Pith Number

pith:DGVBE2EV

pith:2014:DGVBE2EVKJQGFYFIZQTBEOE3WF

not attested not anchored not stored refs pending

Discovery of Dramatic Optical Variability in SDSS J1100+4421: A Peculiar Radio-Loud Narrow-Line Seyfert 1 Galaxy?

Ahmad Essam, Ali Takey, Carlos Contreras, Chinami Noma, Daisuke Kuroda, Devendra Sahu, Elena Pian, Emiko Matsumoto, Emma S. Walker, Eric Y. Hsiao, Francesco Taddia, Fumiaki Nakata, Gamal Ali, Gamal Hamed, Hiroshi Akitaya, Hiroyuki Maehara, Hiroyuki Mito, Ikuru Iwata, Kana Morokuma-Matsui, Katsutoshi Takaki, Ken'ichi Tarusawa, Ken Ohsuga, Kensho Mori, Koji S. Kawabata, Lukasz Stawarz, Mamoru Doi, Mark M. Phillips, Masaomi Tanaka, Maximilian D. Stritzinger, Michael W. Richmond, Naoto Kobayashi, Nidia Morrell, Nobuharu Ukita, Nobuyuki Kawai, Norio Okada, Nozomu Tominaga, Paolo A. Mazzali, Poshak Gandhi, Ryosuke Itoh, Satoshi Miyazaki, Shigeyuki Sako, Takahiro Ui, Takao Soyano, Takashi Miyata, Takeo Minezaki, Taketoshi Yoshii, Takumi Shibata, Tohru Nagao, Tomoki Morokuma, Tsutomu Aoki, Yasuyuki T. Tanaka, Yoshihiko Saito, Yoshikazu Nakada, Yuji Urata, Yuki Kikuchi, Yuki Moritani, Yuki Sarugaku, Yutaro Tachibana

arxiv:1409.1309 v1 · 2014-09-04 · 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{DGVBE2EVKJQGFYFIZQTBEOE3WF}

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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	2026-05-18T01:42:08.238327Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19aa126895526062e0a8cc2612389bb16d17489d829f756defd24ae22c88df0d

Aliases

arxiv: 1409.1309 · arxiv_version: 1409.1309v1 · doi: 10.48550/arxiv.1409.1309 · pith_short_12: DGVBE2EVKJQG · pith_short_16: DGVBE2EVKJQGFYFI · pith_short_8: DGVBE2EV

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/DGVBE2EVKJQGFYFIZQTBEOE3WF \
  | 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: 19aa126895526062e0a8cc2612389bb16d17489d829f756defd24ae22c88df0d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be77cc1a80651941aa671d3bcd87e51b06048e39f4ad49be210fee184e2160df",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-09-04T03:07:40Z",
    "title_canon_sha256": "068f0eba464fc6d4727f92205dd1785e0f4f06abe61ce7aee6657e4c318c679e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.1309",
    "kind": "arxiv",
    "version": 1
  }
}