Pith Number

pith:HKFH74US

pith:2018:HKFH74US3NYUHLXBOJ2CDDVHIY

not attested not anchored not stored refs pending

Discovery of two bright DO-type white dwarfs

Nicole Reindl, Roy H. {\O}stensen, Stephan Geier

arxiv:1807.06584 v1 · 2018-07-17 · 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{HKFH74US3NYUHLXBOJ2CDDVHIY}

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	2026-05-18T00:10:32.639699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a8a7ff292db7143aee17274218ea74639494cca7b03f529c352520aff545634

Aliases

arxiv: 1807.06584 · arxiv_version: 1807.06584v1 · doi: 10.48550/arxiv.1807.06584 · pith_short_12: HKFH74US3NYU · pith_short_16: HKFH74US3NYUHLXB · pith_short_8: HKFH74US

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/HKFH74US3NYUHLXBOJ2CDDVHIY \
  | 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: 3a8a7ff292db7143aee17274218ea74639494cca7b03f529c352520aff545634

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42454612d473c1eb1dda173c9e3127398cb5718704816e49418b0add392df289",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-07-17T17:56:46Z",
    "title_canon_sha256": "6bb6e041bccaf1ca2b746d65f9c86dd08c6fee38199112a676c23ecd8a84e1bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06584",
    "kind": "arxiv",
    "version": 1
  }
}