Pith Number

pith:MSZJZXVX

pith:2013:MSZJZXVXUK7JDRMBUYRJFTNAMA

not attested not anchored not stored refs pending

Planets spinning up their host stars: a twist on the age-activity relationship

K. Poppenhaeger, S. J. Wolk

arxiv:1309.6356 v1 · 2013-09-24 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MSZJZXVXUK7JDRMBUYRJFTNAMA}

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	2026-05-18T01:47:27.092178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

64b29cdeb7a2be91c581a62292cda060012be31f9943d14cbd081eb4ee84318d

Aliases

arxiv: 1309.6356 · arxiv_version: 1309.6356v1 · doi: 10.48550/arxiv.1309.6356 · pith_short_12: MSZJZXVXUK7J · pith_short_16: MSZJZXVXUK7JDRMB · pith_short_8: MSZJZXVX

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/MSZJZXVXUK7JDRMBUYRJFTNAMA \
  | 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: 64b29cdeb7a2be91c581a62292cda060012be31f9943d14cbd081eb4ee84318d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3cbf44ab15d4e7d39d3d8b56374467b0ccb65f7b7d8ddad4843e69fe1da3fb1",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-09-24T21:42:49Z",
    "title_canon_sha256": "223f4c5fcfee55d225fcaabd8ffe71c7ac94702ccb45ba87b2d255e81e4fc5a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.6356",
    "kind": "arxiv",
    "version": 1
  }
}