Pith Number

pith:IBT2JOIE

pith:2013:IBT2JOIEDIABPJWYNYRUVWJIX4

not attested not anchored not stored refs pending

Re-examining the membership and origin of the Epsilon Cha association

Michael S. Bessell, Simon J. Murphy, Warrick A. Lawson

arxiv:1305.4177 v2 · 2013-05-17 · 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{IBT2JOIEDIABPJWYNYRUVWJIX4}

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	2026-05-18T01:49:49.168913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4067a4b9041a0017a6d86e234ad928bf087449ed214f7fcf78146a769bd334a1

Aliases

arxiv: 1305.4177 · arxiv_version: 1305.4177v2 · doi: 10.48550/arxiv.1305.4177 · pith_short_12: IBT2JOIEDIAB · pith_short_16: IBT2JOIEDIABPJWY · pith_short_8: IBT2JOIE

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/IBT2JOIEDIABPJWYNYRUVWJIX4 \
  | 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: 4067a4b9041a0017a6d86e234ad928bf087449ed214f7fcf78146a769bd334a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7cbf84413f4eb8311c854c9ce784471d9d52b7e5cb8322d00286ef850b5527a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-05-17T20:00:01Z",
    "title_canon_sha256": "1093f96eab26d3395f9399e87f57f514fc6794ce021370606182f18881ee8e4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.4177",
    "kind": "arxiv",
    "version": 2
  }
}