Pith Number

pith:OB63CHTJ

pith:2019:OB63CHTJDSRT3GE64GULLW5DJF

not attested not anchored not stored refs pending

Towards precise stellar ages: combining isochrone fitting with empirical gyrochronology

Daniel Foreman-Mackey, David W. Hogg, Jason Curtis, Jennifer van Saders, John Brewer, Megan Bedell, Rocio Kiman, Ruth Angus, Stephen R. Kane, Timothy D. Morton

arxiv:1908.07528 v1 · 2019-08-20 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OB63CHTJDSRT3GE64GULLW5DJF}

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.

Cited by

1 paper in Pith

Hints of enhanced magnetic activity after the intermediate rotation period gap as traced by the chromospheric Ca ii infrared triplet

Receipt and verification

First computed	2026-07-05T00:12:05.095704Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

707db11e691ca33d989ee1a8b5dba349768dddba511463f8ecb5f7d065ef22a5

Aliases

arxiv: 1908.07528 · arxiv_version: 1908.07528v1 · doi: 10.48550/arxiv.1908.07528 · pith_short_12: OB63CHTJDSRT · pith_short_16: OB63CHTJDSRT3GE6 · pith_short_8: OB63CHTJ

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/OB63CHTJDSRT3GE64GULLW5DJF \
  | 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: 707db11e691ca33d989ee1a8b5dba349768dddba511463f8ecb5f7d065ef22a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c01854638500215ff10a66f2a224521d2277f74a121b76bab998f92885cfb984",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-08-20T18:00:00Z",
    "title_canon_sha256": "39456f536bc2081480a0a8794ac66d4ec7c960dff20fb74bed36fad17f41caf3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07528",
    "kind": "arxiv",
    "version": 1
  }
}