Pith Number

pith:U5VQCFW5

pith:2019:U5VQCFW5FPYIZTOVIV5YWKZ57O

not attested not anchored not stored refs pending

No Clear, Direct Evidence for Multiple Protoplanets Orbiting LkCa 15: LkCa 15 bcd are Likely Inner Disk Signals

Carol Grady, Christian Marois, Claudio Caceres, Dary Rodriguez-Ruiz, Derek Hand, Frantz Martinache, Gijs Mulders, Jeffrey Chilcote, John Wisniewski, Julien Lozi, Jungmi Kwon, Kellen Lawson, Klaus Hodapp, Lucas Cieza, Masahiko Hayashi, Masayuki Kuzuhara, Michael McElwain, Misato Fukagawa, Motohide Tamura, Nemanja Jovanovic, N. Jeremy Kasdin, Nour Skaf, Olivier Guyon, Ruben Asensio-Torres, Ruobing Dong, Taichi Uyama, Thayne Currie, Thomas Henning, Timothy Brandt, Tomoyuki Kudo, Tyler Groff, Wladimir Lyra

arxiv:1905.04322 v1 · 2019-05-10 · astro-ph.EP · astro-ph.IM · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U5VQCFW5FPYIZTOVIV5YWKZ57O}

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	2026-05-17T23:44:53.933767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a76b0116dd2bf08ccdd5457b8b2b3dfbac7ea894df23bafca2b62590dbcbbdf3

Aliases

arxiv: 1905.04322 · arxiv_version: 1905.04322v1 · doi: 10.48550/arxiv.1905.04322 · pith_short_12: U5VQCFW5FPYI · pith_short_16: U5VQCFW5FPYIZTOV · pith_short_8: U5VQCFW5

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/U5VQCFW5FPYIZTOVIV5YWKZ57O \
  | 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: a76b0116dd2bf08ccdd5457b8b2b3dfbac7ea894df23bafca2b62590dbcbbdf3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8eb0897c3f2e5861b500db364a529fa1c2407a382205787a4842215f01c7c12",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-05-10T18:02:17Z",
    "title_canon_sha256": "2a14cfbd0e9a59f681c33df5cb981b984847b5f3a1a7a61e763e174ccda53bd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.04322",
    "kind": "arxiv",
    "version": 1
  }
}