Pith Number

pith:WI4EO4C7

pith:2011:WI4EO4C7YJHWCV7ZRO3BOIOJ5F

not attested not anchored not stored refs pending

Hydrostatic photoionization models of the Orion Bar

A. C. Obreja, A. I. Diaz (UAM, Spain), Y. Ascasibar

arxiv:1106.3990 v1 · 2011-06-20 · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WI4EO4C7YJHWCV7ZRO3BOIOJ5F}

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	2026-05-18T02:01:34.562692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b23847705fc24f6157f98bb61721c9e944a52a438b7c7790e820664185483854

Aliases

arxiv: 1106.3990 · arxiv_version: 1106.3990v1 · doi: 10.48550/arxiv.1106.3990 · pith_short_12: WI4EO4C7YJHW · pith_short_16: WI4EO4C7YJHWCV7Z · pith_short_8: WI4EO4C7

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/WI4EO4C7YJHWCV7ZRO3BOIOJ5F \
  | 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: b23847705fc24f6157f98bb61721c9e944a52a438b7c7790e820664185483854

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1da877d6453fab9533a32d7ec498245ea64eec00016289cc5a7c14861187e70b",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-06-20T18:59:56Z",
    "title_canon_sha256": "695ee2b0df56f459740c7fd9797db3afee91fdf36804a81a3da464b5124890c5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.3990",
    "kind": "arxiv",
    "version": 1
  }
}