Pith Number

pith:JHELTH66

pith:2009:JHELTH66PI6LXS4C5WLEVGYM34

not attested not anchored not stored refs pending

Binary Planetary Nebulae Nuclei towards the Galactic Bulge. I. Sample Discovery, Period Distribution and Binary Fraction

A. Acker, A.F.J. Moffat, A. Udalski, B. Miszalski, Q.A. Parker

arxiv:0901.4419 v1 · 2009-01-28 · 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{JHELTH66PI6LXS4C5WLEVGYM34}

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	2026-07-04T15:40:06.331811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

49c8b99fde7a3cbbcb82ed964a9b0cdf1935e2ebcd0ee530895449a897176ff3

Aliases

arxiv: 0901.4419 · arxiv_version: 0901.4419v1 · doi: 10.48550/arxiv.0901.4419 · pith_short_12: JHELTH66PI6L · pith_short_16: JHELTH66PI6LXS4C · pith_short_8: JHELTH66

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/JHELTH66PI6LXS4C5WLEVGYM34 \
  | 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: 49c8b99fde7a3cbbcb82ed964a9b0cdf1935e2ebcd0ee530895449a897176ff3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c3ff70b75070b96028511cdffb9d57def8c9df3cd2f6f51563e959bb991b75a7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-01-28T09:09:48Z",
    "title_canon_sha256": "a5fe13aa114308361a7880432ac17001a5d73fe9cebff1f89a0c6834b79ac86a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4419",
    "kind": "arxiv",
    "version": 1
  }
}