Show HN: Trading calculators whose answers can be checked by hand (tradingcalc.io)

A new toolset has been launched, providing advanced trading calculators that emphasize verifiable outputs. Designed for both human traders and AI agents, these calculators cover a range of financial calculations including options pricing, forex pip math, Value at Risk (VaR), and prediction-market odds. Each output is signed with an ECDSA P-256 signature, allowing users to validate results independently. The toolset also includes public test vectors to ensure accuracy and consistency, and daily state hashes recorded on the Solana blockchain to guard against tampering. This initiative is significant for the AI/ML community as it addresses the prevalent issue of "confident wrong answers" in machine learning models, particularly in trading applications. Recent assessments showed that leading models from OpenAI, Anthropic, and Google achieved 97% accuracy on trading math questions, yet still made crucial errors, like overestimating risk (VaR) or misrepresenting losing trades. By providing precise calculations verified against real-world metrics and market standards, these calculators help combat the risks associated with over-reliance on AI-generated financial advice while also facilitating better decision-making among traders through transparent, verifiable data.