Pith Number

pith:EA3SXWOP

pith:2004:EA3SXWOP6XOZN6RO2CIJQWGRK3

not attested not anchored not stored refs pending

The Araucaria Project. An improved distance to the Sculptor spiral galaxy NGC 300 from its Cepheid variables

A. Udalski, A. Walker, D. Minniti, F. Bresolin, G. Bono, G. Pietrzynski, I. Soszynski, J. Storm, P. Fouque, R.P. Kudritzki, W. Gieren

arxiv:astro-ph/0405581 v1 · 2004-05-28 · 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{EA3SXWOP6XOZN6RO2CIJQWGRK3}

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	2026-07-04T16:43:51.861224Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20372bd9cff5dd96fa2ed0909858d156c8f540521280cc0b2b0046477582225e

Aliases

arxiv: astro-ph/0405581 · arxiv_version: astro-ph/0405581v1 · doi: 10.48550/arxiv.astro-ph/0405581 · pith_short_12: EA3SXWOP6XOZ · pith_short_16: EA3SXWOP6XOZN6RO · pith_short_8: EA3SXWOP

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/EA3SXWOP6XOZN6RO2CIJQWGRK3 \
  | 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: 20372bd9cff5dd96fa2ed0909858d156c8f540521280cc0b2b0046477582225e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d5835da76bac4be6b3cbaae4ebe689da2fbdaa8a30e9af61b7472b4f7533518",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-05-28T14:55:10Z",
    "title_canon_sha256": "be789ddf7582c47bbee60727cf245d63ffdd8aea2a66bbfa53bf6eadf8ade277"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0405581",
    "kind": "arxiv",
    "version": 1
  }
}