Pith Number

pith:W7YZL3R3

pith:2013:W7YZL3R3EPCQZ5UIQXLOCC4TFN

not attested not anchored not stored refs pending

The Araucaria Project : the Baade-Wesselink projection factor of pulsating stars

E. Poretti, G. Pietrzynski, J. Storm, N. Nardetto, W. Gieren

arxiv:1309.4886 v1 · 2013-09-19 · 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{W7YZL3R3EPCQZ5UIQXLOCC4TFN}

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	2026-05-18T01:47:35.614387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7f195ee3b23c50cf68885d6e10b932b544da4d44a6f380683692f799480af3b

Aliases

arxiv: 1309.4886 · arxiv_version: 1309.4886v1 · doi: 10.48550/arxiv.1309.4886 · pith_short_12: W7YZL3R3EPCQ · pith_short_16: W7YZL3R3EPCQZ5UI · pith_short_8: W7YZL3R3

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/W7YZL3R3EPCQZ5UIQXLOCC4TFN \
  | 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: b7f195ee3b23c50cf68885d6e10b932b544da4d44a6f380683692f799480af3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "573232cc0cf3202ffb008a0fadf3f97979f1ad4ece655e947b6dae7d23106967",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-09-19T07:46:06Z",
    "title_canon_sha256": "d4867b80f9e3fa5fb88e5de00ac0cd588ff801c9beebfdb2a6552651d2d74334"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4886",
    "kind": "arxiv",
    "version": 1
  }
}