Pith Number

pith:OM7Q4W6Y

pith:2002:OM7Q4W6YOJTOFHB7V2BH7MPRJB

not attested not anchored not stored refs pending

Metallicity of the Intergalactic Medium Using Pixel Statistics: I. Method

Anthony Aguirre, Joop Schaye, Tom Theuns

arxiv:astro-ph/0207119 v1 · 2002-07-04 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OM7Q4W6YOJTOFHB7V2BH7MPRJB}

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	2026-05-18T01:07:44.652647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

733f0e5bd87266e29c3fae827fb1f148707995ea67d9b3f92269833a7fddc210

Aliases

arxiv: astro-ph/0207119 · arxiv_version: astro-ph/0207119v1 · doi: 10.48550/arxiv.astro-ph/0207119 · pith_short_12: OM7Q4W6YOJTO · pith_short_16: OM7Q4W6YOJTOFHB7 · pith_short_8: OM7Q4W6Y

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/OM7Q4W6YOJTOFHB7V2BH7MPRJB \
  | 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: 733f0e5bd87266e29c3fae827fb1f148707995ea67d9b3f92269833a7fddc210

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bfbbce4200dbbd9f3d6d6877789a36af8ffff25ef4722f86bab7509953e20c4b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-07-04T15:51:14Z",
    "title_canon_sha256": "518e369a4f6a6033ed2aecc50d32b7a4e357ce96262a71e3e0dd66e18ee53971"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0207119",
    "kind": "arxiv",
    "version": 1
  }
}