Pith Number

pith:2W4HB5PI

pith:2025:2W4HB5PI5A6DOVXK225UC3BVAN

not attested not anchored not stored refs pending

Can Moons Exist around the Habitable-zone Planet K2-18b?

Billy Quarles, Manfred Cuntz, Nevin N. Weinberg, Shaan D. Patel

arxiv:2507.11594 v1 · 2025-07-15 · 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{2W4HB5PI5A6DOVXK225UC3BVAN}

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	2026-07-05T11:37:47.119161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5b870f5e8e83c3756ead6bb416c350372c2f2c994cf0125c17be9485d8859e9

Aliases

arxiv: 2507.11594 · arxiv_version: 2507.11594v1 · doi: 10.48550/arxiv.2507.11594 · pith_short_12: 2W4HB5PI5A6D · pith_short_16: 2W4HB5PI5A6DOVXK · pith_short_8: 2W4HB5PI

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/2W4HB5PI5A6DOVXK225UC3BVAN \
  | 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: d5b870f5e8e83c3756ead6bb416c350372c2f2c994cf0125c17be9485d8859e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67be21295edf524336d0558ac9b6e891be3b3a10d784708177f05b057a118c11",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2025-07-15T16:54:53Z",
    "title_canon_sha256": "8512e10a53d829f099c3b1e7c66a9cabfca02e625185309191babb224cf757a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.11594",
    "kind": "arxiv",
    "version": 1
  }
}