Pith Number

pith:K7J2K5HS

pith:2011:K7J2K5HSZPE5PIB2Q4EXDPKBT6

not attested not anchored not stored refs pending

The White Dwarf Age of NGC 2477

David van Dyk, Elizabeth J. Jeffery, Nathan Stein, Steven Degennaro, Ted von Hippel, William H. Jefferys

arxiv:1102.3459 v1 · 2011-02-17 · 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{K7J2K5HSZPE5PIB2Q4EXDPKBT6}

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	2026-05-18T01:20:26.773682Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57d3a574f2cbc9d7a03a870971bd419f8cb66222242773ae3789a6a237fb5994

Aliases

arxiv: 1102.3459 · arxiv_version: 1102.3459v1 · doi: 10.48550/arxiv.1102.3459 · pith_short_12: K7J2K5HSZPE5 · pith_short_16: K7J2K5HSZPE5PIB2 · pith_short_8: K7J2K5HS

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/K7J2K5HSZPE5PIB2Q4EXDPKBT6 \
  | 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: 57d3a574f2cbc9d7a03a870971bd419f8cb66222242773ae3789a6a237fb5994

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee5891477dd80019fae507529a62d7da219e8d28b9e7e15fe20d37fa0056ea99",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-02-17T00:08:23Z",
    "title_canon_sha256": "90637d1e04ac1f3cfa8b57ea587ee48fe6abcd0445136a8e33dff953ac5f108c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3459",
    "kind": "arxiv",
    "version": 1
  }
}