Pith Number

pith:NNZPKDRF

pith:2017:NNZPKDRFITLLDF4HJ2FKONHVOA

not attested not anchored not stored refs pending

A Multi-Membership Catalogue for 1876 Open Clusters using UCAC4 data

A. Molino, E. J. Alfaro, H. Monteiro, L. Sampedro, W. S. Dias

arxiv:1706.05581 v1 · 2017-06-17 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNZPKDRFITLLDF4HJ2FKONHVOA}

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	2026-05-18T00:39:31.448332Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b72f50e2544d6b197874e8aa734f57004617c7ac5bd010f8f62f1c803fd1e20

Aliases

arxiv: 1706.05581 · arxiv_version: 1706.05581v1 · doi: 10.48550/arxiv.1706.05581 · pith_short_12: NNZPKDRFITLL · pith_short_16: NNZPKDRFITLLDF4H · pith_short_8: NNZPKDRF

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/NNZPKDRFITLLDF4HJ2FKONHVOA \
  | 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: 6b72f50e2544d6b197874e8aa734f57004617c7ac5bd010f8f62f1c803fd1e20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "426c94d235d270283dc09ad8a71a48fd9072f8f7d331d90d459cc1e23dd9dcce",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2017-06-17T21:46:48Z",
    "title_canon_sha256": "64f41a0faa2819c8b406a216a94c3906c34accfab6911887cdea9816acc99c3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.05581",
    "kind": "arxiv",
    "version": 1
  }
}