Stablecoins are becoming a key infrastructure in the Web3 identity layer. Why? Because the real bottleneck in user onboarding is not technology, but entry costs and process complexity. Stablecoins address this pain point—they reduce the friction costs of cross-chain authentication. From real-world cases, users who have already completed identity mapping are often the first to adopt stablecoins as a bridge for cross-platform interactions. The logic behind this is clear: once identities are reusable, asset liquidity will explode accordingly.