Pith Number

pith:HDGRF6I6

pith:2019:HDGRF6I62QOUZOEFP4K5S4D7MJ

not attested not anchored not stored refs pending

A General Model Validation and Testing Tool

Kamal Youcef-Toumi, Kevin Vanslette, Tony Tohme

arxiv:1908.11251 v2 · 2019-08-29 · stat.ME · physics.data-an · stat.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HDGRF6I62QOUZOEFP4K5S4D7MJ}

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	2026-07-05T00:14:54.514046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

38cd12f91ed41d4cb8857f15d9707f627489ff1f71aa1e72dfac90dfc331f93c

Aliases

arxiv: 1908.11251 · arxiv_version: 1908.11251v2 · doi: 10.48550/arxiv.1908.11251 · pith_short_12: HDGRF6I62QOU · pith_short_16: HDGRF6I62QOUZOEF · pith_short_8: HDGRF6I6

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/HDGRF6I62QOUZOEFP4K5S4D7MJ \
  | 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: 38cd12f91ed41d4cb8857f15d9707f627489ff1f71aa1e72dfac90dfc331f93c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cbe93a6d6a8eb204355381871c090eb38286d0359b18e312e02674702c454a2",
    "cross_cats_sorted": [
      "physics.data-an",
      "stat.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "stat.ME",
    "submitted_at": "2019-08-29T14:18:50Z",
    "title_canon_sha256": "4972ca40c855a3fc2440c9c01293b00d49306ad5a6d6d6206e1c0804d356770d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.11251",
    "kind": "arxiv",
    "version": 2
  }
}