Pith Number

pith:XAVQFYXQ

pith:2012:XAVQFYXQXE3RPSELOZHK4JW4HH

not attested not anchored not stored refs pending

The brightest pure-H ultracool white dwarf

A. C. Day-Jones, D. J. Pinfield, F. Marocco, H. R. A. Jones, J. Gomes, K. P. Forde, L. C. Smith, P.-E. Tremblay, P. W. Lucas, R. Napiwotzki, S. Catalan, Z. H. Zhang

arxiv:1209.1403 v1 · 2012-09-06 · 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{XAVQFYXQXE3RPSELOZHK4JW4HH}

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	2026-05-18T01:54:39.062758Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b82b02e2f0b93717c88b764eae26dc39e27d47ab19a6b206a78faf309e1599a5

Aliases

arxiv: 1209.1403 · arxiv_version: 1209.1403v1 · doi: 10.48550/arxiv.1209.1403 · pith_short_12: XAVQFYXQXE3R · pith_short_16: XAVQFYXQXE3RPSEL · pith_short_8: XAVQFYXQ

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/XAVQFYXQXE3RPSELOZHK4JW4HH \
  | 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: b82b02e2f0b93717c88b764eae26dc39e27d47ab19a6b206a78faf309e1599a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bba914affffb693c1f37bbe6030b465cd8ec7b8321fa222d351c28542f4fbb46",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-09-06T20:27:43Z",
    "title_canon_sha256": "a811642ad62296978b43451f35e943e82796d74f14ae3d9e6da455dff65a6793"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1403",
    "kind": "arxiv",
    "version": 1
  }
}