Pith Number

pith:BSD3WHCU

pith:2011:BSD3WHCUSLLFUH3M753H5QNVAH

not attested not anchored not stored refs pending

Reduce, Reuse, Recycle: Planetary Nebulae as Green Galactic Citizens

K.B. Kwitter, R.B.C. Henry

arxiv:1109.2502 v1 · 2011-09-12 · 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{BSD3WHCUSLLFUH3M753H5QNVAH}

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	2026-05-18T02:00:34.347929Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c87bb1c5492d65a1f6cff767ec1b501e40c2605368b6dc0bce3e7a993f6941f

Aliases

arxiv: 1109.2502 · arxiv_version: 1109.2502v1 · doi: 10.48550/arxiv.1109.2502 · pith_short_12: BSD3WHCUSLLF · pith_short_16: BSD3WHCUSLLFUH3M · pith_short_8: BSD3WHCU

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/BSD3WHCUSLLFUH3M753H5QNVAH \
  | 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: 0c87bb1c5492d65a1f6cff767ec1b501e40c2605368b6dc0bce3e7a993f6941f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "50f1a82258fc4b47c21bdb96f9b30ebc771c5389db254a2d230c4e444ac1d17d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-09-12T15:25:01Z",
    "title_canon_sha256": "25ab9ba5d9ad89cb3db78db104ac9907b9d828a2a4c3f458ba1643a984670a53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2502",
    "kind": "arxiv",
    "version": 1
  }
}