Pith Number

pith:FPJIQKZM

pith:1997:FPJIQKZM5RFM2F6NW2EVCSN7XJ

not attested not anchored not stored refs pending

Old open clusters: UBGVRI photometry of NGC 2506

A. Bragaglia, D. Hamilton, G. Marconi, M. Tosi

arxiv:astro-ph/9707076 v1 · 1997-07-07 · 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{FPJIQKZM5RFM2F6NW2EVCSN7XJ}

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	2026-05-18T01:40:17.095759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2bd2882b2cec4acd17cdb6895149bfba478b80456ebefca6c6f18434808c940e

Aliases

arxiv: astro-ph/9707076 · arxiv_version: astro-ph/9707076v1 · doi: 10.48550/arxiv.astro-ph/9707076 · pith_short_12: FPJIQKZM5RFM · pith_short_16: FPJIQKZM5RFM2F6N · pith_short_8: FPJIQKZM

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/FPJIQKZM5RFM2F6NW2EVCSN7XJ \
  | 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: 2bd2882b2cec4acd17cdb6895149bfba478b80456ebefca6c6f18434808c940e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11cf48431309ee98b7ba01c683b649ab1b8519c970412091214889d92fd063cf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-07-07T13:22:42Z",
    "title_canon_sha256": "7b4dadb6f40efb9b06747ec73b5ba2fc7de99d335064a822dd54efe4c93200ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9707076",
    "kind": "arxiv",
    "version": 1
  }
}