Pith Number

pith:4PXFI2NT

pith:2008:4PXFI2NTODX26YP3Q3NOTIGHJ4

not attested not anchored not stored refs pending

How peculiar is the "peculiar variable" DZ Crucis (Nova Cru 2003)?

A. Evans, B. Smalley, J. Th. van Loon, M. T. Rushton, S. P. S. Eyres

arxiv:0801.4934 v1 · 2008-01-31 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4PXFI2NTODX26YP3Q3NOTIGHJ4}

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	2026-07-04T17:09:05.848817Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3ee5469b370efaf61fb86dae9a0c74f3de2104afbd6e39f49ddbaaa45aca57f

Aliases

arxiv: 0801.4934 · arxiv_version: 0801.4934v1 · doi: 10.48550/arxiv.0801.4934 · pith_short_12: 4PXFI2NTODX2 · pith_short_16: 4PXFI2NTODX26YP3 · pith_short_8: 4PXFI2NT

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/4PXFI2NTODX26YP3Q3NOTIGHJ4 \
  | 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: e3ee5469b370efaf61fb86dae9a0c74f3de2104afbd6e39f49ddbaaa45aca57f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2935cb7b410d3751fd6a30c32c91a8aad1b8010018088e9f2d708d23e4875e3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-01-31T17:51:22Z",
    "title_canon_sha256": "4d850ce61feda6dcec37d2bd78111c467ffe2dd33e1d3c90d617449b4cc26699"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.4934",
    "kind": "arxiv",
    "version": 1
  }
}