Pith Number

pith:CPHUKFHU

pith:2001:CPHUKFHUQR765N4C6WNFWZWIS7

not attested not anchored not stored refs pending

Heating and Ionization of the Intergalactic Medium by an Early X-Ray Background

Aparna Venkatesan, Boulder), J. Michael Shull (University of Colorado, Mark L. Giroux

arxiv:astro-ph/0108168 v1 · 2001-08-09 · 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{CPHUKFHUQR765N4C6WNFWZWIS7}

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

High-Redshift Signatures from the Cosmic Dawn and the Epoch of Reionization

Receipt and verification

First computed	2026-07-04T16:23:56.603472Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13cf4514f4847feeb782f59a5b66c897c4d564655954b36376650d8c5a3070aa

Aliases

arxiv: astro-ph/0108168 · arxiv_version: astro-ph/0108168v1 · doi: 10.48550/arxiv.astro-ph/0108168 · pith_short_12: CPHUKFHUQR76 · pith_short_16: CPHUKFHUQR765N4C · pith_short_8: CPHUKFHU

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/CPHUKFHUQR765N4C6WNFWZWIS7 \
  | 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: 13cf4514f4847feeb782f59a5b66c897c4d564655954b36376650d8c5a3070aa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8d872147d90d7649f1b501c34e231437357d19f5eecc6a6c55890c3b31d5c5e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-08-09T20:25:44Z",
    "title_canon_sha256": "710baca9b12d99e0f8e55d470b09a0dd5a4dc5f389740c293060ec3debe3dcea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0108168",
    "kind": "arxiv",
    "version": 1
  }
}