Pith Number

pith:6IXNENCE

pith:2012:6IXNENCECD3U732TKLQQA3X3XD

not attested not anchored not stored refs pending

The Planetary Nebulae Population in the Nuclear Regions of M31: the SAURON view

Eric Emsellem, Gary A. Mamon, Marc Sarzi, Michele Cappellari, Nicola Pastorello, P. Tim de Zeeuw, Roger L. Davies, Roland Bacon

arxiv:1212.5268 v2 · 2012-12-20 · 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{6IXNENCECD3U732TKLQQA3X3XD}

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	2026-05-18T01:52:29.523339Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f22ed2344410f74fef5352e1006efbb8d3b0483447cae3d035926e022ba9b83d

Aliases

arxiv: 1212.5268 · arxiv_version: 1212.5268v2 · doi: 10.48550/arxiv.1212.5268 · pith_short_12: 6IXNENCECD3U · pith_short_16: 6IXNENCECD3U732T · pith_short_8: 6IXNENCE

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/6IXNENCECD3U732TKLQQA3X3XD \
  | 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: f22ed2344410f74fef5352e1006efbb8d3b0483447cae3d035926e022ba9b83d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4d2da23360a8aba568a8779cfe70d621a0683fe5f60f7dc6f8e27633911940e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-12-20T21:00:02Z",
    "title_canon_sha256": "bad287441c61ce66dd99e05d1cc9f89dcc551c4e1e35bff4ed73f4679b6d09fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.5268",
    "kind": "arxiv",
    "version": 2
  }
}