Pith Number

pith:D7GD4API

pith:1999:D7GD4APIGYBV74GSKWQNB2GUO7

not attested not anchored not stored refs pending

The thermal history of the intergalactic medium

George Efstathiou (Cambridge), Joop Schaye (Cambridge), Michael Rauch (ESO), Tom Theuns (MPA), Wallace L.W. Sargent (Caltech)

arxiv:astro-ph/9912432 v2 · 1999-12-20 · 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{D7GD4APIGYBV74GSKWQNB2GUO7}

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.

Cited by

1 paper in Pith

Patchy Helium and Hydrogen Reionization from the Kinetic Sunyaev-Zel'dovich Effect and Galaxies

Receipt and verification

First computed	2026-07-04T16:12:02.974685Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fcc3e01e836035ff0d255a0d0e8d477d8658697df11fc83cb5a3d6cba171e99

Aliases

arxiv: astro-ph/9912432 · arxiv_version: astro-ph/9912432v2 · doi: 10.48550/arxiv.astro-ph/9912432 · pith_short_12: D7GD4APIGYBV · pith_short_16: D7GD4APIGYBV74GS · pith_short_8: D7GD4API

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/D7GD4APIGYBV74GSKWQNB2GUO7 \
  | 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: 1fcc3e01e836035ff0d255a0d0e8d477d8658697df11fc83cb5a3d6cba171e99

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1164c61d9eee41df4b6aa7ddc102c46024ff890a92a862a81e5b242ca7f55d5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-20T20:58:19Z",
    "title_canon_sha256": "6b277aa2da608f215395bfb3752bb918e6e41fe18bbc4dee93181efbfb525a55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912432",
    "kind": "arxiv",
    "version": 2
  }
}