Pith Number

pith:EQJDKPWH

pith:2026:EQJDKPWHWTV32CGQ4LULTAUGXP

not attested not anchored not stored refs pending

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

Andrealuna Pizzetti, Indrani Pal, Isaiah S. Cox, Marco Ajello, N\'uria Torres-Alb\`a, Stefano Marchesi, Vittoria E. Gianolli, Xiurui Zhao

arxiv:2607.28501 v1 · 2026-07-30 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EQJDKPWHWTV32CGQ4LULTAUGXP}

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	2026-07-31T01:38:16.460798Z
Builder	pith-number-builder-2026-05-17-v1
Signature	unsigned_v0
Schema	pith-number/v1.0

Canonical hash

2412353ec7b4ebbd08d0e2e8b98286bbc92bf691f153c871f34b5841fc095903

Aliases

arxiv: 2607.28501 · arxiv_version: 2607.28501v1 · doi: 10.48550/arxiv.2607.28501 · pith_short_12: EQJDKPWHWTV3 · pith_short_16: EQJDKPWHWTV32CGQ · pith_short_8: EQJDKPWH

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/EQJDKPWHWTV32CGQ4LULTAUGXP \
  | 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: 2412353ec7b4ebbd08d0e2e8b98286bbc92bf691f153c871f34b5841fc095903

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a7bfd0b2e9d782d637551c92f605becce9a9c5a017e0d3acf828e1e3520d647",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-07-30T16:45:53Z",
    "title_canon_sha256": "b3ab0609cd1a4a5c22bbdb49190b521bef10db02fe758718921aea3e47a0c467"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.28501",
    "kind": "arxiv",
    "version": 1
  }
}