Pith Number

pith:TNSDG4IW

pith:1999:TNSDG4IWMUU6FTEZTRIQ6FJ22V

not attested not anchored not stored refs pending

Beyond the standard model for the cosmic X-ray background

G. Risaliti, M. Salvati, R. Gilli

arxiv:astro-ph/9904422 v1 · 1999-04-30 · 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{TNSDG4IWMUU6FTEZTRIQ6FJ22V}

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

X-ray Absorption Variability in NGC 1142: Another Constraint on the Nature of the Torus/Broad-Line Region in Active Galactic Nuclei

Receipt and verification

First computed	2026-07-04T14:16:41.515103Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b643371166529e2cc999c510f153ad5432f3a0dddb82940d67db6e61b716a69

Aliases

arxiv: astro-ph/9904422 · arxiv_version: astro-ph/9904422v1 · doi: 10.48550/arxiv.astro-ph/9904422 · pith_short_12: TNSDG4IWMUU6 · pith_short_16: TNSDG4IWMUU6FTEZ · pith_short_8: TNSDG4IW

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/TNSDG4IWMUU6FTEZTRIQ6FJ22V \
  | 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: 9b643371166529e2cc999c510f153ad5432f3a0dddb82940d67db6e61b716a69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9c6c6a3f88641a488d9033c0c23633b2a95a229e875742250aa6b6dac5cfdd0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-04-30T16:04:24Z",
    "title_canon_sha256": "dc754dbd2000cff7dd23ebd7b90caa751a7f480087245ce29580bd8718656f08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9904422",
    "kind": "arxiv",
    "version": 1
  }
}