Pith Number

pith:PQPF5SWC

pith:2014:PQPF5SWCAHI6DR2OFCEZQOZ7E7

not attested not anchored not stored refs pending

Spectroscopic Study of the Open Cluster NGC 6811

Antonio Frasca, Ewa Niemczura, Frank Grundahl, Joanna Molenda-Zakowicz, Karsten Brogaard, Maria Bergemann, Torben Arentoft

arxiv:1409.5132 v1 · 2014-09-17 · 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{PQPF5SWCAHI6DR2OFCEZQOZ7E7}

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	2026-05-18T01:42:01.635774Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c1e5ecac201d1e1c74e2889983b3f27f640d3c1ba6973b09a48a063c0ab8318

Aliases

arxiv: 1409.5132 · arxiv_version: 1409.5132v1 · doi: 10.48550/arxiv.1409.5132 · pith_short_12: PQPF5SWCAHI6 · pith_short_16: PQPF5SWCAHI6DR2O · pith_short_8: PQPF5SWC

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/PQPF5SWCAHI6DR2OFCEZQOZ7E7 \
  | 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: 7c1e5ecac201d1e1c74e2889983b3f27f640d3c1ba6973b09a48a063c0ab8318

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1430e47f683c1ff2b77ecb0041d7042d74e21028c4048b93469e73c7023d9d74",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-09-17T20:02:30Z",
    "title_canon_sha256": "428cd1468bbfbb25059b3c819eab2fe7dcfed4f507fa44875818f083088583da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.5132",
    "kind": "arxiv",
    "version": 1
  }
}