Pith Number

pith:NKXS6JN4

pith:2021:NKXS6JN4XQEPRAN2YKQ3CQZRVO

not attested not anchored not stored refs pending

Carbon dust in the evolved born-again planetary nebulae A30 and A78

D.A. Garc\'ia-Hern\'andez, G. Ramos-Larios, H. Todt, J.A. Toal\'a, J.B. Rodr\'iguez-Gonz\'alez, M.A. Guerrero, P. Jim\'enez-Hern\'andez, S. Estrada-Dorado, V.M.A. G\'omez-Gonz\'alez

arxiv:2102.12884 v1 · 2021-02-25 · astro-ph.GA · 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{NKXS6JN4XQEPRAN2YKQ3CQZRVO}

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	2026-07-05T02:23:27.774671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6aaf2f25bcbc08f881bac2a1b14331abb6ee9132ea07ce2de5daabf4ef8fb71a

Aliases

arxiv: 2102.12884 · arxiv_version: 2102.12884v1 · doi: 10.48550/arxiv.2102.12884 · pith_short_12: NKXS6JN4XQEP · pith_short_16: NKXS6JN4XQEPRAN2 · pith_short_8: NKXS6JN4

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/NKXS6JN4XQEPRAN2YKQ3CQZRVO \
  | 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: 6aaf2f25bcbc08f881bac2a1b14331abb6ee9132ea07ce2de5daabf4ef8fb71a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11cc94a31bda4fa16d5428a60daaef1d387e46f2644e0ab446cb802faefce4ef",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-02-25T14:41:56Z",
    "title_canon_sha256": "c6bd5323f5c8893c47d1c2e77b27fd9cf7ee1d0b398428105e20467449f3cb9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.12884",
    "kind": "arxiv",
    "version": 1
  }
}