Pith Number

pith:QHC2HTVF

pith:2018:QHC2HTVFJBYW2G53F2HSCYEJZZ

not attested not anchored not stored refs pending

The Exoplanet Population Observation Simulator. I - The Inner Edges of Planetary Systems

Daniel Apai, Fred J. Ciesla, Gijs D. Mulders, Ilaria Pascucci

arxiv:1805.08211 v1 · 2018-05-21 · astro-ph.EP · 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{QHC2HTVFJBYW2G53F2HSCYEJZZ}

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	2026-05-18T00:11:04.826334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81c5a3cea548716d1bbb2e8f216089ce52665d039d1abbf58cbfa26f77bbbe54

Aliases

arxiv: 1805.08211 · arxiv_version: 1805.08211v1 · doi: 10.48550/arxiv.1805.08211 · pith_short_12: QHC2HTVFJBYW · pith_short_16: QHC2HTVFJBYW2G53 · pith_short_8: QHC2HTVF

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/QHC2HTVFJBYW2G53F2HSCYEJZZ \
  | 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: 81c5a3cea548716d1bbb2e8f216089ce52665d039d1abbf58cbfa26f77bbbe54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "333a79fbfcb6e3312b06ddc6193129540a4f141e2a23627634011e834124bd8b",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-05-21T18:00:00Z",
    "title_canon_sha256": "f45e686597788eacae237554f636cf4a803ca5b9c90cfbac425c925424fedbd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.08211",
    "kind": "arxiv",
    "version": 1
  }
}