---
title: canoncheck
emoji: 🔁
colorFrom: yellow
colorTo: gray
sdk: gradio
sdk_version: 6.19.0
app_file: app.py
pinned: false
license: apache-2.0
short_description: Cross-language canonical JSON + sha256/keccak256 (RFC 8785)
---

# canoncheck

RFC 8785 canonical JSON with matching Python and JS implementations. Paste a record, get the
canonical form and its sha256 / keccak256. Duplicate keys and NaN/Infinity are rejected.

`pip install canoncheck` — source: https://github.com/MarkovianProtocol/canoncheck

## Conformance

The AXES Golden Trace conformance ruling ([magentixai/axes#6](https://github.com/magentixai/axes/issues/6))
adopted this vector layout and the integer-minor-units numeric argument. The v2 set — money as
`Amount{value, decimals, asset}` in integer minor units, ratios out of hash scope, RFC 8785 — is at
[vectors-axes-v2/](https://github.com/MarkovianProtocol/canoncheck/tree/main/vectors-axes-v2):
15 cases, Python and Node byte-identical.

Part of the [Markovian Protocol](https://markovianprotocol.com) stack: the determinism
substrate under provenance and resolution. A receipt or verdict is only recomputable by a
third party if everyone canonicalizes the record the same way first.