Pith Number

pith:NKD6WJ7L

pith:2012:NKD6WJ7LS3KYFUKQQTRHSW2Y3C

not attested not anchored not stored refs pending

[Fe III] emission lines in the planetary nebula NGC 2392

C.-H. Hsia, N. Koning, S. Kwok, W. Chau, X. Fang, X.-W. Liu, Y. Zhang

arxiv:1205.3470 v1 · 2012-05-15 · 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{NKD6WJ7LS3KYFUKQQTRHSW2Y3C}

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	2026-05-18T01:57:31.827801Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a87eb27eb96d582d15084e2795b58d8acd4d0a939b6bc1f3808eadd100a8ed2

Aliases

arxiv: 1205.3470 · arxiv_version: 1205.3470v1 · doi: 10.48550/arxiv.1205.3470 · pith_short_12: NKD6WJ7LS3KY · pith_short_16: NKD6WJ7LS3KYFUKQ · pith_short_8: NKD6WJ7L

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/NKD6WJ7LS3KYFUKQQTRHSW2Y3C \
  | 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: 6a87eb27eb96d582d15084e2795b58d8acd4d0a939b6bc1f3808eadd100a8ed2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f657944e234d4ef4ca093afac73ea1c10aa9c0f4463ef9ab137472b58d920421",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-05-15T18:27:58Z",
    "title_canon_sha256": "bc49bccb997a4f5a53946f44aedf522e80c6a2e29bb606efcdf54306855dce02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.3470",
    "kind": "arxiv",
    "version": 1
  }
}