Pith Number

pith:I7UYL3XL

pith:2009:I7UYL3XLHLTMLVDAPKIN7VGXOX

not attested not anchored not stored refs pending

A Spitzer Search for Substellar Companions to Low Mass White Dwarfs

B. McLeod, Mukremin Kilic, Warren R. Brown

arxiv:0911.0936 v1 · 2009-11-04 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I7UYL3XLHLTMLVDAPKIN7VGXOX}

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	2026-05-18T02:34:11.901288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47e985eeeb3ae6c5d4607a90dfd4d775d29b8420fe08c4e28adf1bf073d4d51f

Aliases

arxiv: 0911.0936 · arxiv_version: 0911.0936v1 · doi: 10.48550/arxiv.0911.0936 · pith_short_12: I7UYL3XLHLTM · pith_short_16: I7UYL3XLHLTMLVDA · pith_short_8: I7UYL3XL

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/I7UYL3XLHLTMLVDAPKIN7VGXOX \
  | 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: 47e985eeeb3ae6c5d4607a90dfd4d775d29b8420fe08c4e28adf1bf073d4d51f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8f43330394d2e1ef9b191e4e825014400e291485973add907be11b38893d6ef",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-11-04T21:39:16Z",
    "title_canon_sha256": "90ab8df3e58f5e40eaac2a8ce1d7a683511af77a99611c74405ecf9052450b53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.0936",
    "kind": "arxiv",
    "version": 1
  }
}