Live Entity Verification API

Gold402 Verified. Hand-reviewed and on the curated list — curation is the bar. The stamp means a human read this entry and the endpoint answered when we knocked. It is not a delivery test: we have not paid this service and graded what came back, so treat it as "reachable and speaks the protocol," never as "this is worth the money."

Cross-signal Bayesian corroboration of entity existence: fuses WHOIS, Certificate Transparency, Wayback Machine, and DNS operational maturity into a calibrated hallucination verdict with a confidence score. $0.01-$0.05 USDC on Base Sepolia (testnet) via x402, tiered per route. Example: `POST /verify-entity-existence-cross-signal {"domain":"example.com","entity_name":"Example Corp"}`. ([OpenAPI](https://live-entity-verification-production.up.railway.app/openapi.json)) ([Agent Card](https://live-entity-verification-production.up.railway.app/.well-known/agent-card.json)) ([GitHub](https://github.com/nexus-mcp-infra/live-entity-verification-sdk))