Pith Number

pith:QPYVLQ75

pith:2011:QPYVLQ754SEXU6J4RKT4QSA3EV

not attested not anchored not stored refs pending

Central Stars of Galactic Planetary Nebulae II New OB-type and emission-line stars

Roberto Gamen, Walter Weidmann

arxiv:1106.1149 v1 · 2011-06-06 · 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{QPYVLQ754SEXU6J4RKT4QSA3EV}

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	2026-05-18T02:01:41.639434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83f155c3fde4897a793c8aa7c8481b254a9b19dacbfabbdf9c4dbfd4a1d23476

Aliases

arxiv: 1106.1149 · arxiv_version: 1106.1149v1 · doi: 10.48550/arxiv.1106.1149 · pith_short_12: QPYVLQ754SEX · pith_short_16: QPYVLQ754SEXU6J4 · pith_short_8: QPYVLQ75

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/QPYVLQ754SEXU6J4RKT4QSA3EV \
  | 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: 83f155c3fde4897a793c8aa7c8481b254a9b19dacbfabbdf9c4dbfd4a1d23476

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3049d2682078899abf02ba63f6c5e4556bfd69daf23828b128d10c6ee72854b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-06-06T18:58:26Z",
    "title_canon_sha256": "9d25d4988e70d37323d27124b224ff082a6571e242b8b4bd857552163af788ec"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.1149",
    "kind": "arxiv",
    "version": 1
  }
}