Across

Across is an intent-based cross-chain bridge. Relayers front funds to users on the destination chain within seconds and are repaid later from a shared liquidity pool, with UMA's optimistic oracle securing the settlement.

Other versions of this protocol: Across V1 (legacy).

Rating B: 1 restriction: Wallet screening. Bridge · Ethereum, Arbitrum, Optimism, Base, Polygon, zkSync, Linea, Scroll, Blast, Mode, Lisk, Unichain, Ink, Soneium, World Chain.

Official app: across.to. Frontend code: private now.

Restrictions

• Geo Block: ToS only. ToS: by IP, at Risk Labs' discretion.
• Feature Block: no.
• Wallet screening: yes. blacklist.risklabs.foundation/api/check/{address} (Risk Labs disallow list) called after wallet connect; the quote API itself still returns a quote for an SDN recipient. Where it runs: API. Fail mode: fail-open (a failed check leaves isBlocked=false).
• VPN / Tor detection: ToS only.
• Terms of Service: across.to/terms-of-service, Last updated 2025-10-22. generic comprehensive US sanctions.

Notes

Across API is public (suggested-fees, available-routes); the app additionally checks the connected wallet against the Risk Labs disallow list. URL note: app.across.to -> across.to. The legacy v1 app is a separate entry (Across V1).

Live checks

• /api/suggested-fees with SDN recipient -> normal quote
• blacklist.risklabs.foundation/api/check (2026-10-10): SDN -> true; control 0x2222…2222 / 0x1111…1111 -> false

Evidence

• across.to/terms-of-service
• web.archive.org/web/20250829200542/https://github.com/across-protocol/frontend
• across.to/assets/useConnectionEVM--HY1OV4u.js
• blacklist.risklabs.foundation/api/check/0x098B716B8Aaf21512996dC57EB0615e2383E2f96

Checked 2026-10-10. All interfaces · Methodology