Pith Number

pith:OSUT75WJ

pith:2018:OSUT75WJM6CRIOWGJJEIEEHRYN

not attested not anchored not stored refs pending

The K2-138 System: A Near-Resonant Chain of Five Sub-Neptune Planets Discovered by Citizen Scientists

Adam McMaster, Andrew Grey, Andrew Vanderburg, Andrew W. Howard, Brian Cox, Brooke D. Simmons, Campbell Allen, Chris J. Lintott, Courtney D. Dressing, David R. Ciardi, Erik Petigura, Evan Sinukoff, Geert Barentsen, Grant Miller, Ian J. M. Crossfield, Ivan Terentev, Jessie L. Christiansen, John Livingston, Joshua E. Schlieder, Joshua J. E. Kusch, Julia Zemiro, Martin Vales, Martin Veldthuis, Martti H. Kristiansen, Sarah Allen, Thomas Barclay, Timothy Catron, Zach Wolfenbarger

arxiv:1801.03874 v2 · 2018-01-11 · 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{OSUT75WJM6CRIOWGJJEIEEHRYN}

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	2026-05-18T00:25:15.174593Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74a93ff6c96785143ac64a488210f1c3686e89f1e3cd71043c941b741decbb70

Aliases

arxiv: 1801.03874 · arxiv_version: 1801.03874v2 · doi: 10.48550/arxiv.1801.03874 · pith_short_12: OSUT75WJM6CR · pith_short_16: OSUT75WJM6CRIOWG · pith_short_8: OSUT75WJ

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/OSUT75WJM6CRIOWGJJEIEEHRYN \
  | 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: 74a93ff6c96785143ac64a488210f1c3686e89f1e3cd71043c941b741decbb70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f563c476ed01b7d3b71ef779aa2885a03f7b75fc2584d4299524bebd63dae87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-01-11T17:05:43Z",
    "title_canon_sha256": "8948fae594d70cd0e7517c46a0e3a368084d0dbe55a02aed06479a4d5925c562"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.03874",
    "kind": "arxiv",
    "version": 2
  }
}