Pith Number

pith:LEODGQ5N

pith:2009:LEODGQ5NMYMP4BDSIY55ONCAYR

not attested not anchored not stored refs pending

Optical and X-ray Observations of M31N 2007-12b: An Extragalactic Recurrent Nova with a Detected Progenitor?

(2) Department of Astronomy, (3) Department of Physics, (4) Institute of Astronomy, Astronomy, A. W. Shafter (2), Bangalore, G. C. Anupama (5), India), K. L. Page (3), Latvia (5) Indian Institute of Astrophysics, Liverpool John Moores University, M. F. Bode (1), M. J. Darnley (1), O. Smirnova (4), San Diego State University, T. Hilton (1) ((1) Astrophysics Research Institute, UK, University of Latvia, University of Leicester, USA

arxiv:0902.0301 v3 · 2009-02-02 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LEODGQ5NMYMP4BDSIY55ONCAYR}

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	2026-05-18T02:14:54.643511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

591c3343ad6618fe0472463bd73440c46899ece495dcc281ba8ab4edf1beb107

Aliases

arxiv: 0902.0301 · arxiv_version: 0902.0301v3 · doi: 10.48550/arxiv.0902.0301 · pith_short_12: LEODGQ5NMYMP · pith_short_16: LEODGQ5NMYMP4BDS · pith_short_8: LEODGQ5N

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/LEODGQ5NMYMP4BDSIY55ONCAYR \
  | 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: 591c3343ad6618fe0472463bd73440c46899ece495dcc281ba8ab4edf1beb107

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edee6c8555526945ee2ca79c2a0cb8ce9407871093328dc3e9964b5cd8f978ef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-02-02T15:28:14Z",
    "title_canon_sha256": "07ee54548afbbc269012d4d5d85948bf985da7b1b81b5e2a3f5dbe01c6721676"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.0301",
    "kind": "arxiv",
    "version": 3
  }
}