Pith Number

pith:4C44IXY4

pith:2019:4C44IXY4JMHZAA5G4HIADGH7YR

not attested not anchored not stored refs pending

K2-291 b: A rocky super-Earth in a 2.2 day orbit

Adrien Coffinet, Aldo S. Bonomo, Alessandro Sozzetti, Andrew Collier Cameron, Andrew Vanderburg, Andrew W. Howard, Annelies Mortier, Benjamin J. Fulton, Bronwen J.Hardee, Chantanelle Nava, Christophe Lovis, Chris Watson, Courtney D. Dressing, Damien Segransan, David Charbonneau, David Phillips, David R. Ciardi, David W. Latham, Dimitar Sasselov, Emilio Molinari, Ennio Poretti, Erica J. Gonzales, Erik A. Petigura, Evan Sinukoff, Francesco Pepe, Francois Bouchy, Giampaolo Piotto, Giusi Micela, Howard Isaacson, Ian J.M. Crossfield, Joshua E. Schlieder, Ken Rice, Lars A. Buchhave, Lauren Weiss, Lea A. Hirsch, Luca Malavolta, Makennah Bristow, Mario Damasso, Mercedes Lopez-Morales, Michel Mayor, Molly R. Kosiarek, Pedro Figueira, Raphaelle D. Haywood, Sarah Blunt, Stephane Udry, Xavier Dumusque

arxiv:1901.04558 v2 · 2019-01-14 · 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{4C44IXY4JMHZAA5G4HIADGH7YR}

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	2026-05-17T23:53:41.205930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0b9c45f1c4b0f9003a6e1d00198ffc45d9f6f32203577bfa2e937ffe4ad7599

Aliases

arxiv: 1901.04558 · arxiv_version: 1901.04558v2 · doi: 10.48550/arxiv.1901.04558 · pith_short_12: 4C44IXY4JMHZ · pith_short_16: 4C44IXY4JMHZAA5G · pith_short_8: 4C44IXY4

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/4C44IXY4JMHZAA5G4HIADGH7YR \
  | 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: e0b9c45f1c4b0f9003a6e1d00198ffc45d9f6f32203577bfa2e937ffe4ad7599

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9e0f6ca8c19a79a9c828aede7faaf3faec661731056f49a363ff3e4fc44e19d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-01-14T20:49:04Z",
    "title_canon_sha256": "9bced433d18485ccd73a2e96f93098c758fc3f8470837b296ece81759266a416"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04558",
    "kind": "arxiv",
    "version": 2
  }
}