Pith Number

pith:PFH2NMCX

pith:1995:PFH2NMCXEAVTBLTDWIEAFWMUAS

not attested not anchored not stored refs pending

Radiative Transfer in a Clumpy Universe: II. The Utraviolet Extragalactic Background

Francesco Haardt, Piero Madau

arxiv:astro-ph/9509093 v1 · 1995-09-19 · 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{PFH2NMCXEAVTBLTDWIEAFWMUAS}

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

Ultraviolet diversity of Little Red Dots as a probe for direct-collapse black hole ages

Receipt and verification

First computed	2026-07-04T15:58:06.717914Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

794fa6b057202b30ae63b20802d994049c9a80c15ca4650cda892fff8de2a6cc

Aliases

arxiv: astro-ph/9509093 · arxiv_version: astro-ph/9509093v1 · doi: 10.48550/arxiv.astro-ph/9509093 · pith_short_12: PFH2NMCXEAVT · pith_short_16: PFH2NMCXEAVTBLTD · pith_short_8: PFH2NMCX

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/PFH2NMCXEAVTBLTDWIEAFWMUAS \
  | 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: 794fa6b057202b30ae63b20802d994049c9a80c15ca4650cda892fff8de2a6cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52ec2de200e20b6c7baf33fc717c2e1b9e35b173f1b37e09b3194de6cf5cc82a",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1995-09-19T10:12:34Z",
    "title_canon_sha256": "e9ed64347a260f1fbb261f43136197609e1f028159244c2900f44e847703cba1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9509093",
    "kind": "arxiv",
    "version": 1
  }
}