In 2025, users moved over $1.3T across chains, driven by yield opportunities, liquidity optimization and building across ecosystems. Cross-chain activity isn’t niche. It’s foundational infra and it’s growing fast. Here’s how Turnkey helps secure cross-chain wallets by design 🧵

1/ What does it mean to be compatible cross-chain? It means your app can move assets and data between chains like Ethereum, Solana and Avalanche, w/o custom logic per chain. This enables chain-agnostic workflows for swaps, liquidity, governance, and more.

2/ There are 3 main categories of cross-chain infra: – Bridges (lock and mint) – Messaging protocols (calldata and state) – Consensus-layer systems (native interoperability)

3/ While cross-chain infra is powerful, it introduces serious security risks. Bridges and messaging protocols introduced more than $1B in losses from 2022-23 alone. Without policy enforcement at the transaction layer, these risks aren’t edge cases. They’re inevitable.

4/ Wallet infra must evolve for cross-chain complexity. Fragmented standards, signature schemes and permission models mean a single flaw can cascade across chains – unless risk is isolated and intent is enforced on every signature.

5/ Turnkey isolates risk by design. Keys live in Trusted Execution Environments (TEEs). Every signature is scoped by chain, contract, method and user – enforced by policy and always deterministic.

6/ Turnkey gives developers the security primitives to scale cross-chain apps with confidence, without compromising speed, control or intent. Read the full blog 👇