Pith Number

pith:CPMBMJXE

pith:2018:CPMBMJXEBXYB67V4ROGVP2EFU2

not attested not anchored not stored refs pending

Variable stars in NGC 4147 revisited: RR Lyrae stars new CCD VI photometry and physical parameters

A. Arellano Ferro, F.C. Rojas Galindo, S. Muneer, Sunetra Giridhar

arxiv:1803.05313 v1 · 2018-03-12 · 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{CPMBMJXEBXYB67V4ROGVP2EFU2}

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	2026-05-18T00:21:01.618947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13d81626e40df01f7ebc8b8d57e885a6a6fcd692aba258c9007cb7b433182203

Aliases

arxiv: 1803.05313 · arxiv_version: 1803.05313v1 · doi: 10.48550/arxiv.1803.05313 · pith_short_12: CPMBMJXEBXYB · pith_short_16: CPMBMJXEBXYB67V4 · pith_short_8: CPMBMJXE

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/CPMBMJXEBXYB67V4ROGVP2EFU2 \
  | 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: 13d81626e40df01f7ebc8b8d57e885a6a6fcd692aba258c9007cb7b433182203

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f18ef04500d4bd748f37da1f3552c957043f3e2b3726fb79ef6bdde8d0c23399",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-03-12T21:54:10Z",
    "title_canon_sha256": "bbc87deb88762441580671a4b109804a66d967327ca32a444620e9717d811e77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.05313",
    "kind": "arxiv",
    "version": 1
  }
}