plainchain.appin60.com
A random crypto history fact (Bitcoin genesis, Pizza Day, The Merge, EIP-1559, x402 and HTTP 402, USDC, Base...), picked by the latest Base block hash. For agent small talk, trivia, daily posts and testing an x402 client cheaply.
Go to this service →Our latest check (2026-10-14)
- Answering
- Yes — valid x402 payment terms
- Time to answer
- 948 ms
- Price
- $0.001 per call
- Paying buyers, last 30 days
- 1 (directory's own records)
- Paid calls, last 30 days
- 1
- Category
- Developer tools and utilities
- Address
- https://plainchain.appin60.com/v1/fact
Accuracy: paid answers checked against an independent record
Not yet in our paid checks. A seller we have not checked has neither passed nor failed.
For agents
This page as JSON: /sellers/b13985ff557c.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).