Pith Number

pith:62TRD5EH

pith:2009:62TRD5EH7CV7US64T4W4DFZLJX

not attested not anchored not stored refs pending

The Origin and Shaping of Planetary Nebulae: Putting the Binary Hypothesis to the Test

Orsola De Marco

arxiv:0902.1137 v1 · 2009-02-06 · 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{62TRD5EH7CV7US64T4W4DFZLJX}

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	2026-05-18T02:14:48.963652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6a711f487f8abfa4bdc9f2dc1972b4df1ba5cc558b46c23e57e624e4619dab6

Aliases

arxiv: 0902.1137 · arxiv_version: 0902.1137v1 · doi: 10.48550/arxiv.0902.1137 · pith_short_12: 62TRD5EH7CV7 · pith_short_16: 62TRD5EH7CV7US64 · pith_short_8: 62TRD5EH

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/62TRD5EH7CV7US64T4W4DFZLJX \
  | 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: f6a711f487f8abfa4bdc9f2dc1972b4df1ba5cc558b46c23e57e624e4619dab6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb0ea0d07f84bb29255fdbe15930d5be59a0b5860b74cffb350fa6354dd1ee9b",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-02-06T17:41:04Z",
    "title_canon_sha256": "33f808317364c9bc04e4a346096f7f58b4743564783501fc4e3fe2deaaac6575"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1137",
    "kind": "arxiv",
    "version": 1
  }
}