Pith Number

pith:CHFHZXAC

pith:2006:CHFHZXAC4HE54J3P7ZYTDM4BNO

not attested not anchored not stored refs pending

CURious Variables Experiment (CURVE). CCD Photometry and Variable Stars in the field of open cluster NGC 637

A. Olech, K. Mularczyk, K. Szaruga, K. Zloczewski, M. Wisniewski, P. Kedzierski, P. Pietrukowicz, S. Starczewski

arxiv:astro-ph/0609155 v1 · 2006-09-06 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CHFHZXAC4HE54J3P7ZYTDM4BNO}

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	2026-05-18T02:40:25.172189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11ca7cdc02e1c9de276ffe7131b3816b9c1e4715deea2c3037ef02e2b340b04e

Aliases

arxiv: astro-ph/0609155 · arxiv_version: astro-ph/0609155v1 · doi: 10.48550/arxiv.astro-ph/0609155 · pith_short_12: CHFHZXAC4HE5 · pith_short_16: CHFHZXAC4HE54J3P · pith_short_8: CHFHZXAC

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/CHFHZXAC4HE54J3P7ZYTDM4BNO \
  | 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: 11ca7cdc02e1c9de276ffe7131b3816b9c1e4715deea2c3037ef02e2b340b04e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "498d0b64355afb199e6ef658f1550b88cdf0df942be1521fe537e72985cb4691",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-09-06T12:49:35Z",
    "title_canon_sha256": "695e76cdc9cab554346aa528fdee155dfcf65ba2e2a6a1fcc277ff856c77eeca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0609155",
    "kind": "arxiv",
    "version": 1
  }
}