> For the complete documentation index, see [llms.txt](https://docs.amoeba.farm/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.amoeba.farm/reference/02-evidence-rules.md).

# Evidence Rules

Evidence makes the oracle challengeable.

V1 should prefer public, repeatable sources and public archive evidence. Private evidence can become a future specialization, but it should not be the default launch path.

## Accepted source categories

| Category                           | Meaning                                                                                  |
| ---------------------------------- | ---------------------------------------------------------------------------------------- |
| Retailer product page              | Public page with a fixed SKU or product and an identifiable posted price.                |
| Distributor catalog page           | Public or reproducible catalog page with fixed part number and price or tier price.      |
| Manufacturer product or store page | Manufacturer page with fixed product and posted value.                                   |
| Market assessment or benchmark     | Recurring public assessment for a fixed RAM/NAND specification or bucket.                |
| Public API endpoint                | API exposing the same public series. It is not independent if it mirrors another source. |

## Rejected source categories

| Category                             | Reason                                                            |
| ------------------------------------ | ----------------------------------------------------------------- |
| Private invoices, broker DMs, emails | Not reproducible enough for V1 challengers.                       |
| Single seller auctions               | Seller, condition, and inventory can shift underneath the source. |
| Search snippets                      | Not stable source records.                                        |
| Pure aggregators                     | Usually duplicate an underlying source.                           |
| Login-only or personalized pricing   | Not publicly reproducible.                                        |
| Copy-pasted numbers                  | No independent evidence trail.                                    |

## Wayback and archives

For public web sources, the cleanest evidence object is a Wayback or archive URL.

The archive should:

* resolve;
* point to the frozen locator;
* show the claimed value;
* match the source definition;
* have a timestamp inside the allowed window.

## Source failure

If a source is temporarily unavailable, the last accepted state carries forward.

If a source becomes permanently non-reproducible, the next monthly source selection process can remove or replace it. Game Mode should not rewrite frozen weights mid-month.


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