Pith Number

pith:7KNFE43C

pith:2014:7KNFE43CVB2MWQNKBLQNVIGX2I

not attested not anchored not stored refs pending

The soft X-ray emission of Ark 120. XMM-Newton, NuSTAR, and the importance of taking the broad view

A.C. Fabian, A. Lohfink, A. Marinucci, C.J. Hailey, C.S. Reynolds, D.J. Walton, D. Stern, F.A. Harrison, F.E. Christensen, F. Fuerst, G. Matt, L.W. Brenneman, M. Cappi, M. Elvis, M. Guainazzi, M. Parker, P. Arevalo, S.E. Boggs, W. W. Craig, W. W. Zhang

arxiv:1401.5235 v1 · 2014-01-21 · 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{7KNFE43CVB2MWQNKBLQNVIGX2I}

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	2026-05-18T01:45:18.522426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa9a527362a874cb41aa0ae0daa0d7d20f7c3f46af1ed1e2e51f46a70583dd22

Aliases

arxiv: 1401.5235 · arxiv_version: 1401.5235v1 · doi: 10.48550/arxiv.1401.5235 · pith_short_12: 7KNFE43CVB2M · pith_short_16: 7KNFE43CVB2MWQNK · pith_short_8: 7KNFE43C

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/7KNFE43CVB2MWQNKBLQNVIGX2I \
  | 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: fa9a527362a874cb41aa0ae0daa0d7d20f7c3f46af1ed1e2e51f46a70583dd22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6995261ddd5a678f840259d72962a9dbe1d848f8b75ca0c5d0de373493d1291f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-01-21T09:40:36Z",
    "title_canon_sha256": "8c57ecb4ec44cb3e5aa12d6accf4c1cbbe89e7a98f43d1001566b016cf4a118f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.5235",
    "kind": "arxiv",
    "version": 1
  }
}