Pith Number

pith:2HWOQCWI

pith:2012:2HWOQCWIIMPPUVDI265WUTLGDO

not attested not anchored not stored refs pending

Further investigation of white dwarfs in the open clusters NGC2287 and NGC3532

A. Day-Jones, K.A. Williams, M.R.Burleigh, N. Lodieu, P.D. Dobbie, Q.A. Parker, R. Baxter, S.L. Casewell

arxiv:1204.2662 v1 · 2012-04-12 · 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{2HWOQCWIIMPPUVDI265WUTLGDO}

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	2026-05-18T01:57:53.214078Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1ece80ac8431efa5468d7bb6a4d661ba4d795eecc75c92804597f58f65062d6

Aliases

arxiv: 1204.2662 · arxiv_version: 1204.2662v1 · doi: 10.48550/arxiv.1204.2662 · pith_short_12: 2HWOQCWIIMPP · pith_short_16: 2HWOQCWIIMPPUVDI · pith_short_8: 2HWOQCWI

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/2HWOQCWIIMPPUVDI265WUTLGDO \
  | 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: d1ece80ac8431efa5468d7bb6a4d661ba4d795eecc75c92804597f58f65062d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7505e67c2cd511df083afd23571dae0ac2e73e124dc422ab1692438e4b2786ad",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-04-12T09:10:58Z",
    "title_canon_sha256": "542d65d98ca8ef9145f654629a55dbcffcaabb9bfb12c031dc5d3fb58e808baf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.2662",
    "kind": "arxiv",
    "version": 1
  }
}