Pith Number

pith:2A5XD4E3

pith:2018:2A5XD4E3ISOU4YM7QOSFRIH2T4

not attested not anchored not stored refs pending

Hot subdwarfs formed from the merger of two He white dwarfs

Josiah Schwab

arxiv:1803.00576 v1 · 2018-03-01 · astro-ph.SR · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2A5XD4E3ISOU4YM7QOSFRIH2T4}

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	2026-05-18T00:20:34.685564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d03b71f09b449d4e619f83a458a0fa9f2fcb0830c1088492b3808cc20488a3a0

Aliases

arxiv: 1803.00576 · arxiv_version: 1803.00576v1 · doi: 10.48550/arxiv.1803.00576 · pith_short_12: 2A5XD4E3ISOU · pith_short_16: 2A5XD4E3ISOU4YM7 · pith_short_8: 2A5XD4E3

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/2A5XD4E3ISOU4YM7QOSFRIH2T4 \
  | 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: d03b71f09b449d4e619f83a458a0fa9f2fcb0830c1088492b3808cc20488a3a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec574ed516e3179521e02e80c043b7a4724a21dfd0885ccd92077344f6002ee9",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-03-01T19:00:03Z",
    "title_canon_sha256": "f81d5f5508bafca2e976465f914682bd9e6f670fcbe9892d8f17535e0ed10029"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.00576",
    "kind": "arxiv",
    "version": 1
  }
}