Pith Number

pith:TKIDGS4S

pith:2005:TKIDGS4SZQUHV3NHPZKMLZVFWY

not attested not anchored not stored refs pending

uvby-Hbeta CCD photometry and membership segregation of the open cluster NGC 2548; Gaps in the Main Sequence of open clusters

C. Jordi, D. Galadi-Enriquez, L. Balaguer-Nunez

arxiv:astro-ph/0504044 v2 · 2005-04-02 · 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{TKIDGS4SZQUHV3NHPZKMLZVFWY}

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	2026-05-18T01:23:49.240072Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a90334b92cc287aeda77e54c5e6a5b6089b537dab474f87cd22e506cd12b79a

Aliases

arxiv: astro-ph/0504044 · arxiv_version: astro-ph/0504044v2 · doi: 10.48550/arxiv.astro-ph/0504044 · pith_short_12: TKIDGS4SZQUH · pith_short_16: TKIDGS4SZQUHV3NH · pith_short_8: TKIDGS4S

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/TKIDGS4SZQUHV3NHPZKMLZVFWY \
  | 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: 9a90334b92cc287aeda77e54c5e6a5b6089b537dab474f87cd22e506cd12b79a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a3ebc96f7190a925500e64f2602685d19628333c154f510c8920c0281a74cb1b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-04-02T17:27:16Z",
    "title_canon_sha256": "792f66afe8c191d8b3470b0814469825547260325ea8b8b6c5c1fd79739f1e5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0504044",
    "kind": "arxiv",
    "version": 2
  }
}