# QuipNetwork/hashsigs-solidity

Solidity contracts implementing hash based post quantum signatures

Repository: https://github.com/QuipNetwork/hashsigs-solidity
Canonical: https://ross.abutalabs.com/products/hashsigs-solidity
Language: Solidity
License: AGPL-3.0
License Family: copyleft
Last push: 2026-08-07T03:57:12+00:00

## Health v2 (maintenance only)
Score: 63/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 96, release rhythm 35, longevity 38
- inputs: {"age_days": 532, "days_push": 26, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 11216, forks 34 (observed 2026-08-28T04:10:46.444400+00:00)

## What it is
A Solidity implementation of the Winternitz One-Time Signature Plus (WOTS+) scheme, a hash-based post-quantum signature algorithm. It enables on-chain verification of quantum-resistant signatures in Ethereum smart contracts.

## Use cases
- verify post-quantum signatures on-chain in solidity
- implement wots+ signature scheme in smart contracts
- make ethereum contracts resistant to quantum attacks
- hash-based signature verification for blockchain
- test wots+ implementation with foundry

## When to choose
- you need quantum-resistant signature verification inside solidity contracts
- you want a pure-solidity WOTS+ implementation with foundry tests
- you are building post-quantum crypto primitives for EVM chains

## When to avoid
- you need a general-purpose wallet or full post-quantum signature stack, not just on-chain verification
- you need production-grade audited cryptography without additional security review
- you are not working in a solidity/EVM environment

## Facets
- artifact type: library
- maturity: active
- function: cryptography, security, sdk
- domain: blockchain, security
- platform: -
- tags: post-quantum, wots-plus, hash-based-signatures, smart-contracts, foundry, signature-verification, cryptography, ethereum, solidity, web3

## Member repositories
- QuipNetwork/hashsigs-solidity (main) score 63

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:46.444400+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:16:26.962584+00:00, confidence not recorded.
  - readme: https://github.com/QuipNetwork/hashsigs-solidity (fetched 2026-08-28T04:10:46.444400+00:00, sha 5b8b14aa987e)
- Data as of 2026-08-30T08:39:29.467469+00:00.