Pith Number

pith:ZPAKFLAV

pith:2009:ZPAKFLAVZQ4SJSJIOMAE3Z6CNB

not attested not anchored not stored refs pending

A substellar component orbiting the F-star 30 Ari B

A.P. Hatzes, D. Gandolfi, E.W. Guenther, F. Cusano, M. Esposito, M. Hartmann

arxiv:0912.4619 v1 · 2009-12-23 · astro-ph.EP · 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{ZPAKFLAVZQ4SJSJIOMAE3Z6CNB}

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	2026-05-18T04:37:33.296770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbc0a2ac15cc3924c92873004de7c2686a4b3e5429a95bc1e69655289dc27aba

Aliases

arxiv: 0912.4619 · arxiv_version: 0912.4619v1 · doi: 10.48550/arxiv.0912.4619 · pith_short_12: ZPAKFLAVZQ4S · pith_short_16: ZPAKFLAVZQ4SJSJI · pith_short_8: ZPAKFLAV

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/ZPAKFLAVZQ4SJSJIOMAE3Z6CNB \
  | 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: cbc0a2ac15cc3924c92873004de7c2686a4b3e5429a95bc1e69655289dc27aba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a661adeb5502bd1817f2be93c8bf4823098ae92db38b58cf80ccf1255e9de571",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-12-23T11:40:20Z",
    "title_canon_sha256": "e72b7b55662fda0093e27be32464f6c609a74d7ce804c9335c3c5f6aa53c0c37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.4619",
    "kind": "arxiv",
    "version": 1
  }
}