Pith Number

pith:WOE74643

pith:2009:WOE74643GXZHGNXZ4SSFJ633OC

not attested not anchored not stored refs pending

Astrometry with the Hubble Space Telescope: Trigonometric Parallaxes of Planetary Nebula Nuclei: NGC 6853, NGC 7293, Abell 31, and DeHt 5

Barbara E. McArthur, Edmund Nelan, G. Fritz Benedict, Howard E. Bond, Hugh C. Harris, Ralf Napiwotzki, Richard J. Patterson, Robin Ciardullo, Thomas E. Harrison

arxiv:0909.4281 v1 · 2009-09-23 · astro-ph.SR · 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{WOE74643GXZHGNXZ4SSFJ633OC}

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	2026-05-18T02:11:38.322783Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b389fe7b9b35f27336f9e4a454fb7b70b7c3ecef42a8cbb5259fc6489a3b4296

Aliases

arxiv: 0909.4281 · arxiv_version: 0909.4281v1 · doi: 10.48550/arxiv.0909.4281 · pith_short_12: WOE74643GXZH · pith_short_16: WOE74643GXZHGNXZ · pith_short_8: WOE74643

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/WOE74643GXZHGNXZ4SSFJ633OC \
  | 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: b389fe7b9b35f27336f9e4a454fb7b70b7c3ecef42a8cbb5259fc6489a3b4296

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26c451ac31c3a64cd22a35dc9c4d2d53696af881bc35158ce39838f31f99d633",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-23T19:38:22Z",
    "title_canon_sha256": "e5f0c79365af474064f5cc8ca1c658adec32c51d3fd32c0b7bd30f63907930e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4281",
    "kind": "arxiv",
    "version": 1
  }
}