Pith Number

pith:O4R47CVP

pith:2018:O4R47CVPGFIOKUYHC4QFAN7ABR

not attested not anchored not stored refs pending

Confirmation of the radial velocity super-Earth K2-18c with HARPS and CARMENES

A. W\"unsche, C. Lovis, F. Bouchy, F. Murgas, F. Pepe, J.M. Almenara, K. Menou, M. Mayor, N. Astudillo-Defru, N.C. Santos, R. Cloutier, R. Doyon, S. Udry, T. Forveille, X. Bonfils, X. Delfosse

arxiv:1810.04731 v1 · 2018-10-10 · 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{O4R47CVPGFIOKUYHC4QFAN7ABR}

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	2026-05-17T23:56:45.326883Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7723cf8aaf3150e5530717205037e00c66db57e8f2802fc29bfb4f3889f98d60

Aliases

arxiv: 1810.04731 · arxiv_version: 1810.04731v1 · doi: 10.48550/arxiv.1810.04731 · pith_short_12: O4R47CVPGFIO · pith_short_16: O4R47CVPGFIOKUYH · pith_short_8: O4R47CVP

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/O4R47CVPGFIOKUYHC4QFAN7ABR \
  | 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: 7723cf8aaf3150e5530717205037e00c66db57e8f2802fc29bfb4f3889f98d60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38b6c3d693e7ae6b2ef7dfdfe42d29067d5e97ecbb412bf4e41752f4f6d985b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-10-10T20:00:01Z",
    "title_canon_sha256": "a64485c532f462a69d6ca73ef290689a66cdc2e9503a7c13df3853d0a6ec81b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.04731",
    "kind": "arxiv",
    "version": 1
  }
}