Summary: Peach Bitcoin is a mobile P2P bitcoin marketplace with real operator surfaces behind the app. The useful bits are signed-key auth, searchable offers, escrowed contract flow, encrypted payment-data exchange, and the long local-payment-method catalog — not the no-KYC posture by itself.
What it does:
Operates a peer-to-peer Bitcoin marketplace positioned as non-custodial and no-KYC, available on iOS, Android, APK, and a newer web surface
Exposes a public API for market prices, trading-pair data, fee estimates, system status, and supported payment-method metadata without credentials
Uses signed public-key authentication for private account access, with token issuance tied to a challenge message and signature from the user’s Bitcoin-associated key
Provides searchable buy and sell offers, user-specific offer management, and contract lifecycle endpoints around escrowed trades
Handles contract data that includes escrow addresses, PSBT-style release flows, encrypted payment data, dispute state, and counterparty rating fields
Maintains a broader first-party engineering surface on GitHub including the mobile app, web app, API docs, API wrapper, and a Peach Improvement Proposals repository
Key claims:
The public website content describes Peach as a place to “Buy and sell Bitcoin peer-to-peer without KYC” and calls it a “non-custodial mobile marketplace for private, anonymous Bitcoin transactions,” but the note is cleaner when it stays on the trading-control surface rather than the privacy slogan.
The API docs introduction says Peach splits its API into public and private endpoints, with public market data accessible without credentials and private data unlocked via an auth token obtained by presenting a public key plus signed message; that signed-key auth flow is one of the clearest indications this is real marketplace middleware, not just an app shell.
The public system/info docs show Peach publishing payment-method metadata, escrow fee information, and app-version constraints through the API itself, and the payment-method type definitions span local bank rails, payment apps, gift-card-like methods, Lightning (lnurl), and Liquid. The trading-rail catalog is part of the product.
The offer APIs expose searchable buy and sell offers with premium sorting, payment-method filters, and escrow fields, while the private contract APIs expose escrow addresses, release PSBTs, encrypted payment data, dispute states, and rating flows. That is the reason to keep the note.
The GitHub organization reinforces the control-plane read by exposing the mobile app, web app, API docs, API wrapper, batching software, and a Peach Improvement Proposals repo as first-party public surfaces.
Whitepaper: No canonical standalone Peach Bitcoin whitepaper or litepaper surfaced in this pass. The clearest current sources of truth were the official website content repository, the official API docs, and the Peach GitHub organization; see ../whitepapers/peach-bitcoin-primary-sources-2026-05-03.md.