Pith Number

pith:OQTMBVBT

pith:2005:OQTMBVBTOVGBBXIM7QS4MIFSJD

not attested not anchored not stored refs pending

vbyCaHbeta CCD Photometry of Clusters. VI. The Metal-Deficient Open Cluster NGC 2420

2), (2) STScI), Barbara J. Anthony-Twarog (1), Bruce A. Twarog (1) ((1) Univ. of Kansas, Delora Tanner (1), Misty Cracraft (1

arxiv:astro-ph/0510047 v1 · 2005-10-03 · 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{OQTMBVBTOVGBBXIM7QS4MIFSJD}

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	2026-05-18T01:07:26.230796Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7426c0d433754c10dd0cfc25c620b248f440f915a6ed4efca0bc40ff323e59a9

Aliases

arxiv: astro-ph/0510047 · arxiv_version: astro-ph/0510047v1 · doi: 10.48550/arxiv.astro-ph/0510047 · pith_short_12: OQTMBVBTOVGB · pith_short_16: OQTMBVBTOVGBBXIM · pith_short_8: OQTMBVBT

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/OQTMBVBTOVGBBXIM7QS4MIFSJD \
  | 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: 7426c0d433754c10dd0cfc25c620b248f440f915a6ed4efca0bc40ff323e59a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00df63e9ca4e327d0d0476465dc9ebc20344b469ef6924a3457ec044a1a0f3f2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-10-03T15:32:43Z",
    "title_canon_sha256": "aaf63719ab7262ec07a18108e61fe5638f0837fba784ad0dcc6eb97bb0ea96f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0510047",
    "kind": "arxiv",
    "version": 1
  }
}