Pith Number

pith:SA7RVA5J

pith:2018:SA7RVA5JZVPABEZJYPOM4VBNTC

not attested not anchored not stored refs pending

From Solar to Stellar Brightness Variations: The Effect of Metallicity

A. I. Shapiro, N. A. Krivova, S. K. Solanki, V. Witzke, W. Schmutz

arxiv:1809.04360 v1 · 2018-09-12 · 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{SA7RVA5JZVPABEZJYPOM4VBNTC}

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	2026-05-18T00:00:18.096311Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

903f1a83a9cd5e009329c3dcce542d989310af74c89ba23da7af79841722a564

Aliases

arxiv: 1809.04360 · arxiv_version: 1809.04360v1 · doi: 10.48550/arxiv.1809.04360 · pith_short_12: SA7RVA5JZVPA · pith_short_16: SA7RVA5JZVPABEZJ · pith_short_8: SA7RVA5J

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/SA7RVA5JZVPABEZJYPOM4VBNTC \
  | 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: 903f1a83a9cd5e009329c3dcce542d989310af74c89ba23da7af79841722a564

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "880f57134e07638b892437b71c74ba1dc04a28fee2c2722ca1b1049b1080da70",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-09-12T11:22:33Z",
    "title_canon_sha256": "e47d4157b4652e75f32bcc6d11c573949710180381f67598a634edd46b073bbe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.04360",
    "kind": "arxiv",
    "version": 1
  }
}