Pith Number

pith:K4WXFUI4

pith:2014:K4WXFUI4YOKDQ35P444JNA25JD

not attested not anchored not stored refs pending

The photoheating of the intergalactic medium in synthesis models of the UV background

Ewald Puchwein, Francesco Haardt, George D. Becker, James S. Bolton, Martin G. Haehnelt, Piero Madau

arxiv:1410.1531 v2 · 2014-10-06 · astro-ph.CO · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K4WXFUI4YOKDQ35P444JNA25JD}

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	2026-05-18T01:31:46.350096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

572d72d11cc394386fafe73896835d48e90abf60a21a306ac2144b4d2236a9d5

Aliases

arxiv: 1410.1531 · arxiv_version: 1410.1531v2 · doi: 10.48550/arxiv.1410.1531 · pith_short_12: K4WXFUI4YOKD · pith_short_16: K4WXFUI4YOKDQ35P · pith_short_8: K4WXFUI4

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/K4WXFUI4YOKDQ35P444JNA25JD \
  | 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: 572d72d11cc394386fafe73896835d48e90abf60a21a306ac2144b4d2236a9d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c228cbada8b35acb4e72b321711b468c85594812cf52c2a47ce25a3762f03c4",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-10-06T20:00:01Z",
    "title_canon_sha256": "0dcd3cc34771db8854f93c470746666efb7ca8b5c1a3457e962b40f8a6266db0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.1531",
    "kind": "arxiv",
    "version": 2
  }
}