Pith Number

pith:4ZPVOHGU

pith:2009:4ZPVOHGUKJ6SY7TIFFUKTUTDKK

not attested not anchored not stored refs pending

Planetary nebulae in the direction of the Galactic bulge: On nebulae with emission-line central stars

C. Chiappini, F. Cuisinier, G. Stasinska, S. K. Gorny

arxiv:0905.1826 v1 · 2009-05-12 · 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{4ZPVOHGUKJ6SY7TIFFUKTUTDKK}

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	2026-05-18T02:13:45.526048Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e65f571cd4527d2c7e682968a9d26352ada7dfdd25ebd3e3f7311b939a6f417a

Aliases

arxiv: 0905.1826 · arxiv_version: 0905.1826v1 · doi: 10.48550/arxiv.0905.1826 · pith_short_12: 4ZPVOHGUKJ6S · pith_short_16: 4ZPVOHGUKJ6SY7TI · pith_short_8: 4ZPVOHGU

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/4ZPVOHGUKJ6SY7TIFFUKTUTDKK \
  | 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: e65f571cd4527d2c7e682968a9d26352ada7dfdd25ebd3e3f7311b939a6f417a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86f27bed99f009a06995d880cde1ffead0642e3b8ba191d5b8e28ea5529762ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-05-12T12:14:58Z",
    "title_canon_sha256": "8b1319880c673ffcb62f15020776d019695bb00f56cda8ff4b38602496f56b75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1826",
    "kind": "arxiv",
    "version": 1
  }
}