Pith Number

pith:YZHQRTXG

pith:2025:YZHQRTXG4P7IJ7QYQ3GEOHBGLA

not attested not anchored not stored refs pending

From Hugging Face to GitHub: Tracing License Drift in the Open-Source AI Ecosystem

Ahmed E. Hassan, Bram Adams, Gopi Krishnan Rajbahadur, Hao Li, James Jewitt

arxiv:2509.09873 v1 · 2025-09-11 · cs.SE · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YZHQRTXG4P7IJ7QYQ3GEOHBGLA}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

2 papers in Pith

Towards Imputation of Pre-Trained Language Model Metadata using Semantic Fingerprinting

A governance horizon for ethical-use constraints in open-weight AI models

Receipt and verification

First computed	2026-07-05T12:09:51.092513Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c64f08cee6e3fe84fe1886cc471c26581b98e7b2dc830498cf022ad62c44474a

Aliases

arxiv: 2509.09873 · arxiv_version: 2509.09873v1 · doi: 10.48550/arxiv.2509.09873 · pith_short_12: YZHQRTXG4P7I · pith_short_16: YZHQRTXG4P7IJ7QY · pith_short_8: YZHQRTXG

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/YZHQRTXG4P7IJ7QYQ3GEOHBGLA \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c64f08cee6e3fe84fe1886cc471c26581b98e7b2dc830498cf022ad62c44474a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f29619c267222d3eaa9a24bf4722ce37c8f595d1ebdd3df780aa1b7394428848",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2025-09-11T21:46:20Z",
    "title_canon_sha256": "9a99f944040cef5aab56850c59d481893d40a5a6f8b9733e63e0cd71873041da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.09873",
    "kind": "arxiv",
    "version": 1
  }
}