Pith Number

pith:VDCDEAWU

pith:2007:VDCDEAWUFMLF57YIFEOSIZT33W

not attested not anchored not stored refs pending

Inhomogeneous Helium Reionization and the Equation of State of the Intergalactic Medium

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

arxiv:0711.0751 v2 · 2007-11-05 · 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{VDCDEAWUFMLF57YIFEOSIZT33W}

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	2026-07-04T17:06:32.044540Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a8c43202d42b165eff08291d24667bdd93ebbd2674249ad70952f2c5da1abe5d

Aliases

arxiv: 0711.0751 · arxiv_version: 0711.0751v2 · doi: 10.48550/arxiv.0711.0751 · pith_short_12: VDCDEAWUFMLF · pith_short_16: VDCDEAWUFMLF57YI · pith_short_8: VDCDEAWU

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/VDCDEAWUFMLF57YIFEOSIZT33W \
  | 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: a8c43202d42b165eff08291d24667bdd93ebbd2674249ad70952f2c5da1abe5d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac2afbf8d5b5fa43b3e9413936eed82d79783ae2459e9456dd2056864957aa9d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-11-05T21:10:51Z",
    "title_canon_sha256": "0d039570b16800b6a0e2fcfe6995a857263c9cdd180d4d970bf73d7652867539"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0711.0751",
    "kind": "arxiv",
    "version": 2
  }
}