Pith Number

pith:ZTAHKSBF

pith:2020:ZTAHKSBFULWFYPM7KBKU5LQFSR

not attested not anchored not stored refs pending

Kepler-1661 b: A Neptune-sized Kepler Transiting Circumbinary Planet around a Grazing Eclipsing Binary

Billy Quarles, Donald R Short, Guillermo Torres, Gur Windmiller, Jerome A Orosz, Michael Endl, Mitchell Yenawine, Quentin J Socia, William D Cochran, William F Welsh

arxiv:2001.02840 v1 · 2020-01-09 · astro-ph.SR · 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{ZTAHKSBFULWFYPM7KBKU5LQFSR}

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	2026-07-05T00:41:55.398020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ccc0754825a2ec5c3d9f50554eae05944fe2e0b8f93bd6b4328566514ea5b2f7

Aliases

arxiv: 2001.02840 · arxiv_version: 2001.02840v1 · doi: 10.48550/arxiv.2001.02840 · pith_short_12: ZTAHKSBFULWF · pith_short_16: ZTAHKSBFULWFYPM7 · pith_short_8: ZTAHKSBF

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/ZTAHKSBFULWFYPM7KBKU5LQFSR \
  | 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: ccc0754825a2ec5c3d9f50554eae05944fe2e0b8f93bd6b4328566514ea5b2f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "efa9b6abc598a1c28201be3446523fe4526c441120f5aa1a45b88c7e8dcea567",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-01-09T05:02:10Z",
    "title_canon_sha256": "578c6a5b9bb472416a9fda1ebfe6bb2a919146750e9c43653b0dbaea926cd0e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.02840",
    "kind": "arxiv",
    "version": 1
  }
}