Pith Number

pith:2B2EK262

pith:2013:2B2EK262DWQAWDWUIYRBKR2YWY

not attested not anchored not stored refs pending

A Survey for Planetary Nebulae in M31 Globular Clusters

Evan Kaplan, George H. Jacoby, Ho Seong Hwang, James E. Davies, Kimberly A. Herrmann, Myung Gyoon Lee, Orsola De Marco, Robin Ciardullo

arxiv:1303.3867 v1 · 2013-03-15 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2B2EK262DWQAWDWUIYRBKR2YWY}

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	2026-05-18T01:51:06.735085Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d074456bda1da00b0ed44622154758b636a38d6f6d8147645049c08343fe6b8d

Aliases

arxiv: 1303.3867 · arxiv_version: 1303.3867v1 · doi: 10.48550/arxiv.1303.3867 · pith_short_12: 2B2EK262DWQA · pith_short_16: 2B2EK262DWQAWDWU · pith_short_8: 2B2EK262

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/2B2EK262DWQAWDWUIYRBKR2YWY \
  | 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: d074456bda1da00b0ed44622154758b636a38d6f6d8147645049c08343fe6b8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c82d2a7105eb3185ffc24364f09169dc820293bcc6417b701d9bd5cf3e42244",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-03-15T19:08:22Z",
    "title_canon_sha256": "5ac2df5900d8c117b86b799c47b756d8838bcc375795b1db1a1fdc61643f95a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.3867",
    "kind": "arxiv",
    "version": 1
  }
}