Pith Number

pith:L4HR5OSL

pith:2016:L4HR5OSLQFEH2JSSPPEDFLQTND

not attested not anchored not stored refs pending

Spitzer Observations Confirm and Rescue the Habitable-Zone Super-Earth K2-18b for Future Characterization

Andrew W. Howard, Bj\"orn Benneke, Charles Beichman, Courtney Dressing, David R. Ciardi, Erik Petigura, Evan Sinukoff, Heather Knutson, Ian J. M. Crossfield, Jessica Krick, Jessie Christiansen, John Livingston, Joshua E. Schlieder, Michael Werner, Rachel L. Akeson, Varoujan Gorjian

arxiv:1610.07249 v1 · 2016-10-24 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L4HR5OSLQFEH2JSSPPEDFLQTND}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:52:38.274440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f0f1eba4b81487d26527bc832ae1368c45565831e2ed66d8f03a4f59b10701b

Aliases

arxiv: 1610.07249 · arxiv_version: 1610.07249v1 · doi: 10.48550/arxiv.1610.07249 · pith_short_12: L4HR5OSLQFEH · pith_short_16: L4HR5OSLQFEH2JSS · pith_short_8: L4HR5OSL

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/L4HR5OSLQFEH2JSSPPEDFLQTND \
  | 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: 5f0f1eba4b81487d26527bc832ae1368c45565831e2ed66d8f03a4f59b10701b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5dd7c392c80121a7f0c6fbb8e72f1be4ba015715b522e50ee594726b052281a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2016-10-24T00:04:33Z",
    "title_canon_sha256": "ca515c354b38535089b167ccd2e00981eea69e49d4ee8ab5dcbe6d6552a772da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.07249",
    "kind": "arxiv",
    "version": 1
  }
}