Pith Number

pith:TZMBR5AW

pith:2019:TZMBR5AWXD66AEU3HA5CDCNSLC

not attested not anchored not stored refs pending

Water Vapor and Clouds on the Habitable-Zone Sub-Neptune Exoplanet K2-18b

Andrew W. Howard, Bj\"orn Benneke, Caroline Piaulet, Caroline V. Morley, Courtney Dressing, Diana Dragomir, Eliza M.-R. Kempton, Heather A. Knutson, Ian J.M. Crossfield, Ian Wong, Jonathan Fraine, Jonathan J. Fortney, Joshua Lothringer, Peter Gao, Peter R. McCullough, Thomas P. Greene

arxiv:1909.04642 v2 · 2019-09-10 · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TZMBR5AWXD66AEU3HA5CDCNSLC}

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	2026-07-05T00:25:50.209484Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e5818f416b8fde0129b383a2189b2588be3609d2fd1eb3d15ac5773b5d84d83

Aliases

arxiv: 1909.04642 · arxiv_version: 1909.04642v2 · doi: 10.48550/arxiv.1909.04642 · pith_short_12: TZMBR5AWXD66 · pith_short_16: TZMBR5AWXD66AEU3 · pith_short_8: TZMBR5AW

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/TZMBR5AWXD66AEU3HA5CDCNSLC \
  | 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: 9e5818f416b8fde0129b383a2189b2588be3609d2fd1eb3d15ac5773b5d84d83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6e194fff36cfdc4afa07ae2359d8c371853f44c3cb98fac7b32122fbf089cdf",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-09-10T17:34:58Z",
    "title_canon_sha256": "980853516011ee9c0c67b22fdf4e5069f528f30a049a9ce89b06b646d9a3570c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.04642",
    "kind": "arxiv",
    "version": 2
  }
}