Pith Number

pith:2RNEMD74

pith:2010:2RNEMD74VDYORY2NZNUZJSXQIK

not attested not anchored not stored refs pending

Characterization and Photometric Membership of the Open Cluster NGC1981

F. F. S. Maia, J. F. C. Santos Jr, W. J. B. Corradi

arxiv:1005.3047 v2 · 2010-05-17 · 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{2RNEMD74VDYORY2NZNUZJSXQIK}

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	2026-05-18T02:07:17.969758Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d45a460ffca8f0e8e34dcb6994caf04299deca3f7fc473b75f8d120ee19943c1

Aliases

arxiv: 1005.3047 · arxiv_version: 1005.3047v2 · doi: 10.48550/arxiv.1005.3047 · pith_short_12: 2RNEMD74VDYO · pith_short_16: 2RNEMD74VDYORY2N · pith_short_8: 2RNEMD74

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/2RNEMD74VDYORY2NZNUZJSXQIK \
  | 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: d45a460ffca8f0e8e34dcb6994caf04299deca3f7fc473b75f8d120ee19943c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4bb15f6b0a73e4b4cd4ef642d6a8af75e39c42ea54f1ec6f693d3599d04c8521",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-05-17T21:01:16Z",
    "title_canon_sha256": "b237608fdc81f3c31c608536cf3d784f51b46f09fbafd0d4fca1346bba3ce909"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.3047",
    "kind": "arxiv",
    "version": 2
  }
}