Summary: Satora Swaps is a docs-first Bitcoin-to-EVM swap stack that is better cataloged as atomic-swap and settlement infrastructure than as a simple bridge widget or wallet feature. Its official docs describe instant, trustless swaps from Bitcoin into EVM tokens using Lightning, Arkade, or on-chain Bitcoin, while its GitHub org and repos show a broader operating surface: HTLC smart contracts deployed across Polygon, Ethereum, and Arbitrum; gasless EIP-712 redeem and refund flows; a TypeScript SDK plus Rust core; and application patterns for receiving BTC as stablecoins, sending stablecoins as BTC, payouts, and DeFi access. The clearest categorization clue in this pass is that Satora is packaging a reusable developer control plane for moving value between Bitcoin rails and EVM assets without requiring custodial handoff.
What it does:
Provides a TypeScript SDK and REST-facing integration surface for creating trustless swaps between Bitcoin and EVM tokens, with docs recommending the SDK as the primary production path
Supports inbound Bitcoin over Lightning, Arkade, or on-chain rails and outbound delivery into EVM tokens across Polygon, Ethereum, and Arbitrum
Uses HTLC-based atomic-swap contracts and Bitcoin-compatible SHA-256 preimage hashes so redemption and refund logic can coordinate across Bitcoin and EVM environments
Implements gasless claim and refund flows on the EVM side via EIP-712 signatures, Permit2-based token approvals, and relayer-submitted transactions
Exposes application patterns such as BTC-to-stablecoin receiving, stablecoin-to-BTC sending, treasury payouts, and routing Bitcoin liquidity into on-chain DeFi protocols
Publishes an AI-friendly docs corpus with llms.txt / llms-full.txt, plus open-source contract, SDK, frontend, BTCPay plugin, and sample repos under the legacy lendasat GitHub org
Key claims:
The docs homepage says Satora Swaps (formerly LendaSwap) enables “instant, trustless swaps between Bitcoin (via Lightning, Arkade, or on-chain) and EVM tokens on Polygon, Ethereum, and Arbitrum”
The docs say Satora is designed for developers and power users who need a “seamless, non-custodial bridge between Bitcoin and stablecoins,” emphasizing atomic swaps, gasless claims, and an idiomatic TypeScript SDK
The getting-started docs frame the product around reusable app building blocks, including use cases to receive BTC and auto-convert to stablecoins, send stablecoins and deliver BTC, run payouts, and bridge BTC into DeFi
The integration FAQ says the TypeScript SDK is the recommended production surface because it handles wallet management, state tracking, error recovery, and gasless claiming, while the REST API is available but not the preferred production path
The integration FAQ also says no authentication is required to create or complete swaps, and that stuck swaps are recoverable through timelocks, SDK error handling, refunds, and seed-based recovery
The lendaswap-contracts README says the contracts are deployed on Polygon, Ethereum, and Arbitrum and support HTLC-based atomic swaps, arbitrary DEX-call composition, EIP-712 gasless redeem/refund, Permit2 approvals, and Bitcoin-compatible SHA-256 preimage hashes
The lendaswap-sdk README says the monorepo includes a platform-agnostic Rust core, backend API client bindings, and a pure TypeScript SDK with HD key management and multiple storage adapters, which is a strong signal that the project is operating as a developer-facing settlement/control plane rather than only a consumer UI
There is meaningful brand drift to note: the current docs present the product as Satora Swaps, but the official GitHub org and repositories still live under lendasat / lendaswap, which helps recover the project’s broader code surface and product history
Whitepaper: No canonical standalone Satora Swaps or LendaSwap whitepaper/litepaper surfaced in this pass. The clearest current sources of truth were the official docs corpus plus the first-party lendasat GitHub organization and repos; see ../whitepapers/satora-swaps-primary-sources-2026-05-02.md.