Pith Number

pith:4NRKMDQO

pith:2003:4NRKMDQO6AYAPJLIQX2DLF6XR4

not attested not anchored not stored refs pending

Ultraviolet Line Emission from Metals in the Low-Redshift Intergalactic Medium

Joop Schaye (IAS), Lars Hernquist (CfA), Steven Furlanetto (Caltech), Volker Springel (MPA)

arxiv:astro-ph/0309736 v2 · 2003-09-26 · 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{4NRKMDQO6AYAPJLIQX2DLF6XR4}

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	2026-07-04T16:51:46.101714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e362a60e0ef03007a56885f43597d78f3755ed924e8616b27ad2c96f93d430e5

Aliases

arxiv: astro-ph/0309736 · arxiv_version: astro-ph/0309736v2 · doi: 10.48550/arxiv.astro-ph/0309736 · pith_short_12: 4NRKMDQO6AYA · pith_short_16: 4NRKMDQO6AYAPJLI · pith_short_8: 4NRKMDQO

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/4NRKMDQO6AYAPJLIQX2DLF6XR4 \
  | 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: e362a60e0ef03007a56885f43597d78f3755ed924e8616b27ad2c96f93d430e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2c31a28391178f2a1bd1c47d59d3297bb81485b788de4b658ccf6b1e3892839",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-09-26T20:14:33Z",
    "title_canon_sha256": "9f9af85b1c435c3de2ad9caa5175170a43c4c06fdc8e57754534e33a7d9cb8e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0309736",
    "kind": "arxiv",
    "version": 2
  }
}