Pith Number

pith:ERFPYTVA

pith:2011:ERFPYTVAOM3AZMKDX7KQC3VEBH

not attested not anchored not stored refs pending

A Spectroscopic Survey & Analysis of Bright, Hydrogen-Rich White Dwarfs

Alexandros Gianninas, Maria Teresa Ruiz, Pierre Bergeron

arxiv:1109.3171 v2 · 2011-09-14 · 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{ERFPYTVAOM3AZMKDX7KQC3VEBH}

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	2026-05-18T02:00:32.872865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

244afc4ea073360cb143bfd5016ea409f10ded985e535126b5a6fb66bb10cd50

Aliases

arxiv: 1109.3171 · arxiv_version: 1109.3171v2 · doi: 10.48550/arxiv.1109.3171 · pith_short_12: ERFPYTVAOM3A · pith_short_16: ERFPYTVAOM3AZMKD · pith_short_8: ERFPYTVA

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/ERFPYTVAOM3AZMKDX7KQC3VEBH \
  | 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: 244afc4ea073360cb143bfd5016ea409f10ded985e535126b5a6fb66bb10cd50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "422033eccb4f5b03ead759f03b65673564dbe2fe26868b90c105fcf21aea4a4d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-09-14T19:17:22Z",
    "title_canon_sha256": "0cc3d5e798449165e7f1c712eac62b2356dd33233b14f0477e7c0308edc5bb19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.3171",
    "kind": "arxiv",
    "version": 2
  }
}