Pith Number

pith:UVXLPQTI

pith:2009:UVXLPQTIFA7R3FXHUHS2G7LE7M

not attested not anchored not stored refs pending

The Cepheid Impostor HD 18391 and its Anonymous Parent Cluster

Daniel J. Majaess, David G. Turner, David J. Lane, Kathleen E. Moncrieff, V. V. Kovtyukh

arxiv:0907.2904 v1 · 2009-07-16 · 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{UVXLPQTIFA7R3FXHUHS2G7LE7M}

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	2026-05-18T02:12:56.508687Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a56eb7c268283f1d96e7a1e5a37d64fb17b417ba6aeb88adf1437684a2d97e34

Aliases

arxiv: 0907.2904 · arxiv_version: 0907.2904v1 · doi: 10.48550/arxiv.0907.2904 · pith_short_12: UVXLPQTIFA7R · pith_short_16: UVXLPQTIFA7R3FXH · pith_short_8: UVXLPQTI

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/UVXLPQTIFA7R3FXHUHS2G7LE7M \
  | 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: a56eb7c268283f1d96e7a1e5a37d64fb17b417ba6aeb88adf1437684a2d97e34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bced3db46ba20c69c776a8324bd8d0634cf3bfc8cc362081a8a712b1c18c84a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-16T18:55:11Z",
    "title_canon_sha256": "5a0d946e5a94d323bafd6929dcc6c719db9d44635467c3226fe48cd1bce45fd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2904",
    "kind": "arxiv",
    "version": 1
  }
}