Pith Number

pith:LETYXZHT

pith:2013:LETYXZHTNOF5R67YD7D6STP756

not attested not anchored not stored refs pending

Long-term monitoring of PKS 0537-441 with Fermi-LAT and multiwavelength observations

Astronomy, A. Treves (Dep. of Physics, A. Wehrle (Space Science Institute), A. Zook (JPL, B. Sbarufatti (INAF - Oss. Astronomico di Brera), Caltech), D. Gasparrini (ASI ASDC), D. Impiombato (INAF-IASF Palermo), E. Antolini (Dep. of Physics, E. Pian (Scuola Normale Superiore di Pisa), F. D'Ammando (Dep. of Physics, F. Schinzel (Dep. of Physics, G. Polenta (ASI ASDC), G. Tosti (Dep. of Physics, INFN), J. Finke (U. S. Naval Research Laboratory), M. Ajello (SLAC/KIPAC), Mathematics, M. Gurwell (Harvard-Smithsonian Center for Astrophysics), M. Hauser (Landerssternwarte, M. Perri (ASI ASDC), M. Persic (INAF-OA Trieste, P. Romano (INAF-Iasf Palermo), S. Ciprini (ASI ASDC), S. Covino (INAF - Oss. Astronomico di Brera), S. J. Wagner (Landerssternwarte, S. Larsson (Dep. of Physics, Stockholm University), S. Vercellone (INAF-IASF Palermo), Universitat Heidelberg), Univ. of Insubria), Univ. of New Mexico), Univ. of Perugia

arxiv:1302.5439 v2 · 2013-02-21 · 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{LETYXZHTNOF5R67YD7D6STP756}

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	2026-05-18T01:51:34.271818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59278be4f36b8bd8fbf81fc7e94dffef8b3b4aa2cb0ccb2baa1243816c507a11

Aliases

arxiv: 1302.5439 · arxiv_version: 1302.5439v2 · doi: 10.48550/arxiv.1302.5439 · pith_short_12: LETYXZHTNOF5 · pith_short_16: LETYXZHTNOF5R67Y · pith_short_8: LETYXZHT

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/LETYXZHTNOF5R67YD7D6STP756 \
  | 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: 59278be4f36b8bd8fbf81fc7e94dffef8b3b4aa2cb0ccb2baa1243816c507a11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5c7538d57afab4ceb1d8a8c32e5a7523602cd77e169ca7e22bf27794a05e4b4",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-02-21T21:42:20Z",
    "title_canon_sha256": "d5763c10be38ef0a84fc72dd4ecc706238130f91f5128833e7dd6fe86451d523"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.5439",
    "kind": "arxiv",
    "version": 2
  }
}