Pith Number

pith:ZUKBC572

pith:1998:ZUKBC572YPMU5WNC6XWPP7JPI2

not attested not anchored not stored refs pending

Contribution of Galaxies to the Background Hydrogen-Ionizing Flux

Biman B. Nath, Bruno Guiderdoni, Julien E. G. Devriendt, Shiv K. Sethi

arxiv:astro-ph/9804086 v1 · 1998-04-08 · 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{ZUKBC572YPMU5WNC6XWPP7JPI2}

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	2026-05-18T01:07:37.640912Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd141177fac3d94ed9a2f5ecf7fd2f46b1dd2a004113c27d3ce79a5bdcef99d5

Aliases

arxiv: astro-ph/9804086 · arxiv_version: astro-ph/9804086v1 · doi: 10.48550/arxiv.astro-ph/9804086 · pith_short_12: ZUKBC572YPMU · pith_short_16: ZUKBC572YPMU5WNC · pith_short_8: ZUKBC572

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/ZUKBC572YPMU5WNC6XWPP7JPI2 \
  | 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: cd141177fac3d94ed9a2f5ecf7fd2f46b1dd2a004113c27d3ce79a5bdcef99d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd7b54e4727e64f641aec4d703b35e8ba566e48854e861fc6458d01a61d61005",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-04-08T12:48:06Z",
    "title_canon_sha256": "3f1b38b13f2eadf08982e97a47fe1da1b1a3555f266e80bf59d088800e36cc92"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9804086",
    "kind": "arxiv",
    "version": 1
  }
}