---
title: "Correction: Cardano's D3.1 deliverable is a SIP, not a CIP"
description: We described Cardano's D3.1 migration deliverable as a CIP. Input Output's own wording is a SIP. The profile now matches the source. No score changed.
url: "https://hardyindex.com/news/cardano-d3-1-deliverable-named-sip"
section: What changed
type: index-change
published: 2026-08-15
updated: 2026-08-15
chains: cardano
methodology_version: 1.4
---

# Correction: Cardano's D3.1 deliverable is a SIP, not a CIP

**On 13 August we corrected Cardano's profile, which said research deliverable D3.1 would publish a migration strategy as a Cardano Improvement Proposal. Input Output's own wording calls it a SIP. The profile and roadmap now use the source's term. This is a naming correction only: no score, tier or evidence changed, and no code moved.**

*Published 15 August 2026. The rating below is current as of 2 October 2026. This is a security-readiness assessment, not investment advice.*

A wording fix made on 13 August, so the term we use matches the term its research program uses.

## What we fixed

Our Cardano profile described deliverable D3.1 of the chain's research program as publishing a post-quantum migration strategy in the form of a Cardano Improvement Proposal, usually shortened to CIP. That is the familiar name for Cardano's public proposal process.

Input Output, the research and engineering firm behind Cardano, uses a different term for this deliverable in its own write-up: a SIP. We had translated it into the more common label. That was our edit, not theirs, and it is the kind of small drift that makes a claim harder to check against the source.

The profile text and the roadmap entry now use the term the source uses. If you want to compare our wording to the original, the link is in the sources below.

**Where this stands today.**

- [Cardano](https://hardyindex.com/chains/cardano): Tier 3: Committed, Hardy Score 37.5 of 100.

As rated by the Hardy Index, current as of 2 October 2026. Ratings change when the evidence does, and every change is recorded at https://hardyindex.com/changelog.md.

## Where to go next

- [Cardano: the full rating](https://hardyindex.com/chains/cardano.md): every dimension score, with the source behind each one.
- [Moving to a quantum-ready chain](https://hardyindex.com/guides/moving-to-a-quantum-ready-chain.md): If you have decided you want assets on a chain built for the quantum era, this is how that works in practice, and the honest case for not doing it.
- [Which is the most quantum-resistant blockchain?](https://hardyindex.com/guides/most-quantum-resistant-blockchain.md): One question, one answer, with the working shown. This page is a summary of the Hardy Index, which is the live ranking behind it.

## Sources

Every dated event above carries its own primary source. These are those sources, checked on the dates shown.

1. [Cardano Vision 2026: the research program securing Cardano's next era](https://www.iog.io/news/cardano-vision-2026-the-research-program-securing-cardano): Input | Output (IOG) (primary, checked 13 August 2026)
2. [Cardano Vision 2026: Human Centred, Scalable, Post Quantum Secure (governance action)](https://gov.tools/outcomes/governance_actions/5ad10ad39f49a0f93ac91e70482f114fdbcbc05b20ac774dbe23a82efbcb820a): Cardano GovTool (primary, checked 11 August 2026)
3. [CIP-19: Cardano Addresses](https://cips.cardano.org/cip/CIP-19): Cardano Improvement Proposals (primary, checked 13 August 2026)

---
Cite as: The Hardy Index, "Correction: Cardano's D3.1 deliverable is a SIP, not a CIP", https://hardyindex.com/news/cardano-d3-1-deliverable-named-sip, published 15 August 2026.