Pith Number

pith:SDDSDCKW

pith:2009:SDDSDCKWD4YYK4CUOMATT4TGEZ

not attested not anchored not stored refs pending

Age and distance for the old open cluster NGC188 from the eclipsing binary member V12

A. Narwid, A. Pigulski, F. Grundahl, J. V. Clausen, K. Lefever, M. Steslicki, R. D. Mathieu, S. Frandsen, S. Meibom

arxiv:0903.3566 v1 · 2009-03-20 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SDDSDCKWD4YYK4CUOMATT4TGEZ}

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	2026-05-18T02:14:26.947172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90c72189561f31857054730139f26626532b261e65878ffaa21b24f03243c1ee

Aliases

arxiv: 0903.3566 · arxiv_version: 0903.3566v1 · doi: 10.48550/arxiv.0903.3566 · pith_short_12: SDDSDCKWD4YY · pith_short_16: SDDSDCKWD4YYK4CU · pith_short_8: SDDSDCKW

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/SDDSDCKWD4YYK4CUOMATT4TGEZ \
  | 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: 90c72189561f31857054730139f26626532b261e65878ffaa21b24f03243c1ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5ae829f867bf2a6f003688e26df6cc3837e2fb8d94da0edad7b398a0f3be902",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-03-20T16:49:39Z",
    "title_canon_sha256": "2960fbeca7d10d88eb0ed6c0c7a1e9a3cb7c0bfba0ed9ad66010acdf3acbabf0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.3566",
    "kind": "arxiv",
    "version": 1
  }
}