Pith Number

pith:MQUDUH2G

pith:2014:MQUDUH2GMMNKJWRKLI2N2PD2GF

not attested not anchored not stored refs pending

The born-again planetary nebula A78: an X-ray twin of A30

D. Sch\"onberner, G. Ramos-Larios, H. Todt, J.A. Toal\'a, L.M. Oskinova, M.A. Guerrero, R.A. Gruendl, R.A. Marquez-Lugo, W.-R. Hamann, X. Fang, Y.-H. Chu

arxiv:1411.3837 v1 · 2014-11-14 · 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{MQUDUH2GMMNKJWRKLI2N2PD2GF}

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	2026-05-18T01:41:30.510096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64283a1f46631aa4da2a5a34dd3c7a317fd6e38e7f0effef143236636d0f144e

Aliases

arxiv: 1411.3837 · arxiv_version: 1411.3837v1 · doi: 10.48550/arxiv.1411.3837 · pith_short_12: MQUDUH2GMMNK · pith_short_16: MQUDUH2GMMNKJWRK · pith_short_8: MQUDUH2G

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/MQUDUH2GMMNKJWRKLI2N2PD2GF \
  | 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: 64283a1f46631aa4da2a5a34dd3c7a317fd6e38e7f0effef143236636d0f144e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e6b173e06062323f993ebac6dcfd26d98efde7a80dce64cbbb9b06b92e0744d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-11-14T09:33:04Z",
    "title_canon_sha256": "db52c4aa7d1ddb2c9ee6416cfccb7c73dce2b233672b8296375298a0ecedc83d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.3837",
    "kind": "arxiv",
    "version": 1
  }
}