Pith Number

pith:OGNX7OCA

pith:2006:OGNX7OCAQ2A464PIZ5WVP4LVFW

not attested not anchored not stored refs pending

Photometry of the five marginally studied open clusters Collinder 74, Berkeley 27, Haffner 8, NGC 2509 and VdB-Hagen 4

Edgardo Costa (UChile), Giovanni Carraro (Padova)

arxiv:astro-ph/0611705 v1 · 2006-11-22 · 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{OGNX7OCAQ2A464PIZ5WVP4LVFW}

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	2026-05-18T01:40:28.754041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

719b7fb8408681cf71e8cf6d57f1752db29179dbff4fec30493692cc0870d7b5

Aliases

arxiv: astro-ph/0611705 · arxiv_version: astro-ph/0611705v1 · doi: 10.48550/arxiv.astro-ph/0611705 · pith_short_12: OGNX7OCAQ2A4 · pith_short_16: OGNX7OCAQ2A464PI · pith_short_8: OGNX7OCA

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/OGNX7OCAQ2A464PIZ5WVP4LVFW \
  | 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: 719b7fb8408681cf71e8cf6d57f1752db29179dbff4fec30493692cc0870d7b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8170ba0abdff6c77d73a7810aba3ed273803efa67c2d866bd669fec87663521",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-11-22T10:32:05Z",
    "title_canon_sha256": "a8c27fae5e889a36b0fa2906daf90226d39472e4efe102d17fe6962ab46df278"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0611705",
    "kind": "arxiv",
    "version": 1
  }
}