Pith Number

pith:FRGLLNN6

pith:2026:FRGLLNN6OLDFUZJELZBTE3CZ3U

not attested not anchored not stored refs pending

A New Sirius-like System at Only 21 Parsecs: An Elusive White Dwarf Companion to the Nearby K-dwarf HD 38230

Alexander Venner, Cl\'emence Fontanive, Elisabeth C. Matthews, Hai Fu, Justin R. Crepp, Kyle Franson, Logan A. Pearce, Qier An, Timothy D. Brandt

arxiv:2607.28720 v1 · 2026-07-30 · 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{FRGLLNN6OLDFUZJELZBTE3CZ3U}

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	2026-08-03T00:12:24.303968Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c4cb5b5be72c65a65245e43326c59dd0816a9f4aef4911350b1faafb4818d47

Aliases

arxiv: 2607.28720 · arxiv_version: 2607.28720v1 · doi: 10.48550/arxiv.2607.28720 · pith_short_12: FRGLLNN6OLDF · pith_short_16: FRGLLNN6OLDFUZJE · pith_short_8: FRGLLNN6

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/FRGLLNN6OLDFUZJELZBTE3CZ3U \
  | 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: 2c4cb5b5be72c65a65245e43326c59dd0816a9f4aef4911350b1faafb4818d47

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9df166932c6f63169a46b08ee0e967d7ab277af7403109edf27e93d58cb99ffa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-07-30T18:00:01Z",
    "title_canon_sha256": "5bb9a3be163aa8e3a69299d22da5f582eb6abaaa7e278972d03a4ecab20ac1a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.28720",
    "kind": "arxiv",
    "version": 1
  }
}