Pith Number

pith:ULC37EYE

pith:2026:ULC37EYESUKEID4YLMMZ3R2ZFZ

not attested not anchored not stored refs pending

A Large-Scale Measurement of AI Bill of Materials Completeness in Hugging Face Models

Ahmed Ryan, Md Erfan, Md Rayhanur Rahman

arxiv:2607.17242 v1 · 2026-07-19 · 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{ULC37EYESUKEID4YLMMZ3R2ZFZ}

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.

Receipt and verification

First computed	2026-07-21T01:21:23.483545Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a2c5bf93049514440f985b199dc7592e6c05a65b18855e6a39f0b0310eda9d98

Aliases

arxiv: 2607.17242 · arxiv_version: 2607.17242v1 · doi: 10.48550/arxiv.2607.17242 · pith_short_12: ULC37EYESUKE · pith_short_16: ULC37EYESUKEID4Y · pith_short_8: ULC37EYE

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/ULC37EYESUKEID4YLMMZ3R2ZFZ \
  | 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: a2c5bf93049514440f985b199dc7592e6c05a65b18855e6a39f0b0310eda9d98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8cce217c8cbfc8f5f3c1b1258e309626e9049f5e9fc3631cb535ee9bbe00816a",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2026-07-19T13:20:09Z",
    "title_canon_sha256": "dc11c5d68ad6e68095e0c92c534b6972eef8f3da6eb04bb1a1c01b7376ba1004"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.17242",
    "kind": "arxiv",
    "version": 1
  }
}