Pith Number

pith:7Z4N3WDK

pith:2019:7Z4N3WDKSFEHP2AFJMDWRGY5QD

not attested not anchored not stored refs pending

NGC 1261: A time-series \emph{VI} study of its variable stars

A. Arellano Ferro, I.H. Bustos Fierro, J.A. Ahumada, J.H. Calder\'on

arxiv:1908.04808 v1 · 2019-08-13 · 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{7Z4N3WDKSFEHP2AFJMDWRGY5QD}

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	2026-07-05T00:10:41.778026Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe78ddd86a914877e8054b07689b1d80c57d3ce36d66001c9ac94cb3a00d60ef

Aliases

arxiv: 1908.04808 · arxiv_version: 1908.04808v1 · doi: 10.48550/arxiv.1908.04808 · pith_short_12: 7Z4N3WDKSFEH · pith_short_16: 7Z4N3WDKSFEHP2AF · pith_short_8: 7Z4N3WDK

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/7Z4N3WDKSFEHP2AFJMDWRGY5QD \
  | 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: fe78ddd86a914877e8054b07689b1d80c57d3ce36d66001c9ac94cb3a00d60ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8df875494426607595911c7e6c5768a2af39151b992a294abe236001bb0f3b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-08-13T18:12:18Z",
    "title_canon_sha256": "9fca54cb4bd994c59953878ef46292c10a889459743fcf0d5abc5ba44f2fc93a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.04808",
    "kind": "arxiv",
    "version": 1
  }
}