Pith Number

pith:J7HNXRPC

pith:2000:J7HNXRPCN32NUUBS35UDFXA64U

not attested not anchored not stored refs pending

Photographic photometries and astrophysical parameters of the open clusters NGC1750 and NGC1758

C.G. Shu, C.Jordi, D.Galadi-Enriquez, J.L.Zhao, K.P.Tian, P.B.Stetson

arxiv:astro-ph/0002423 v1 · 2000-02-23 · 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{J7HNXRPCN32NUUBS35UDFXA64U}

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	2026-05-18T01:07:46.837985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4fcedbc5e26ef4da5032df6832dc1ee52ff596f7f0bc1049c99b04f4142f9598

Aliases

arxiv: astro-ph/0002423 · arxiv_version: astro-ph/0002423v1 · doi: 10.48550/arxiv.astro-ph/0002423 · pith_short_12: J7HNXRPCN32N · pith_short_16: J7HNXRPCN32NUUBS · pith_short_8: J7HNXRPC

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/J7HNXRPCN32NUUBS35UDFXA64U \
  | 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: 4fcedbc5e26ef4da5032df6832dc1ee52ff596f7f0bc1049c99b04f4142f9598

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2b4f7550111b07d2d8ee768e4b06c829ffb22d3bf376f5382c5b6b16bbbf5d0",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-02-23T01:19:43Z",
    "title_canon_sha256": "147f22bb189f3eeff4893bdb426bac1ed53ed64eb3e3ff99a341d528d07822cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0002423",
    "kind": "arxiv",
    "version": 1
  }
}