Pith Number

pith:B44FBJCB

pith:2011:B44FBJCBMMXU7IQGZQLIEQIZ4P

not attested not anchored not stored refs pending

Shape, Structure, and Morphology in Planetary Nebulae

Richard A. Shaw

arxiv:1111.3269 v2 · 2011-11-14 · 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{B44FBJCBMMXU7IQGZQLIEQIZ4P}

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	2026-05-18T01:59:33.690376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f3850a441632f4fa206cc16824119e3e40c39a885b279f227864781f9c66028

Aliases

arxiv: 1111.3269 · arxiv_version: 1111.3269v2 · doi: 10.48550/arxiv.1111.3269 · pith_short_12: B44FBJCBMMXU · pith_short_16: B44FBJCBMMXU7IQG · pith_short_8: B44FBJCB

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/B44FBJCBMMXU7IQGZQLIEQIZ4P \
  | 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: 0f3850a441632f4fa206cc16824119e3e40c39a885b279f227864781f9c66028

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "351a71ae05a7e435a6db3c7f053373a25c17a4b1b6efca4cba78b881fd6c43b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-11-14T16:22:28Z",
    "title_canon_sha256": "1632b4caa2d38d30556b68d9996c5d392ded4cd6e84447e122749a8adab75ab2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3269",
    "kind": "arxiv",
    "version": 2
  }
}