Pith Number

pith:IX2O2Y6P

pith:2009:IX2O2Y6PZY24GJKRTBVZ5TTNXK

not attested not anchored not stored refs pending

Eclipsing Binary Stars as Tests of Stellar Evolutionary Models and Stellar Ages

Andrej Prsa, Keivan G. Stassun, Leslie Hebb, Mercedes Lopez-Morales

arxiv:0902.2548 v1 · 2009-02-16 · 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{IX2O2Y6PZY24GJKRTBVZ5TTNXK}

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	2026-07-04T15:37:58.320759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45f4ed63cfce35c32551986b9ece6dbaae8d2ed0e458078a942b2c951b465d76

Aliases

arxiv: 0902.2548 · arxiv_version: 0902.2548v1 · doi: 10.48550/arxiv.0902.2548 · pith_short_12: IX2O2Y6PZY24 · pith_short_16: IX2O2Y6PZY24GJKR · pith_short_8: IX2O2Y6P

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/IX2O2Y6PZY24GJKRTBVZ5TTNXK \
  | 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: 45f4ed63cfce35c32551986b9ece6dbaae8d2ed0e458078a942b2c951b465d76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52028403668877fb93b085b3a37c20b301079a60d9ccf62994e0fabc9b7bc4d3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-02-16T00:56:49Z",
    "title_canon_sha256": "95ea2a4f82196f2e3fc57f0af493eb36154400705f60729513ce696c274e4255"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.2548",
    "kind": "arxiv",
    "version": 1
  }
}