Pith Number

pith:7CGENG2Y

pith:2009:7CGENG2YQHRYCVPCQKN46NKYAQ

not attested not anchored not stored refs pending

Interferometric Observations of the Hierarchical Triple System Algol

C. Farrington, H. A. McAlister, J. Sturmann, L. Mosoni, L. Sturmann, L. Szabados, N. H. Turner, P. Abraham, P. Klagyivik, Sz. Csizmadia, T. A. ten Brummelaar, T. Borkovits, Zs. Paragi

arxiv:0909.5049 v1 · 2009-09-28 · astro-ph.SR · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7CGENG2YQHRYCVPCQKN46NKYAQ}

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	2026-05-18T02:34:27.445332Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f88c469b5881e38155e2829bcf3558042daf0c9d150ef257cfa3ae4486776ff9

Aliases

arxiv: 0909.5049 · arxiv_version: 0909.5049v1 · doi: 10.48550/arxiv.0909.5049 · pith_short_12: 7CGENG2YQHRY · pith_short_16: 7CGENG2YQHRYCVPC · pith_short_8: 7CGENG2Y

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/7CGENG2YQHRYCVPCQKN46NKYAQ \
  | 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: f88c469b5881e38155e2829bcf3558042daf0c9d150ef257cfa3ae4486776ff9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "147b1e5fd060d493219a620e44aeddf1cdc852874f49603d7647696bf48e3db6",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-28T09:45:09Z",
    "title_canon_sha256": "64dc1ace9818914fb4090577a0caa49ba34f57d330c450ddd9f75fe17b81a368"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.5049",
    "kind": "arxiv",
    "version": 1
  }
}