Pith Number

pith:3PDJUOWU

pith:2009:3PDJUOWUOA65QWGNNQJLKW2PEB

not attested not anchored not stored refs pending

The Equation of State of the Intergalactic Medium After Hydrogen Reionization

S. Peng Oh (UCSB), Steven Furlanetto (UCLA)

arxiv:0901.1888 v1 · 2009-01-13 · astro-ph.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{3PDJUOWUOA65QWGNNQJLKW2PEB}

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	2026-05-18T02:15:02.433098Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbc69a3ad4703dd858cd6c12b55b4f205362fb26b2ba71433628e238ba5e7c09

Aliases

arxiv: 0901.1888 · arxiv_version: 0901.1888v1 · doi: 10.48550/arxiv.0901.1888 · pith_short_12: 3PDJUOWUOA65 · pith_short_16: 3PDJUOWUOA65QWGN · pith_short_8: 3PDJUOWU

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/3PDJUOWUOA65QWGNNQJLKW2PEB \
  | 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: dbc69a3ad4703dd858cd6c12b55b4f205362fb26b2ba71433628e238ba5e7c09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85526653ba13df956bf98b86c2792709b8a573fa0d09f98cee3235a3ce7652b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-01-13T21:57:07Z",
    "title_canon_sha256": "972a322d7527ecc9712d5213bed1126343e7a022cba397e238c58cc54e020b6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.1888",
    "kind": "arxiv",
    "version": 1
  }
}