Pith Number

pith:O2ZPOUTC

pith:2012:O2ZPOUTC2D2MMMX4QT6OM6Q2QG

not attested not anchored not stored refs pending

Newly discovered halos and outer features around southern planetary nebulae

2, 2), (2) Macquarie University Research Centre in Astronomy, 3), 3) ((1) Department of Physics, (3) Australian Astronomical Observatory), Astronomy, Astrophotonics, Astrophysics, D. J. Frew (1, I. S. Bojicic (1, Macquarie University, Q. A. Parker (1

arxiv:1203.1391 v1 · 2012-03-07 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O2ZPOUTC2D2MMMX4QT6OM6Q2QG}

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	2026-05-18T01:58:13.886451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

76b2f75262d0f4c632fc84fce67a1a81b8e32de5451818c5911e146c54c4fad3

Aliases

arxiv: 1203.1391 · arxiv_version: 1203.1391v1 · doi: 10.48550/arxiv.1203.1391 · pith_short_12: O2ZPOUTC2D2M · pith_short_16: O2ZPOUTC2D2MMMX4 · pith_short_8: O2ZPOUTC

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/O2ZPOUTC2D2MMMX4QT6OM6Q2QG \
  | 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: 76b2f75262d0f4c632fc84fce67a1a81b8e32de5451818c5911e146c54c4fad3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "298fd5c5c8d486917bae96089bddaa6866a545d0a89954b44a5ee2f4a25d58c1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-03-07T06:50:51Z",
    "title_canon_sha256": "1e7889d8e559bc71f54d001daa1ae837a9d9f9573016c28242a61c81af296f7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.1391",
    "kind": "arxiv",
    "version": 1
  }
}