Pith Number

pith:QBA4ZNFW

pith:2018:QBA4ZNFW62FGWV56CQ4WAS73YF

not attested not anchored not stored refs pending

OGLE Collection of Galactic Cepheids

A. Udalski, D.M. Skowron, I. Soszy\'nski, J. Skowron, K. Rybicki, K. Ulaczyk, M.K. Szyma\'nski, M. Wrona, P. Iwanek, P. Mr\'oz, P. Pietrukowicz, R. Poleski, S. Koz{\l}owski

arxiv:1810.09489 v2 · 2018-10-22 · 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{QBA4ZNFW62FGWV56CQ4WAS73YF}

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	2026-05-17T23:41:30.954461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8041ccb4b6f68a6b57be1439604bfbc17e2bced0207f362cc88e85ef8dd6fb9d

Aliases

arxiv: 1810.09489 · arxiv_version: 1810.09489v2 · doi: 10.48550/arxiv.1810.09489 · pith_short_12: QBA4ZNFW62FG · pith_short_16: QBA4ZNFW62FGWV56 · pith_short_8: QBA4ZNFW

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/QBA4ZNFW62FGWV56CQ4WAS73YF \
  | 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: 8041ccb4b6f68a6b57be1439604bfbc17e2bced0207f362cc88e85ef8dd6fb9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "800a5bd13128977cd56c75815d3c424e4234e215dbd44434d20066559e6a9d2a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-10-22T18:24:33Z",
    "title_canon_sha256": "9de375bf649db7c2d7696c2f434d59dacd9d4f6613a5d7cbcaf3625a4f7183dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.09489",
    "kind": "arxiv",
    "version": 2
  }
}