No download · runs in your browser

Read One Card

The data silos are Hollerith cards: deterministic, so reading one needs no model call. Paste a card's address or number, or drop a card file, and this page fetches and shows it, with its provenance chain, checked in your own browser. Nothing you paste or drop here is uploaded anywhere.

Card number (qid)

One of the 300 published proof cards from Prove It Here. Enter its number.

Card address (hex:...)

This is how a card from the app (a Prove It card) is identified.

Drop or paste a card file

Accepts a Prove It card, one JSON object. This page recomputes its address from its own contents and tells you whether it still matches.

Drop a card .json file here, or use the file picker, or paste the JSON text below.