[b0bbi]

You are 100% right about pre-2014 BTC. Any suggestion where to download trusted prices?

Regarding the date format - it can really cause confusion. Let me explaine. The "calculator" date format is "YYYY-MM-DD" (ISO 8601). But the input field's date format adapts based on your device settings. For better UX.

[eru]

> Any suggestion where to download trusted prices?

Ask your friendly neighbourhood LLM for sources. :)