Pith Number

pith:3ACMTDSP

pith:2018:3ACMTDSPX2MC7VVKOAQQ5FWJBL

not attested not anchored not stored refs pending

HD 4915: A Maunder Minimum Candidate

Andrew Howard, Howard Isaacson, Jason L. Curtis, Jason T. Wright, Shivani P. Shah

arxiv:1801.09650 v1 · 2018-01-29 · 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{3ACMTDSPX2MC7VVKOAQQ5FWJBL}

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	2026-05-18T00:07:35.197346Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d804c98e4fbe982fd6aa70210e96c90aca4b61a4d4f0dd07f4601dec39ef5644

Aliases

arxiv: 1801.09650 · arxiv_version: 1801.09650v1 · doi: 10.48550/arxiv.1801.09650 · pith_short_12: 3ACMTDSPX2MC · pith_short_16: 3ACMTDSPX2MC7VVK · pith_short_8: 3ACMTDSP

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/3ACMTDSPX2MC7VVKOAQQ5FWJBL \
  | 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: d804c98e4fbe982fd6aa70210e96c90aca4b61a4d4f0dd07f4601dec39ef5644

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1b2bab07afa95f882abc86f5cadb11cb526045d8bd79eedb10a4b593e9c7c42",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-01-29T18:01:30Z",
    "title_canon_sha256": "2e75e82137d21a3c514c70a95f3862f7d9ab7e48adb3c8e1fa97bf3cfc0aecc3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.09650",
    "kind": "arxiv",
    "version": 1
  }
}