Pith Number

pith:HLWWETI3

pith:2011:HLWWETI3ELIE4BOVQIEJ7XRG4N

not attested not anchored not stored refs pending

The Compton-Thick Seyfert 2 Nucleus of NGC3281: Torus Constraints from the 9.7$\mu$m Silicate Absorption

A. C. Carciofi, A. Rodriguez-Ardila, C. Winge, Dinalva A. Sales, M. G. Pastoriza, R. Riffel

arxiv:1106.5731 v2 · 2011-06-28 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HLWWETI3ELIE4BOVQIEJ7XRG4N}

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	2026-05-18T02:01:29.776301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3aed624d1b22d04e05d582089fde26e36838aa255e8d593008b5f792c2a5a82f

Aliases

arxiv: 1106.5731 · arxiv_version: 1106.5731v2 · doi: 10.48550/arxiv.1106.5731 · pith_short_12: HLWWETI3ELIE · pith_short_16: HLWWETI3ELIE4BOV · pith_short_8: HLWWETI3

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/HLWWETI3ELIE4BOVQIEJ7XRG4N \
  | 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: 3aed624d1b22d04e05d582089fde26e36838aa255e8d593008b5f792c2a5a82f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ef4dd07e3ebd0f6641c99095efdf57c6ee2700f37c1671ec48f3fee73e810cb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-06-28T17:24:44Z",
    "title_canon_sha256": "4427410d38e2d2e040d689c43450658bc22ed693cd85660c4d1bfbffe07e38d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.5731",
    "kind": "arxiv",
    "version": 2
  }
}