/bridge` — a demo web app built on `bridge-core`. See [`CLAUDE.md`](./CLAUDE.md) for the full architecture.

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Idioma del texto original: inglés

2026-07-08

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