Pith Number

pith:IWI7NDRB

pith:2020:IWI7NDRBI6FJBLHTAIFVVKTDHR

not attested not anchored not stored refs pending

The closest extremely low-mass white dwarf to the Sun

Adela Kawka, Anna F. Marino, Gary S. Da Costa, Jeffrey D. Simpson, Michael S. Bessell, Simon J. Murphy, Stephane Vennes

arxiv:2004.07556 v1 · 2020-04-16 · 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{IWI7NDRBI6FJBLHTAIFVVKTDHR}

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	2026-07-05T01:00:17.614404Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4591f68e21478a90acf3020b5aaa633c6f80de0db3bf5ed582d33811caa60c88

Aliases

arxiv: 2004.07556 · arxiv_version: 2004.07556v1 · doi: 10.48550/arxiv.2004.07556 · pith_short_12: IWI7NDRBI6FJ · pith_short_16: IWI7NDRBI6FJBLHT · pith_short_8: IWI7NDRB

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/IWI7NDRBI6FJBLHTAIFVVKTDHR \
  | 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: 4591f68e21478a90acf3020b5aaa633c6f80de0db3bf5ed582d33811caa60c88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5f24af25f376c25817fae7bf0e827e132a49efc2442f5053661ee2f47ed9c38",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-04-16T09:48:27Z",
    "title_canon_sha256": "7790c2b1e967ecc372b755f69c198a28f0898689fe70fb1080f467af40f39455"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.07556",
    "kind": "arxiv",
    "version": 1
  }
}