# Live framework test

On 26 October 2026 at19:11 UTC this integration invoked the actual LangChain tool against the fixed Blockchain IQ brief endpoint. One EIP-3009 authorization and two HTTP requests produced a successful API response.

- Cost:0.01 native USDC on Base.
- Payer:0x781eb433ff788705080254c6f510df16d37b0c44.
- Provider-reported transaction:0x42b0711d30b89c07459d66c1bf04fbf354540fbd91e02d4c31769c61fcae8809.
- Network:eip155:8453.

The response header is provider-reported evidence. Independent receipt verification is tracked separately; this file claims no chain finality or bounty acceptance. The provider can match the payer and hash against its purchase log. Paid market data, wallet keys, and payment signatures are not published. Offline tests use synthetic data and mock signers.