Pith Number

pith:ZPZ6AZMU

pith:2022:ZPZ6AZMUKIG2Q76ZSKNJH4UZEO

not attested not anchored not stored refs pending

A deep investigation of two poorly studied open clusters Haffner 22 and Melotte 71 in Gaia era

Alok Durgapal, D. Bisht, Devesh P. Sariya, Geeta Rangwal, Ing-Guey Jiang, Quingfeng Zhu, R. K. S. Yadav

arxiv:2203.16459 v1 · 2022-03-30 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZPZ6AZMUKIG2Q76ZSKNJH4UZEO}

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	2026-07-05T04:19:57.153546Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbf3e06594520da87fd9929a93f29923a263cf7e2e602a826cf0a54f1e577826

Aliases

arxiv: 2203.16459 · arxiv_version: 2203.16459v1 · doi: 10.48550/arxiv.2203.16459 · pith_short_12: ZPZ6AZMUKIG2 · pith_short_16: ZPZ6AZMUKIG2Q76Z · pith_short_8: ZPZ6AZMU

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/ZPZ6AZMUKIG2Q76ZSKNJH4UZEO \
  | 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: cbf3e06594520da87fd9929a93f29923a263cf7e2e602a826cf0a54f1e577826

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "64d4fb66af4104df4f74c345f6f3ce3310f09b1e2f928f53092ab1788f2c5014",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2022-03-30T16:59:04Z",
    "title_canon_sha256": "6df160918dc5a2386611dd0828ba65cf444d8f6b1baee8befab1fefab281e9f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.16459",
    "kind": "arxiv",
    "version": 1
  }
}