Pith Number

pith:7PMD2RVN

pith:2020:7PMD2RVNWY7TMLXMTFIWELJIWJ

not attested not anchored not stored refs pending

Variability in the Massive Open Cluster NGC 1817 from K2: A Rich Population of Asteroseismic Red Clump, Eclipsing Binary, and Main Sequence Pulsating Stars

Andrew J. Buckner, Andrew Vanderburg, Anne Hedlund, Arturo J. Ortiz, Christian Juarez, Daniel I. Rivera, David Richarte, Dennis Stello, Eric L. Sandquist, Frank Grundahl, Karsten Brogaard, Levi Schlapfer, Miguel Aguilar, Ryan DeWitt, Taylor R. Ackerman, Torben Arentoft

arxiv:2001.01839 v1 · 2020-01-07 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7PMD2RVNWY7TMLXMTFIWELJIWJ}

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	2026-07-05T00:41:55.147442Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbd83d46adb63f362eec9951622d28b2422a9648c97be40d5e01c04427310c58

Aliases

arxiv: 2001.01839 · arxiv_version: 2001.01839v1 · doi: 10.48550/arxiv.2001.01839 · pith_short_12: 7PMD2RVNWY7T · pith_short_16: 7PMD2RVNWY7TMLXM · pith_short_8: 7PMD2RVN

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/7PMD2RVNWY7TMLXMTFIWELJIWJ \
  | 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: fbd83d46adb63f362eec9951622d28b2422a9648c97be40d5e01c04427310c58

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b86260b15365fc011dca3d36551b5c26a9d23a4827cd9332f456dbd4cab54d1b",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-01-07T01:39:16Z",
    "title_canon_sha256": "9f59aaabc4b89748e66f88ef0c398d3c2fc9fef0780a0fbff4dcfcd84fd3de59"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.01839",
    "kind": "arxiv",
    "version": 1
  }
}