Pith Number

pith:5S2LWYCV

pith:2012:5S2LWYCV43NYIBIXQOUEAUSEHS

not attested not anchored not stored refs pending

X-ray spectral analysis of the low-luminosity active galactic nucleus NGC 7213 using long XMM-Newton observations

D. Emmanoulopoulos, F. Nicastro, I. E. Papadakis, I. M. McHardy

arxiv:1212.2853 v1 · 2012-12-12 · astro-ph.HE · 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{5S2LWYCV43NYIBIXQOUEAUSEHS}

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	2026-05-18T01:52:39.527934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ecb4bb6055e6db84051783a84052443c9a1fde46ee32987ec65c6a261107483f

Aliases

arxiv: 1212.2853 · arxiv_version: 1212.2853v1 · doi: 10.48550/arxiv.1212.2853 · pith_short_12: 5S2LWYCV43NY · pith_short_16: 5S2LWYCV43NYIBIX · pith_short_8: 5S2LWYCV

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/5S2LWYCV43NYIBIXQOUEAUSEHS \
  | 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: ecb4bb6055e6db84051783a84052443c9a1fde46ee32987ec65c6a261107483f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f479b908ac5ef900d249a0bb3e3d59f42e3d9299c1f17e469b962c3386f9f45f",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-12-12T15:59:07Z",
    "title_canon_sha256": "72d8c2c6774599c725a66e1104aac1083ed784f364ebc683c654e68242212c2c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.2853",
    "kind": "arxiv",
    "version": 1
  }
}